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Professor Douglas Halliday's Outputs (96)

The Impact of Hot Injection Reaction Temperature on the Properties of Cu2ZnSnS4 Nanocrystal Thin Films for PV Devices (2023)
Journal Article
Alluhaybi, A., Halliday, D., Szablewski, M., & Bowen, L. (2024). The Impact of Hot Injection Reaction Temperature on the Properties of Cu2ZnSnS4 Nanocrystal Thin Films for PV Devices. IEEE Journal of Photovoltaics, 14(2), 240-245. https://doi.org/10.1109/jphotov.2023.3338859

Cu 2 ZnSnS 4 (CZTS) is a p-type absorber layer semiconductor, which is a promising candidate material for advanced solar cell devices. CZTS nanoparticle thin films were synthesized via the hot-injection spin-coating method. Nanoparticle inks were dep... Read More about The Impact of Hot Injection Reaction Temperature on the Properties of Cu2ZnSnS4 Nanocrystal Thin Films for PV Devices.

Variability of Cu 2 ZnSnS 4 nanoparticle hot injection synthesis and modifications by thin film annealing (2023)
Journal Article
Stroh, K. P., Szablewski, M., & Halliday, D. P. (2023). Variability of Cu 2 ZnSnS 4 nanoparticle hot injection synthesis and modifications by thin film annealing. Materials Advances, 5(3), 833-1350. https://doi.org/10.1039/d3ma00396e

As a quaternary semiconductor with a direct energy bandgap of around 1.4 eV, Cu2ZnSnS4 is a promising candidate for absorber layers in next generation thin-film solar PV devices. It has the advantage of being based on low cost earth-abundant elements... Read More about Variability of Cu 2 ZnSnS 4 nanoparticle hot injection synthesis and modifications by thin film annealing.

The effect of annealing conditions: temperature, time, ramping rate and atmosphere on nanocrystal Cu2ZnSnS4 (CZTS) thin film solar cell properties (2019)
Journal Article
Altowairqi, Y., Alsubaie, A., Stroh, K., Perez-Marin, I., Bowen, L., Szablewski, M., & Halliday, D. (2019). The effect of annealing conditions: temperature, time, ramping rate and atmosphere on nanocrystal Cu2ZnSnS4 (CZTS) thin film solar cell properties. Materials Today: Proceedings, 18(2), 473-486. https://doi.org/10.1016/j.matpr.2019.06.234

Cu2ZnSnS4 (CZTS) nanoparticles were fabricated successfully using the hot injection method; CZTS films were deposited by spin coating of nanocrystal ink. The aim of this work is to study the effect of annealing parameters: temperature, time, ramping... Read More about The effect of annealing conditions: temperature, time, ramping rate and atmosphere on nanocrystal Cu2ZnSnS4 (CZTS) thin film solar cell properties.

Modelling an optimised thin film solar cell (2019)
Journal Article
Becque, J., & Halliday, D. (2019). Modelling an optimised thin film solar cell. European Journal of Physics, 40(2), Article 025501. https://doi.org/10.1088/1361-6404/aaf954

A phenomenological model has been developed to simulate the efficiency of thin film solar cells. The model uses key equations for p-n heterojunctions and includes radiative recombination, Auger recombination, Shockley-Read-Hall recombination and surf... Read More about Modelling an optimised thin film solar cell.

Candidate and supervisor experiences of doctoral study in a structured, interdisciplinary training environment (2019)
Journal Article
Kiley, M., & Halliday, D. P. (2019). Candidate and supervisor experiences of doctoral study in a structured, interdisciplinary training environment. Innovations in Education and Teaching International, 56(5), 663-674. https://doi.org/10.1080/14703297.2019.1570306

This study aimed to understand doctoral candidates’ and supervisors’ positive and negative experiences of undertaking a doctorate in a structured interdisciplinary research training environment. Interviews were held with 16 candidates and eight super... Read More about Candidate and supervisor experiences of doctoral study in a structured, interdisciplinary training environment.

Polymorphism in Cu2ZnSnS4 and new off-stoichiometric crystal structure types (2017)
Journal Article
Bosson, C. J., Birch, M. T., Halliday, D. P., Tang, C. C., Kleppe, A. K., & Hatton, P. D. (2017). Polymorphism in Cu2ZnSnS4 and new off-stoichiometric crystal structure types. Chemistry of Materials, 29(22), 9829-9839. https://doi.org/10.1021/acs.chemmater.7b04010

Cu2ZnSnS4 (CZTS) is a very promising material for the absorber layer in sustainable thin-film solar cells. Its photovoltaic performance is currently limited by crystal structure disorder, which causes fluctuations in electrostatic potential that decr... Read More about Polymorphism in Cu2ZnSnS4 and new off-stoichiometric crystal structure types.

Cation disorder and phase transitions in the structurally complex solar cell material Cu2ZnSnS4 (2017)
Journal Article
Bosson, C., Birch, M., Halliday, D., Knight, K., Gibbs, A., & Hatton, P. (2017). Cation disorder and phase transitions in the structurally complex solar cell material Cu2ZnSnS4. Journal of Materials Chemistry A: materials for energy and sustainability, 5(32), 16672-16680. https://doi.org/10.1039/c7ta03603e

Cu2ZnSnS4 (CZTS) is a technologically important and complex quaternary semiconductor and a highly promising material for the absorber layer in sustainable thin film solar cells. Its photovoltaic performance is currently limited by low open-circuit vo... Read More about Cation disorder and phase transitions in the structurally complex solar cell material Cu2ZnSnS4.

Structural and optical properties of oxygen doped single crystal ZnTe grown by multi-tube physical vapour transport (2017)
Journal Article
Mullins, J., Dierre, F., Halliday, D., Tanner, B., Radley, I., Kang, Z., & Summers, C. (2017). Structural and optical properties of oxygen doped single crystal ZnTe grown by multi-tube physical vapour transport. Journal of Materials Science: Materials in Electronics, 28(16), 11950-11960. https://doi.org/10.1007/s10854-017-7004-5

Bulk single crystals of zinc telluride up to 10 mm thick have been grown by the Multi-Tube Physical Vapour Transport technique and doped, in-situ during growth, with oxygen. Following hetero-epitaxial nucleation and buffer growth on 100 mm diameter G... Read More about Structural and optical properties of oxygen doped single crystal ZnTe grown by multi-tube physical vapour transport.

Superconducting Properties of Titanium alloys (Ti-64 and Ti-6242) for critical current barrels (2016)
Journal Article
Ridgeon, F., Raine, M., Halliday, D., Lakrimi, M., Thomas, A., & Hampshire, D. (2017). Superconducting Properties of Titanium alloys (Ti-64 and Ti-6242) for critical current barrels. IEEE Transactions on Applied Superconductivity, 27(4), Article 4201205. https://doi.org/10.1109/tasc.2016.2645378

We have measured the superconducting properties of the titanium alloy Ti-6Al-4V (Ti-64) as-supplied and following two of the heat treatment schedules used for the Nb3Sn strands in the ITER tokamak. The Ti-64 alloy is the standard choice in the superc... Read More about Superconducting Properties of Titanium alloys (Ti-64 and Ti-6242) for critical current barrels.

Crystal structure and cation disorder in bulk Cu2ZnSnS4 using neutron diffraction and X-ray anomalous scattering (2016)
Presentation / Conference Contribution
Bosson, C., Birch, M., Halliday, D., Knight, K., Tang, C., Kleppe, A., & Hatton, P. (2016). Crystal structure and cation disorder in bulk Cu2ZnSnS4 using neutron diffraction and X-ray anomalous scattering. In 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC) : Portland, OR, 5-10 June 2016 ; proceedings (0405-0410). https://doi.org/10.1109/pvsc.2016.7749621

Cu2ZnSnS4 (CZTS) is a promising material for the absorber layer in sustainable thin film photovoltaic cells, but its best efficiencies are currently limited by low open-circuit voltages, thought to be due to defects such as disorder between the coppe... Read More about Crystal structure and cation disorder in bulk Cu2ZnSnS4 using neutron diffraction and X-ray anomalous scattering.

Plasmon-loss imaging of polymer-methanofullerene bulk heterojunction solar cells (2013)
Journal Article
Mendis, B. G., Bishop, S. J., Groves, C., Szablewski, M., Berlie, A., & Halliday, D. P. (2013). Plasmon-loss imaging of polymer-methanofullerene bulk heterojunction solar cells. Applied Physics Letters, 102(25), Article 253301. https://doi.org/10.1063/1.4812485

The plasmon feature in an electron energy loss spectrum provides unique insight into poly(3-hexylthiophene) (P3HT)-phenyl-C61-butyric acid methyl ester (PCBM) solar cells. Analysis of the intensity, shape, and energy of the plasmon reveals informatio... Read More about Plasmon-loss imaging of polymer-methanofullerene bulk heterojunction solar cells.

Luminescence of Cu2ZnSnS4 polycrystals described by the fluctuating potential model (2013)
Journal Article
Halliday, D., Claridge, R., Goodman, M., Mendis, B., Durose, K., & Major, J. (2013). Luminescence of Cu2ZnSnS4 polycrystals described by the fluctuating potential model. Journal of Applied Physics, 113(22), Article 223503. https://doi.org/10.1063/1.4810846

The growth of Cu 2ZnSnS4 (CZTS) polycrystals from solid state reaction over a range of compositions, including the regions which produce the highest efficiency photovoltaic devices, is reported. X-ray measurements confirm the growth of crystalline CZ... Read More about Luminescence of Cu2ZnSnS4 polycrystals described by the fluctuating potential model.

Microstructure and point defects in CdTe nanowires for photovoltaic applications (2013)
Journal Article
Williams, B., Halliday, D., Mendis, B., & Durose, K. (2013). Microstructure and point defects in CdTe nanowires for photovoltaic applications. Nanotechnology, 24(13), Article 135703. https://doi.org/10.1088/0957-4484/24/13/135703

Defects in Au-catalysed CdTe nanowires vapour–liquid–solid-grown on polycrystalline underlayers have been critically evaluated. Their low-temperature photoluminescence spectra were dominated by excitonic emission with rarely observed above-gap emissi... Read More about Microstructure and point defects in CdTe nanowires for photovoltaic applications.

Direct observation of Cu,Zn cation disorder in Cu2ZnSnS4 solar cell absorber material using aberration corrected scanning transmission electron microscopy (2012)
Journal Article
Mendis, B., Shannon, M., Goodman, M., Major, J., Claridge, R., Halliday, D., & Durose, K. (2014). Direct observation of Cu,Zn cation disorder in Cu2ZnSnS4 solar cell absorber material using aberration corrected scanning transmission electron microscopy. Progress in Photovoltaics, 22(1), 24-34. https://doi.org/10.1002/pip.2279

Chemical analysis of individual atom columns was carried out to determine the crystal structure and local point defect chemistry of Cu2ZnSnS4. Direct evidence for a nanoscale composition inhomogeneity, in the form of Zn enrichment and Cu depletion, w... Read More about Direct observation of Cu,Zn cation disorder in Cu2ZnSnS4 solar cell absorber material using aberration corrected scanning transmission electron microscopy.

Photoluminescence of gold, copper and niobium as a function of temperature (2009)
Journal Article
Armstrong, H., Halliday, D., & Hampshire, D. (2009). Photoluminescence of gold, copper and niobium as a function of temperature. Journal of Luminescence, 129(12), 1610-1614. https://doi.org/10.1016/j.jlumin.2009.04.022

A specially constructed instrument for measuring the low intensity photoluminescence emission spectra of metals is described. It uses low luminescence optical components and dedicated sample mounting techniques. Room temperature measurements agree cl... Read More about Photoluminescence of gold, copper and niobium as a function of temperature.

Photoluminescence study of polycrystalline photovoltaic CdS thin film layers grown by close-spaced sublimation and chemical bath deposition (2009)
Journal Article
Abken, A. E., Halliday, D., & Durose, K. (2009). Photoluminescence study of polycrystalline photovoltaic CdS thin film layers grown by close-spaced sublimation and chemical bath deposition. Journal of Applied Physics, 105(6), Article 064515. https://doi.org/10.1063/1.3074504

Photoluminescence (PL) measurements were used to study the effect of postdeposition treatments by annealing and CdCl2 activation on polycrystalline CdS layer grown by close-spaced sublimation (CSS) and chemical bath deposition (CBD). CdS films were e... Read More about Photoluminescence study of polycrystalline photovoltaic CdS thin film layers grown by close-spaced sublimation and chemical bath deposition.

Development of low temperature approaches to device quality CdS: A modified geometry for solution growth of thin films and their characterisation (2007)
Journal Article
Archbold, M., Halliday, D., Durose, K., Hase, T., Boyle, D., Mazzamuto, S., …Bosio, A. (2007). Development of low temperature approaches to device quality CdS: A modified geometry for solution growth of thin films and their characterisation. Thin Solid Films, 515(5), 2954-2957. https://doi.org/10.1016/j.tsf.2006.09.005

Cadmium sulphide thin films have been grown using a modified chemical bath deposition method with four innovative features: i) ethylenediamine was used as the complexing agent, enabling the use of low cadmium concentrations, ii) a rectangular bath ge... Read More about Development of low temperature approaches to device quality CdS: A modified geometry for solution growth of thin films and their characterisation.

In situ oxygen incorporation and related issues in CdTe/CdS photovoltaic devices (2006)
Journal Article
Emziane, M., Durose, K., Halliday, D., Bosio, A., & Romeo, N. (2006). In situ oxygen incorporation and related issues in CdTe/CdS photovoltaic devices. Journal of Applied Physics, 100(1), https://doi.org/10.1063/1.2209788

CdTe/CdS/SnO2/ITO:F solar cell devices were investigated using quantitative secondary ion mass spectrometry (SIMS) depth profiling. They were grown on sapphire substrates and potentially active impurity species were analyzed. The SIMS data were calib... Read More about In situ oxygen incorporation and related issues in CdTe/CdS photovoltaic devices.

SIMS depth profiling of CdTe-based solar cells grown on sapphire substrates. (2006)
Journal Article
Emziane, M., Durose, K., Halliday, D., Romeo, N., & Bosio, A. (2006). SIMS depth profiling of CdTe-based solar cells grown on sapphire substrates. Thin Solid Films, 511-512, 66-70. https://doi.org/10.1016/j.tsf.2005.11.094

CdTe/CdS/TCO solar cell structures were grown on sapphire substrates especially to investigate the impurity distributions in them. The study was performed using quantitative secondary ion mass spectrometry (SIMS) depth profiling, from the CdTe back s... Read More about SIMS depth profiling of CdTe-based solar cells grown on sapphire substrates..

Efficiency improvement in thin-film solar cell devices with oxygen-containing absorber layer (2005)
Journal Article
Emziane, M., Durose, K., Halliday, D., Bosio, A., & Romeo, N. (2005). Efficiency improvement in thin-film solar cell devices with oxygen-containing absorber layer. Applied Physics Letters, 87(26), Article 261901. https://doi.org/10.1063/1.2152108

The CdTe∕CdSCdTe∕CdSsolar cell devices were grown using a dry process consisting of sputtering for the transparent conducting oxide and CdS window layers, and close-space sublimation for CdTe absorber layer. These devices were back contacted using Mo... Read More about Efficiency improvement in thin-film solar cell devices with oxygen-containing absorber layer.

Does CdTe deposition affect the impurity profile in sputtered CdS window layers? (2005)
Book Chapter
Emziane, M., Durose, K., Halliday, D., Bosio, A., & Romeo, N. (2005). Does CdTe deposition affect the impurity profile in sputtered CdS window layers?. In W. Gessert, T. Niki, S. Siebentritt, & S. Shafarman (Eds.), Thin-Film Compound Semiconductor Photovoltaics (411-416)

We report a multi-element study of impurities in CdS window layers by dynamic and quantitative SIMS. Two CdS/TCO/glass samples, grown separately using nominally the same conditions, were considered. In2O3:F grown on soda lime glass was used as TCO fo... Read More about Does CdTe deposition affect the impurity profile in sputtered CdS window layers?.

Role of substrate and transparent conducting oxide in impurity evolvement in polycrystalline thin-film devices (2005)
Journal Article
Emziane, M., Durose, K., Halliday, D., Bosio, A., & Romeo, N. (2005). Role of substrate and transparent conducting oxide in impurity evolvement in polycrystalline thin-film devices. Applied Physics Letters, 87(25), https://doi.org/10.1063/1.2149990

A comparison of as-grown and processed CdTe/CdS solar cell structures deposited on sapphire substrate has been undertaken with those grown on glass. The device structures were depth-profiled using quantitative secondary ion mass spectrometry. It was... Read More about Role of substrate and transparent conducting oxide in impurity evolvement in polycrystalline thin-film devices.

The distribution of impurities in the interfaces and window layers of thin-film solar cells (2005)
Journal Article
Emziane, M., Durose, K., Halliday, D., Romeo, N., & Bosio, A. (2005). The distribution of impurities in the interfaces and window layers of thin-film solar cells. Journal of Applied Physics, 97(11), Article 114910. https://doi.org/10.1063/1.1921344

We report a systematic multielement study of impurities in CdS window layers by dynamic and quantitative secondary-ion-mass spectrometry (SIMS) with high depth resolution. The study was carried out on CdTe/CdS solar cell structures, with the glass su... Read More about The distribution of impurities in the interfaces and window layers of thin-film solar cells.

A combined SIMS and ICPMS investigation of the origin and distribution of potentially electrically active impurities in CdTe/CdS solar cell structures (2005)
Journal Article
Emziane, M., Durose, K., Romeo, N., Bosio, A., & Halliday, D. (2005). A combined SIMS and ICPMS investigation of the origin and distribution of potentially electrically active impurities in CdTe/CdS solar cell structures. Semiconductor Science and Technology, 20(5), 434-442. https://doi.org/10.1088/0268-1242/20/5/019

Quantitative, dynamic secondary ion mass spectrometry (SIMS) combined with inductively coupled plasma mass spectrometry (ICPMS) was used to study the origin and distribution of impurities in CdTe/CdS/In2O3:F/glass solar cell structures. Particular em... Read More about A combined SIMS and ICPMS investigation of the origin and distribution of potentially electrically active impurities in CdTe/CdS solar cell structures.

Impurity analysis of CdCl₂ used for thermal activation of CdTe-based solar cells (2004)
Journal Article
Emziane, M., Ottley, C., Durose, K., & Halliday, D. (2004). Impurity analysis of CdCl₂ used for thermal activation of CdTe-based solar cells. Journal of Physics D: Applied Physics, 37(21), 2962-2965. https://doi.org/10.1088/0022-3727/37/21/004

We present an impurity analysis of cadmium chloride (CdCl2) using inductively coupled plasma mass spectrometry. Six batches of CdCl2 with different nominal purity ranging from 99.999% to 95% were analysed. Each batch turned out to be different in ter... Read More about Impurity analysis of CdCl₂ used for thermal activation of CdTe-based solar cells.

The effect of the wall contact and post-growth cool-down on defects in CdTe crystals grown by 'contactless' physical vapour transport (2003)
Journal Article
Palosz, W., Grasza, K., Durose, K., Halliday, D., Boyall, N., Dudley, M., …Cai, L. (2003). The effect of the wall contact and post-growth cool-down on defects in CdTe crystals grown by 'contactless' physical vapour transport. Journal of Crystal Growth, 254(3-4), 316-328. https://doi.org/10.1016/s0022-0248%2803%2901183-7

A series of cadmium telluride crystals grown by physical vapour transport without contact with the ampoule walls and cooled at different rates were characterized using synchrotron X-ray topography, photoluminescence, and chemical etching. Strain from... Read More about The effect of the wall contact and post-growth cool-down on defects in CdTe crystals grown by 'contactless' physical vapour transport.

Photoluminescence studies of CdS/CdTe solar cells treated with oxygen (2003)
Journal Article
Hernandez-Fenollosa, M., Halliday, D., Durose, K., Campo, M., & Beier, J. (2003). Photoluminescence studies of CdS/CdTe solar cells treated with oxygen. Thin Solid Films, 431, 176-180. https://doi.org/10.1016/s0040-6090%2803%2900238-4

In this work we have used low temperature photoluminescence (PL) to study a set of CdS/CdTe solar cells grown by close space sublimation. The samples were given a post-growth treatment at 390 °C with HCl in a varying partial pressure of oxygen of up... Read More about Photoluminescence studies of CdS/CdTe solar cells treated with oxygen.

Steady State Photoconductivity In Conjugated Polymers (2002)
Book Chapter
Sitch, C., Halliday, D., & Monkman, A. (2002). Steady State Photoconductivity In Conjugated Polymers. In G. E. Jabbour, & N. S. Sariciftci (Eds.), Electronic, Optical and Optoelectronic Polymers and Oligomers (327-331). Materials Research Society

Photoluminescence characrerisation of ion implanted CdTe (2002)
Book Chapter
Halliday, D., Potter, M., Boyle, D., & Durose, K. (2002). Photoluminescence characrerisation of ion implanted CdTe. In R. Birkmire, R. Noufi, D. Lincot, & H. Schock (Eds.), Compound Semiconductor Photovoltaic Materials: 2001 MRS Spring Meeting - Symposium H – II-IV (H1.8.1 - H1.8.6). Cambridge University Press. https://doi.org/10.1557/proc-668-h1.8

We have ion implanted a series of dopants into single crystal CdTe. The influence of the impurities on the CdTe has been studied by low temperature photoluminescence spectroscopy. The impurities studied are: O, Cl, Cu, S, Na and Sb, and were selected... Read More about Photoluminescence characrerisation of ion implanted CdTe.

The influence of CdTe growth ambient on MOCVD grown CdS/CdTe photovoltaic cells. (2001)
Journal Article
Hartley, A., Irvine, S., Halliday, D., & Potter, M. (2001). The influence of CdTe growth ambient on MOCVD grown CdS/CdTe photovoltaic cells. Thin Solid Films, 387(1-2), 89-91. https://doi.org/10.1016/s0040-6090%2800%2901722-3

CdS/CdTe photovoltaic cells have been grown by MOCVD (metal–organic chemical vapour deposition) with a range of VI/II ratios in the CdTe reactant mixture. All CdTe layers were highly doped with As (approx. 2×1018 atoms/cm3) to ensure p-type conductiv... Read More about The influence of CdTe growth ambient on MOCVD grown CdS/CdTe photovoltaic cells..

Analysis of CdCl2 annealing process in CdTe/CdS solar cells (2000)
Presentation / Conference Contribution
Potter, M., Halliday, D., Cousins, M., Scheer, H., McNelis, B., Palz, W., …Helm, P. (2000). Analysis of CdCl2 annealing process in CdTe/CdS solar cells.

A series of CdTe/CdS solar cells are subjected to CdCl2 anneals of varying lengths and then chemically bevelled and analysed by photoluminescence (PL) spectroscopy. Half of the samples were subjected to a physical polishing using 0.25 m diamond paste... Read More about Analysis of CdCl2 annealing process in CdTe/CdS solar cells.

Effect of interdiffusion and impurities on thin film CdTe/CdS photovoltaic junctions (2000)
Journal Article
Potter, M., Cousins, M., Durose, K., & Halliday, D. (2000). Effect of interdiffusion and impurities on thin film CdTe/CdS photovoltaic junctions. Journal of Materials Science: Materials in Electronics, 11(7), 525-530. https://doi.org/10.1023/a%3A1026565632569

We have used low temperature photoluminescence (PL) to study thin film CdTe/CdS solar cell structures. The devices were produced by close space sublimation (CSS) and have undergone a post-growth treatment, a vital step in increasing device efficiency... Read More about Effect of interdiffusion and impurities on thin film CdTe/CdS photovoltaic junctions.

Electrical and optical properties of a polymer semiconductor interface (1999)
Journal Article
Halliday, D., Gray, J., Adams, P., & Monkman, A. (1999). Electrical and optical properties of a polymer semiconductor interface. Synthetic Metals, 102(1-3), 877-878

We have fabricated a stable electrical interface between a range of n-type, p-type and undoped GaAs epitaxial layers and a film of conductive p-type polyaniline. The IV characteristics of this device show rectifying behaviour consistent with a potent... Read More about Electrical and optical properties of a polymer semiconductor interface.

Visible electroluminescence from a polyaniline-porous silicon junction (1997)
Journal Article
Halliday, D., Eggleston, J., Adams, P., Pentland, I., & Monkman, A. (1997). Visible electroluminescence from a polyaniline-porous silicon junction. Synthetic Metals, 85(1-3), 1245-1246

We have studied the interface formed between a p-type conducting polyaniline layer and an n-type porous silicon wafer, The contact has rectifying behaviour demonstrated clearly by the IV curves, We can fit our data to a simple Schottky barrier model.... Read More about Visible electroluminescence from a polyaniline-porous silicon junction.

Electroluminescence from porous silicon using a conducting polyaniline contact (1996)
Journal Article
Halliday, D., Holland, E., Eggleston, J., Adams, P., Cox, S., & Monkman, A. (1996). Electroluminescence from porous silicon using a conducting polyaniline contact. Thin Solid Films, 276(1-2), 299-302. https://doi.org/10.1016/0040-6090%2895%2908102-x

We have fabricated a p-n junction using a p-type conducting polyaniline layer deposited on an n-type porous silicon layer. This junction shows rectifying behaviour. The I–V curves can be fitted to a Schottky barrier model with a barrier height of 0.8... Read More about Electroluminescence from porous silicon using a conducting polyaniline contact.

Electronic processes in double-barrier resonant-tunneling structures studied by photoluminescence spectroscopy in zero and finite magnetic fields (1990)
Journal Article
Skolnick, M., Hayes, D., Simmonds, P., Higgs, A., Smith, G., Hutchinson, H., …Halliday, D. (1990). Electronic processes in double-barrier resonant-tunneling structures studied by photoluminescence spectroscopy in zero and finite magnetic fields. Physical Review B (Condensed Matter), 41, 10754-10766. https://doi.org/10.1103/physrevb.41.10754

Erratum: Electronic processes in double-barrier resonant-tunneling structures studied by photoluminescence spectroscopy in zero and finite magnetic fields [Phys. Rev. B 41, 10754 (1990)] (1990)
Journal Article
Skolnick, M., Hayes, D., Simmonds, P., Higgs, A., Smith, G., Hutchinson, H., …Halliday, D. (1990). Erratum: Electronic processes in double-barrier resonant-tunneling structures studied by photoluminescence spectroscopy in zero and finite magnetic fields [Phys. Rev. B 41, 10754 (1990)]. Physical Review B (Condensed Matter), 42, 5364-. https://doi.org/10.1103/physrevb.42.5364

Residual Impurities In Autodoped Normal-gaas Grown By Mbe (1989)
Journal Article
Stanaway, M., Grimes, R., Halliday, D., Chamberlain, J., Henini, M., Hughes, O., Davies, M., & Hill, G. (1989). Residual Impurities In Autodoped Normal-gaas Grown By Mbe. Institute of physics conference series, 295-300

Optical And Electrical Studies Of Gap-ti (1988)
Journal Article
Ulrici, W., Friedland, K., Eaves, L., Halliday, D., & Payling, C. (1988). Optical And Electrical Studies Of Gap-ti. physica status solidi (b) – basic solid state physics, 150, 177-190

Vanadium in GaAs and GaP (1986)
Journal Article
Ulrici, W., Eaves, L., Friedland, K., Halliday, D., & Kreissl, J. (1986). Vanadium in GaAs and GaP. Materials Science Forum, 10-12, 639-644

Optical, electrical and EPR studies of GaAs:Ni. (1986)
Book Chapter
Ulrici, W., Eaves, L., Friedland, K., Halliday, D., Kreissl, J., & Ulrici, B. (1986). Optical, electrical and EPR studies of GaAs:Ni. In H. von Bardeleben (Ed.), Defects in Semiconductors 14. Proceedings of the 14th International Conference on Defects in Semiconductors (ICDS-14), Paris, France, 1986 (669-674). Trans Tech Publications