Homoleptic platinum(ii) complexes with pyridyltriazole ligands: excimer-forming phosphorescent emitters for solution-processed OLEDs (2019)
Journal Article
Walden, M. T., Pander, P., Yufit, D. S., Dias, F. B., & Williams, J. G. (2019). Homoleptic platinum(ii) complexes with pyridyltriazole ligands: excimer-forming phosphorescent emitters for solution-processed OLEDs. Journal of Materials Chemistry C Materials for optical and electronic devices, 7(22), 6592--6606. https://doi.org/10.1039/c9tc00768g

Two new homoleptic platinum(II) complexes are reported that feature aryl-appended 5-(2-pyridyl)-1,2,4- triazole chelates acting as N^N ligating ions, PtL1 2 and PtL2 2. Readily prepared from easily accessible proligands, they offer good solubility in... Read More about Homoleptic platinum(ii) complexes with pyridyltriazole ligands: excimer-forming phosphorescent emitters for solution-processed OLEDs.

Realizing 20% External Quantum Efficiency in Electroluminescence with Efficient Thermally Activated Delayed Fluorescence from an Exciplex (2019)
Journal Article
Chapran, M., Pander, P. H., Vasylieva, M., Wiosna-Sałyga, G., Ulanski, J., Dias, F. B., & Data, P. (2019). Realizing 20% External Quantum Efficiency in Electroluminescence with Efficient Thermally Activated Delayed Fluorescence from an Exciplex. ACS Applied Materials and Interfaces, 11(14), 13460-13471. https://doi.org/10.1021/acsami.8b18284

Herein we report the investigation of non-doped exciplex formed in blends of 2,4,6-Tris[3-(diphenylphosphinyl)phenyl]-1,3,5-triazine (PO-T2T), working as the one-electron acceptor molecule, with different electron donors. The emission of these excipl... Read More about Realizing 20% External Quantum Efficiency in Electroluminescence with Efficient Thermally Activated Delayed Fluorescence from an Exciplex.

Blue TADF Emitters Based on Indenocarbazole Derivatives with High Photoluminescence and Electroluminescence Efficiencies (2019)
Journal Article
Lv, X., Huang, R., Sun, S., Zhang, Q., Xiang, S., Ye, S., …Wang, L. (2019). Blue TADF Emitters Based on Indenocarbazole Derivatives with High Photoluminescence and Electroluminescence Efficiencies. ACS Applied Materials and Interfaces, 11(11), 10758-10767. https://doi.org/10.1021/acsami.8b20699

A series of blue thermally activated delayed fluorescence (TADF) emitters were designed and synthesized, using 2,4,6-triphenyl-1,3,5-triazine as the acceptor unit, and indenocarbazole derivatives as the electron-donating moiety. In contrast with othe... Read More about Blue TADF Emitters Based on Indenocarbazole Derivatives with High Photoluminescence and Electroluminescence Efficiencies.

Dinuclear Design of a Pt(II) Complex Affording Highly Efficient Red Emission: Photophysical Properties and Application in Solution-Processible OLEDs (2019)
Journal Article
Shafikov, M. Z., Daniels, R., Pander, P., Dias, F. B., Williams, J. G., & Kozhevnikov, V. N. (2019). Dinuclear Design of a Pt(II) Complex Affording Highly Efficient Red Emission: Photophysical Properties and Application in Solution-Processible OLEDs. ACS Applied Materials and Interfaces, 11(8), 8182-8193. https://doi.org/10.1021/acsami.8b18928

The light-emitting efficiency of luminescent materials is invariably compromised on moving to the red and near-infrared regions of the spectrum due to the transfer of electronic excited-state energy into vibrations. We describe how this undesirable “... Read More about Dinuclear Design of a Pt(II) Complex Affording Highly Efficient Red Emission: Photophysical Properties and Application in Solution-Processible OLEDs.

Less Is More: Dilution Enhances Optical and Electrical Performance of a TADF Exciplex (2019)
Journal Article
Colella, M., Danos, A., & Monkman, A. P. (2019). Less Is More: Dilution Enhances Optical and Electrical Performance of a TADF Exciplex. Journal of Physical Chemistry Letters, 10(4), 793-798. https://doi.org/10.1021/acs.jpclett.8b03646

A surprising yet highly practical approach to improve the performance of a TADF exciplex blend is reported. Using the TSBPA donor and PO-T2T acceptor to form an exciplex, we are able to blue shift the emission, increase PLQY from 58 to 80%, and incre... Read More about Less Is More: Dilution Enhances Optical and Electrical Performance of a TADF Exciplex.

Dynamics of aggregated states resolved by gated fluorescence in films of room temperature phosphorescent emitters (2019)
Journal Article
dos Santos, P. L. L., Silveira, O. J., Huang, R., Jardim, G., Matos, M. J. S., da Silva Júnior, E. N., …Cury, L. A. (2019). Dynamics of aggregated states resolved by gated fluorescence in films of room temperature phosphorescent emitters. Physical Chemistry Chemical Physics, 21(7), 3814-3821. https://doi.org/10.1039/c8cp07005a

Phenazine derivative molecules were studied using steady state and time resolved fluorescence techniques and demonstrated to lead to strong formation of aggregated species, identified as dimers by time dependent density functional theory calculations... Read More about Dynamics of aggregated states resolved by gated fluorescence in films of room temperature phosphorescent emitters.

Optical Properties and Dielectric Functions of Grain Boundaries and Interfaces in CdTe Thin-Film Solar Cells (2019)
Journal Article
Mendis, B. G., Ramasse, Q. M., Shalvey, T., Major, J. D., & Durose, K. (2019). Optical Properties and Dielectric Functions of Grain Boundaries and Interfaces in CdTe Thin-Film Solar Cells. ACS Applied Energy Materials, 2(2), 1419-1427. https://doi.org/10.1021/acsaem.8b01995

CdTe thin-film solar cells have complex microstructures, such as grain boundaries within the absorber layer, as well as CdS window, and Au back contact interfaces, where the local structure and chemistry undergo significant changes. The optical prope... Read More about Optical Properties and Dielectric Functions of Grain Boundaries and Interfaces in CdTe Thin-Film Solar Cells.

Spontaneous emission enhancement in planar metal-organic structures (2018)
Journal Article
Morozov, K., Ivanov, K., Selenin, N., Mikhrin, S., Sa Pereira, D. D., Menelaou, C., …Kaliteevski, M. (2018). Spontaneous emission enhancement in planar metal-organic structures. Journal of Physics: Conference Series, 1135, Article 012034. https://doi.org/10.1088/1742-6596/1135/1/012034

We provide an experimental investigation of a Purcell enhancement in a silver-organic periodic structure with an organic material CBP (4,4'-Bis(N-carbazolyl)-1,1'-biphenyl). Were fabricated two structures using a thermal evaporation technique with a... Read More about Spontaneous emission enhancement in planar metal-organic structures.

Purcell effect investigation in organic Tamm plasmon structures (2018)
Journal Article
Morozov, K., Ivanov, K., Selenin, N., Mikhrin, S., Sa Pereira, D. D., Menelaou, C., …Kaliteevski, M. (2018). Purcell effect investigation in organic Tamm plasmon structures. Journal of Physics: Conference Series, 1135, Article 012082. https://doi.org/10.1088/1742-6596/1135/1/012082

We provide a theoretical and experimental investigation of a Purcell enhancement in a Tamm-plasmon based microcavity structure with an organic (4,4'-Bis(N-carbazolyl)−l,l'- biphenyl (CBP)) active layer. The microcavity structure was fabricated using... Read More about Purcell effect investigation in organic Tamm plasmon structures.

Grazing Incidence X-Ray Reflectivity and Scattering (2018)
Book Chapter
Tanner, B. K. (2018). Grazing Incidence X-Ray Reflectivity and Scattering. In N. Ida, & N. Meyendorf (Eds.), Handbook of Advanced Non-Destructive Evaluation (1-16). Springer Verlag. https://doi.org/10.1007/978-3-319-30050-4_16-1

Spin-out, licence or collaborate: The Knowledge Transfer Dilemma (2018)
Other
Tanner, B. (2018). Spin-out, licence or collaborate: The Knowledge Transfer Dilemma

Photophysics of Thermally Activated Delayed Fluorescence in Organic Molecules (2018)
Book Chapter
Dias, F. B., Penfold, T. J., Berberan-Santos, M. N., & Monkman, A. P. (2018). Photophysics of Thermally Activated Delayed Fluorescence in Organic Molecules. In Magnetic Field Effects (227-257). World Scientific Publishing Co. Pte Ltd. https://doi.org/10.1142/10680

Direct observation of stress relaxation process in 4H-SiC homoepitaxial layers via in-situ synchrotron X-ray topography (2018)
Conference Proceeding
Guo, J., Yang, Y., Raghothamachar, B., Dudley, M., Welt, S., Danilewsky, A., …Tanner, B. (2018). Direct observation of stress relaxation process in 4H-SiC homoepitaxial layers via in-situ synchrotron X-ray topography. In R. Stahlbush, P. Neudeck, A. Bhalla, R. Devaty, M. Dudley, & A. Lelis (Eds.), Silicon Carbide and Related Materials 2017 (176-179). https://doi.org/10.4028/www.scientific.net/msf.924

In-situ synchrotron X-ray topography observation of double-ended Frank-Read sources in PVT-grown 4H-SiC wafers (2018)
Conference Proceeding
Yang, Y., Guo, J., Raghothamachar, B., Dudley, M., Welt, S., Danilewsky, A., …Tanner, B. (2018). In-situ synchrotron X-ray topography observation of double-ended Frank-Read sources in PVT-grown 4H-SiC wafers. In R. Stahlbush, P. Neudeck, A. Bhalla, R. Devaty, M. Dudley, & A. Lelis (Eds.), Silicon Carbide and Related Materials 2017 (172-175). https://doi.org/10.4028/www.scientific.net/msf.924

Time-resolved Photophysical Characterization of Triplet-Harvesting Organic Compounds at Oxygen-Free Environment Using an iCCD Camera (2018)
Journal Article
Pander, P., Data1, P., & Dias, F. B. (2018). Time-resolved Photophysical Characterization of Triplet-Harvesting Organic Compounds at Oxygen-Free Environment Using an iCCD Camera. Journal of Visualized Experiments, 142, Article e56614. https://doi.org/10.3791/56614

Here, we present a sensible method of the acquisition and analysis of time-resolved photoluminescence using an ultrafast iCCD camera. This system enables the acquisition of photoluminescence spectra covering the time regime from nanoseconds up to 0.1... Read More about Time-resolved Photophysical Characterization of Triplet-Harvesting Organic Compounds at Oxygen-Free Environment Using an iCCD Camera.

Importance of Chromophore Rigidity on the Efficiency of Blue Thermally Activated Delayed Fluorescence Emitters (2018)
Journal Article
Kukhta, N. A., Batsanov, A. S., Bryce, M. R., & Monkman, A. P. (2018). Importance of Chromophore Rigidity on the Efficiency of Blue Thermally Activated Delayed Fluorescence Emitters. Journal of Physical Chemistry C, 122(50), 28564-28575. https://doi.org/10.1021/acs.jpcc.8b10867

Four new symmetrical donor–acceptor–donor (D–A–D)-type molecules are reported with diphenylamine (DPA) or 10,11-dihydro-5H-dibenz[b,f]azepine (Az) as electron donors and 9,9-dimethylthioxanthene-S,S-dioxide (TXO2) as the electron acceptor. The donors... Read More about Importance of Chromophore Rigidity on the Efficiency of Blue Thermally Activated Delayed Fluorescence Emitters.

An iminodibenzyl–quinoxaline–iminodibenzyl scaffold as a mechanochromic and dual emitter: donor and bridge effects on optical properties (2018)
Journal Article
Pashazadeh, R., Pander, P., Bucinskas, A., Skabara, P. J., Dias, F. B., & Grazulevicius, J. V. (2018). An iminodibenzyl–quinoxaline–iminodibenzyl scaffold as a mechanochromic and dual emitter: donor and bridge effects on optical properties. Chemical Communications, 54(98), 13857-13860. https://doi.org/10.1039/c8cc06981f

The influence of phenyl linkage and donor strength on the photophysical properties of new derivatives of quinoxaline-containing iminodibenzyl and iminostilbene moieties is studied. The donor–acceptor derivatives showed dual thermally activated delaye... Read More about An iminodibenzyl–quinoxaline–iminodibenzyl scaffold as a mechanochromic and dual emitter: donor and bridge effects on optical properties.

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes (2018)
Journal Article
de Sa Pereira, D., Monkman, A. P., & Data, P. (2018). Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes. Journal of Visualized Experiments, Article e56593. https://doi.org/10.3791/56593

A method for producing simple and efficient thermally-activated delayed fluorescence organic light-emitting diodes (OLEDs) based on guest-host or exciplex donor-acceptor emitters is presented. With a step-by-step procedure, readers will be able to re... Read More about Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes.

Intramolecular Charge Transfer Controls Switching Between Room Temperature Phosphorescence and Thermally Activated Delayed Fluorescence (2018)
Journal Article
Chen, C., Huang, R., Batsanov, A., Pander, P., Hsu, Y., Chi, Z., …Bryce, M. R. (2018). Intramolecular Charge Transfer Controls Switching Between Room Temperature Phosphorescence and Thermally Activated Delayed Fluorescence. Angewandte Chemie, 130(50), 16645-16649. https://doi.org/10.1002/ange.201809945

Chemical modification of phenothiazine–benzophenone derivatives is shown to tune the emission behavior from triplet states by selecting the molecular geometry of the intramolecular charge transfer (ICT) state. A fundamental principle of planar ICT (P... Read More about Intramolecular Charge Transfer Controls Switching Between Room Temperature Phosphorescence and Thermally Activated Delayed Fluorescence.

Interfacial TADF Exciplex as a Tool to Localise Excitons, Improve Efficiency and Increase OLED Lifetime (2018)
Journal Article
Colella, M., Pander, P. H., Pereira, D. D. S., & Monkman, A. P. (2018). Interfacial TADF Exciplex as a Tool to Localise Excitons, Improve Efficiency and Increase OLED Lifetime. ACS Applied Materials and Interfaces, 10(46), 40001-40007. https://doi.org/10.1021/acsami.8b15942

In this work, we employ a TADF exciplex formed between the emissive layer (EML) host, 26DCzPPy, and the electron transport layer (ETL), PO-T2T at the interface between the EML and the ETL to improve the stability and efficiency of a phosphorescence O... Read More about Interfacial TADF Exciplex as a Tool to Localise Excitons, Improve Efficiency and Increase OLED Lifetime.