Skip to main content

Research Repository

Advanced Search

Thermoelectric Enhancement in Single Organic Radical Molecules

Hurtado-Gallego, Juan; Sangtarash, Sara; Davidson, Ross; Rincón-García, Laura; Daaoub, Abdalghani; Rubio-Bollinger, Gabino; Lambert, Colin J.; Oganesyan, Vasily S.; Bryce, Martin R.; Agraït, Nicolás; Sadeghi, Hatef

Thermoelectric Enhancement in Single Organic Radical Molecules Thumbnail


Authors

Juan Hurtado-Gallego

Sara Sangtarash

Laura Rincón-García

Abdalghani Daaoub

Gabino Rubio-Bollinger

Colin J. Lambert

Vasily S. Oganesyan

Nicolás Agraït

Hatef Sadeghi



Abstract

Organic thermoelectric materials have potential for wearable heating, cooling, and energy generation devices at room temperature. For this to be technologically viable, high-conductance (G) and high-Seebeck-coefficient (S) materials are needed. For most semiconductors, the increase in S is accompanied by a decrease in G. Here, using a combined experimental and theoretical investigation, we demonstrate that a simultaneous enhancement of S and G can be achieved in single organic radical molecules, thanks to their intrinsic spin state. A counterintuitive quantum interference (QI) effect is also observed in stable Blatter radical molecules, where constructive QI occurs for a meta-connected radical, leading to further enhancement of thermoelectric properties. Compared to an analogous closed-shell molecule, the power factor is enhanced by more than 1 order of magnitude in radicals. These results open a new avenue for the development of organic thermoelectric materials operating at room temperature.

Citation

Hurtado-Gallego, J., Sangtarash, S., Davidson, R., Rincón-García, L., Daaoub, A., Rubio-Bollinger, G., …Sadeghi, H. (2022). Thermoelectric Enhancement in Single Organic Radical Molecules. Nano Letters, 22(3), https://doi.org/10.1021/acs.nanolett.1c03698

Journal Article Type Article
Online Publication Date Jan 24, 2022
Publication Date 2022
Deposit Date May 16, 2022
Publicly Available Date May 16, 2022
Journal Nano Letters
Print ISSN 1530-6984
Electronic ISSN 1530-6992
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 22
Issue 3
DOI https://doi.org/10.1021/acs.nanolett.1c03698
Public URL https://durham-repository.worktribe.com/output/1208468

Files

Published Journal Article (1.8 Mb)
PDF

Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Attribution 4.0 International (CC by 4.0)
You are free to:
Share – copy and redistribute the material in any medium or format
Adapt – remix, transform, and build upon material for any purpose, even commercially.
The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
Attribution – you must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
No additional restrictions – you may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Notices:
You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.
No warranties are given. The license may not give you all the permissions necessary for your extended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.






You might also like



Downloadable Citations