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Thermoelectric enhancement in single organic radical molecules

Author
Hurtado Gallego, Juan; Sangtarash, Sara; Davidson, Ross; Rincón García, Laurauntranslated; Daaoub, Abdalghani; Rubio Bollinger, Gabinountranslated; Lambert, Colin J.; Oganesyan, Vasily S.; Bryce, Martin R.; Agrait de la Puente, Mario Nicolásuntranslated; Sadeghi, Hatef
Entity
UAM. Departamento de Física de la Materia Condensada
Publisher
American Chemical Society
Date
2022-01-24
Citation
10.1021/acs.nanolett.1c03698
Nano Letters 22.3 (2022): 948-953
 
 
 
ISSN
1530-6984 (print); 1530-6992 (online)
DOI
10.1021/acs.nanolett.1c03698
Project
info:eu-repo/grantAgreement/EC/H2020/766853; info:eu-repo/grantAgreement/EC/H2020/767187; Comunidad de Madrid. 2018//NMT-4321/NANOMAGCOST; Gobierno de España. MAT2017-88693-R
Editor's Version
https://doi.org/10.1021/acs.nanolett.1c03698
Subjects
Energy harvesting; Organic thermoelectricity; Quantum transport; Single radical molecules; Física
URI
http://hdl.handle.net/10486/705348
Rights
© 2022 The Authors

Licencia Creative Commons
Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional.

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
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Google™ Scholar:Hurtado Gallego, Juan - Sangtarash, Sara - Davidson, Ross - Rincón García, Laura - Daaoub, Abdalghani - Rubio Bollinger, Gabino - Lambert, Colin J. - Oganesyan, Vasily S. - Bryce, Martin R. - Agrait de la Puente, Mario Nicolás - Sadeghi, Hatef

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  • Producción científica en acceso abierto de la UAM [17185]

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