Thermoelectric enhancement in single organic radical molecules
Entity
UAM. Departamento de Física de la Materia CondensadaPublisher
American Chemical SocietyDate
2022-01-24Citation
10.1021/acs.nanolett.1c03698
Nano Letters 22.3 (2022): 948-953
ISSN
1530-6984 (print); 1530-6992 (online)DOI
10.1021/acs.nanolett.1c03698Project
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-REditor's Version
https://doi.org/10.1021/acs.nanolett.1c03698Subjects
Energy harvesting; Organic thermoelectricity; Quantum transport; Single radical molecules; FísicaRights
© 2022 The AuthorsAbstract
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
Files in this item
Google Scholar:Hurtado Gallego, Juan
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Sangtarash, Sara
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Davidson, Ross
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Rincón García, Laura
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Daaoub, Abdalghani
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Rubio Bollinger, Gabino
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Lambert, Colin J.
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Oganesyan, Vasily S.
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Bryce, Martin R.
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Agrait de la Puente, Mario Nicolás
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Sadeghi, Hatef
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