N-type organic thermoelectrics: demonstration of ZT > 0.3

Jian Liu (), Bas van der Zee, Riccardo Alessandri, Selim Sami, Jingjin Dong, Mohamad I. Nugraha, Alex J. Barker, Sylvia Rousseva, Li Qiu, Xinkai Qiu, Nathalie Klasen, Ryan C. Chiechi, Derya Baran, Mario Caironi, Thomas D. Anthopoulos, Giuseppe Portale, Remco W. A. Havenith, Siewert J. Marrink, Jan C. Hummelen and L. Jan Anton Koster ()
Additional contact information
Jian Liu: University of Groningen
Bas van der Zee: University of Groningen
Riccardo Alessandri: University of Groningen
Selim Sami: University of Groningen
Jingjin Dong: University of Groningen
Mohamad I. Nugraha: King Abdullah University of Science and Technology (KAUST), Physical Sciences and Engineering Division (PSE), KAUST Solar Center (KSC)
Alex J. Barker: Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia
Sylvia Rousseva: University of Groningen
Li Qiu: University of Groningen
Xinkai Qiu: University of Groningen
Nathalie Klasen: University of Groningen
Ryan C. Chiechi: University of Groningen
Derya Baran: King Abdullah University of Science and Technology (KAUST), Physical Sciences and Engineering Division (PSE), KAUST Solar Center (KSC)
Mario Caironi: Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia
Thomas D. Anthopoulos: King Abdullah University of Science and Technology (KAUST), Physical Sciences and Engineering Division (PSE), KAUST Solar Center (KSC)
Giuseppe Portale: University of Groningen
Remco W. A. Havenith: University of Groningen
Siewert J. Marrink: University of Groningen
Jan C. Hummelen: University of Groningen
L. Jan Anton Koster: University of Groningen

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract The ‘phonon-glass electron-crystal’ concept has triggered most of the progress that has been achieved in inorganic thermoelectrics in the past two decades. Organic thermoelectric materials, unlike their inorganic counterparts, exhibit molecular diversity, flexible mechanical properties and easy fabrication, and are mostly ‘phonon glasses’. However, the thermoelectric performances of these organic materials are largely limited by low molecular order and they are therefore far from being ‘electron crystals’. Here, we report a molecularly n-doped fullerene derivative with meticulous design of the side chain that approaches an organic ‘PGEC’ thermoelectric material. This thermoelectric material exhibits an excellent electrical conductivity of >10 S cm−1 and an ultralow thermal conductivity of

Date: 2020
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DOI: 10.1038/s41467-020-19537-8

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