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arXiv · 1505.07389

Tuning of the Thermoelectric Figure of Merit of CH$_3$NH$_3$MI$_3$ (M=Pb,Sn) Photovoltaic Perovskites

Xavier Mettan·Riccardo Pisoni·Péter Matus·Andrea Pisoni·Jaćim Jaćimović·Bálint Náfrádi·Massimo Spina·Davor Pavuna·László Forró·Endre Horváth
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Abstract

The hybrid halide perovskites, the very performant compounds in photovoltaic applications, possess large Seebeck coefficient and low thermal conductivity making them potentially interesting high figure of merit ($ZT$) materials. For this purpose one needs to tune the electrical conductivity of these semiconductors to higher values. We have studied the CH$_3$NH$_3$MI$_3$ (M=Pb,Sn) samples in pristine form showing very low $ZT$ values for both materials; however, photoinduced doping (in M=Pb) and chemical doping (in M=Sn) indicate that, by further doping optimization, $ZT$ can be enhanced toward unity and reach the performance level of the presently most efficient thermoelectric materials.

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Xavier Mettan, Riccardo Pisoni, Péter Matus, Andrea Pisoni, Jaćim Jaćimović, Bálint Náfrádi, Massimo Spina, Davor Pavuna, László Forró, Endre Horváth. 2015-05-27. Tuning of the Thermoelectric Figure of Merit of CH$_3$NH$_3$MI$_3$ (M=Pb,Sn) Photovoltaic Perovskites. https://doi.org/10.1021/acs.jpcc.5b03939

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