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25 April 2024

» arxiv » 1505.7389

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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 ;
Date:	27 May 2015
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.
Source:	arXiv, 1505.7389
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