Efficient p-Type Doping of Tin Halide Perovskite via Sequential Diffusion for Thermoelectrics.

ABSTRACT: Metal halide perovskites (MHPs) hold great potential in thermoelectric (TE) applications, thanks to their regular and soft lattice in nature. However, the poor electrical conductivity caused by low charge carrier density (<10¹⁴ cm^-3 for lead-based MHPs) strongly impedes its TE development. In this scenario, tin halide perovskites (THPs) emerge as promising TE candidates owing to their high background hole densities (>10¹⁹ cm^-3). However, further electrical doping remains challenging, originating from the limited capability of accommodating heterogeneous dopants and the heavy compensation in THPs. Herein, a novel diffusion-mediated doping approach is demonstrated to prominently increase the p-type doping level of THPs by a sequence of air exposure

SUBMITTER: Chen R 

PROVIDER: S-EPMC11935806 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature