Tuning the Thermoelectric Performance of Hybrid Tin Perovskites by Air Treatment
Type
ArticleAuthors
Haque, Mohammed
Hernandez, Luis Huerta
Davaasuren, Bambar

Villalva, Diego Rosas
Troughton, Joel
Baran, Derya

KAUST Department
KAUST Solar Center (KSC)Material Science and Engineering
Material Science and Engineering Program
Physical Characterization
Physical Science and Engineering (PSE) Division
Date
2020-11-11Submitted Date
2020-09-01Permanent link to this record
http://hdl.handle.net/10754/665717
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Show full item recordAbstract
The intriguing properties of halide perovskites have led to high-performance optoelectronic devices. Recently, tin (Sn) halide perovskites have attracted significant interest for thermoelectrics owing to their high electrical conductivity and low thermal conductivity. In this work, we evaluate the thermoelectric performance of Sn and binary tin-lead (Sn-Pb) hybrid perovskites. Leveraging the oxidative nature of Sn, air treatment of the perovskite films led to improved thermoelectric performance due to self-doping. The film conductivity increases significantly with a semiconductor to quasi-metallic transition upon air exposure. In addition, this enhanced electrical conductivity was preserved after controlled air exposure for extended period of time. An increase of 42% and 83% in the thermoelectric power factor of CH3NH3SnI3 and CH3NH3Sn0.75Pb0.25I3 was observed, respectively after air treatment compared to pristine films at 336 K. Apart from thermoelectrics, the implications of this work are relevant to other perovskite devices such as solar cells and LEDs.Citation
Haque, M. A., Hernandez, L. H., Davaasuren, B., Villalva, D. R., Troughton, J., & Baran, D. (2020). Tuning the Thermoelectric Performance of Hybrid Tin Perovskites by Air Treatment. Advanced Energy and Sustainability Research, 2000033. doi:10.1002/aesr.202000033Publisher
WileyAdditional Links
https://onlinelibrary.wiley.com/doi/10.1002/aesr.202000033ae974a485f413a2113503eed53cd6c53
10.1002/aesr.202000033
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