High Charge Carrier Mobilities And Long Diffusion Lengths In Tin Based Metal Halide PerovskitePaper (MM3)
Wed, 11 Nov 2020 03:15pm to 03:30pm
Tin (Sn)-based perovskites are promising for lower band gap and tandem solar cells due to their red-shifted band gap towards the infrared region. However, Sn-based hybrid metal halide perovskite is well known to suffer rapid photoconductivity decay due to the oxidation of Sn2+ to Sn4+ under atmospheric oxygen. Here, the charge carrier dynamics of tin based metal halide perovskite is investigated using optical pump–terahertz probe (OPTP) spectroscopy. Also, the performance of the perovskite films at different annealing temperatures is compared and the best performing temperature is identified. The Sn-based perovskite films exhibited a remarkable charge carrier mobility and diffusion length.
Authors: Adeyemo, Stephanie O.; Kar, Srabani; Silva, Shashini; Jayawardena, Imalka; Silva, Ravi; Joyce, Hannah J.
Advanced Technology Institute, University of Surrey, Electrical Engineering Division, Department of Engineering, University of Cambridge