Beyond perovskite solar cells: tellurium iodide as a promising light-absorbing material for solution-processed photovoltaic application

Beyond perovskite solar cells: tellurium iodide as a promising light-absorbing material for solution-processed photovoltaic application

Searching new light-absorbing materials to replace toxic lead halide in solar cells is very important and highly desirable. In this research, we firstly demonstrated that tellurium iodide (TeI4 ) could be used as a light-absorbing material in solar cells due to its suitable optical band gap and the...

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Bibliographic Details
Main Authors: Ahmed Ali Said, Xie, Jian, Zhao, Kexiang, Liu, Wenbo, Yu, Fei, Zhang, Qichun
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2022
Subjects:
Engineering::Materials
Lead-Free Solar Cells
Beyond Perovskite Solar Cells
Online Access:https://hdl.handle.net/10356/155215
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Institution: Nanyang Technological University
Language: English
Description
Summary:Searching new light-absorbing materials to replace toxic lead halide in solar cells is very important and highly desirable. In this research, we firstly demonstrated that tellurium iodide (TeI4 ) could be used as a light-absorbing material in solar cells due to its suitable optical band gap and the active lone-pair electron orbital in Te4+ . The best power conversion efficiency (PCE=3.56%) was achieved with a concentration of 0.9 M TeI4 in DMF:DMSO (4 : 1, v,v) without any heat treatment or antisolvent dripping. Our study indicates the promising potential of TeI4 for photovoltaic and optoelectronic applications.

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