Beyond perovskite solar cells: tellurium iodide as a promising light-absorbing material for solution-processed photovoltaic application
| Autor: | Ahmed Ali Said, Wenbo Liu, Fei Yu, Jian Xie, Qichun Zhang, Kexiang Zhao |
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| Přispěvatelé: | School of Materials Science and Engineering |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials [Engineering]
business.industry Band gap Organic Chemistry Photovoltaic system Energy conversion efficiency Beyond Perovskite Solar Cells Halide Electron orbital General Chemistry Biochemistry Solution processed chemistry.chemical_compound chemistry Tellurium iodide Optoelectronics Lead-Free Solar Cells business Perovskite (structure) |
| Popis: | 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. Ministry of Education (MOE) Q.Z.acknowledges financial support from AcRF Tier 1 (RG 111/17,RG 2/17,RG 114/16,RG 8/16) and Tier 2 (MOE2017-T2-1-021 and MOE2018-T2-1-070),Singapore. |
| Databáze: | OpenAIRE |
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