Thermal Evaporated Bismuth Triiodide (BiI3) Thin Films for Photovoltaic Applications

被引：0
|
作者：
Natália F. Coutinho
Rafael B. Merlo
Nelson F. V. Borrero
Francisco C. Marques
机构：
[1] UNICAMP,‘Gleb Wataghin’ Institute of Physics
来源：
MRS Advances | 2018年 / 3卷 / 55期
关键词：
D O I：
10.1557/adv.2018.405
中图分类号：
学科分类号：
摘要：
Bismuth triiodide (BiI3) is a potential candidate for application in solar cell due to its good optoelectronic properties and because it is free of toxic elements. It can be used as the absorber material in solar cells or converted into the perovskite-like material MA3Bi2I9, suitable also for photovoltaic applications. Bismuth triiodide has been prepared by physical vapour transport (PVT) and by solution process through spin coating. In this work we present optical and structural/topological properties of BiI3 deposited by thermal evaporation under high vacuum. The films are slightly tensile, polycrystalline, homogenously distributed and with good adherence on several substrates, with an indirect bandgap of 1.81 eV, index of refraction of 3.3 (630 nm), photoluminescence centered at 1.74 eV and a Raman peak at 118cm-1 associated with the Ag mode.
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页码：3233 / 3236
页数：3
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