Effect of halide ion replacement of RbGeX3 absorber material on the photovoltaic performance of pure inorganic perovskite solar cells

Jayan K. Deepthi; Anagha V.

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Effect of halide ion replacement of RbGeX3 absorber material on the photovoltaic performance of pure inorganic perovskite solar cells

机译：Effect of halide ion replacement of RbGeX3 absorber material on the photovoltaic performance of pure inorganic perovskite solar cells

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Abstract This work describes the optimization of photovoltaic parameters of the inorganic perovskite solar cell (PSC) with RbGeX3 (X = I, Br, Cl) as the absorber layer, employing the DFT based absorption spectrum and band gap estimated with the help of WIEN2k software. For analysing the PSC using SCAPS 1D tool, IGZO and Cu2O are incorporated as the electron transporting layer and hole transporting layer respectively. Using Au as metal at the back electrode, the device configuration exhibits a peak PCE of 13.79% for RbGeI3 based PSC when the SCAPS conventional absorption spectrum for RbGeI3 is used for the study. However, when absorption spectrum obtained by DFT principles is employed for RbGeI3, device configuration exhibits a PCE of 6.49%. Our study shows that the absorption spectrum generated by DFT calculations is more reliable and accurate as it incorporates minute variations of absorption with quantum mechanical level of accuracy for different wavelengths of the incident light. When the halide ion I− of the perovskite structure, RbGeI3 is replaced by Br− or Cl−, the device configurations exhibited PCE values of 10.09% and 3.69% respectively with SCAPS default absorption spectrum, mainly due to the increase in bandgap of the resulting perovskite structures, RbGeBr3 and RbGeCl3 while a PCE of 2.87% and 1.48% are achieved for device configurations with DFT absorption spectra of RbGeBr3 and RbGeCl3 respectively.

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《Optical and Quantum Electronics》 |2023年第10期|共5页
作者
Jayan K. Deepthi; Anagha V.;
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作者单位

Rajagiri School of Engineering and Technology (Autonomous);

Kannur University;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学;
关键词
SCAPS 1D; WIEN2k; Density functional theory; Performance optimization; Modelling study;

Effect of halide ion replacement of RbGeX3 absorber material on the photovoltaic performance of pure inorganic perovskite solar cells

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