Design and optimization of high-performance eco-friendly perovskite solar cells: Utilizing FAMASnGeI3 and CsGeI3 as absorbers and tuning HTL and interface parameters

IF 2.6 4区 物理与天体物理 Q2 PHYSICS, APPLIED
Pritam Kumar, Brajendra Singh Sengar, Amitesh Kumar
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引用次数: 0

Abstract

In this work, several designs of lead-based and lead-free perovskite solar cells (PSCs) have been developed and investigated. For the proposed designs, CH3NH3PbI3 (lead-based), FAMASnGeI3, and CsGeI3 (lead-free) are used as absorber materials, Cu2O and NiO have been used as Hole Transport Layer (HTL) materials and TiO2 as Electron Transport Layer (ETL) materials. ETL materials, in general, have more concern with stability issues and HTL materials have more issues with efficiency improvements. The effect of changing thickness, doping density and defect density of the absorber layer, as well as HTL, defect density of absorber/HTL interface and work functions of front and back contacts on the performance of the proposed devices, are investigated. To enhance the device performance, optimization of the device parameters is performed. After optimization of different parameters, it is observed that the lead-based device structure TiO2/CH3NH3PbI3/NiO has a maximum efficiency of 29.94%. Even the corresponding lead-free device structure TiO2/CsGeI3/NiO exhibits a maximum efficiency of 29.19%. Additionally, this study delved into the influence of altering series and shunt resistances, as well as temperature on the operational characteristics of the lead-free optimized device. Such eco-friendly and cost-effective alternatives as lead-free perovskite cells can be very promising for future work.

设计和优化高性能环保型过氧化物太阳能电池:利用 FAMASnGeI3 和 CsGeI3 作为吸收体并调整 HTL 和界面参数
在这项工作中,开发并研究了几种铅基和无铅包晶体太阳能电池(PSCs)的设计。在提出的设计中,CH3NH3PbI3(铅基)、FAMASnGeI3 和 CsGeI3(无铅)被用作吸收材料,Cu2O 和 NiO 被用作空穴传输层(HTL)材料,TiO2 被用作电子传输层(ETL)材料。一般来说,ETL 材料更关注稳定性问题,而 HTL 材料更关注效率的提高。我们研究了改变吸收层的厚度、掺杂密度和缺陷密度,以及 HTL、吸收层/HTL 接口的缺陷密度和前后触点的功函数对所提器件性能的影响。为提高器件性能,对器件参数进行了优化。在对不同参数进行优化后,发现铅基器件结构 TiO2/CH3NH3PbI3/NiO 的最高效率为 29.94%。相应的无铅器件结构 TiO2/CsGeI3/NiO 的最高效率也达到了 29.19%。此外,这项研究还探讨了改变串联和并联电阻以及温度对无铅优化器件工作特性的影响。在未来的工作中,无铅包晶石电池这种生态友好且经济高效的替代品将大有可为。
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来源期刊
International Journal of Modern Physics B
International Journal of Modern Physics B 物理-物理:凝聚态物理
CiteScore
3.70
自引率
11.80%
发文量
417
审稿时长
3.1 months
期刊介绍: Launched in 1987, the International Journal of Modern Physics B covers the most important aspects and the latest developments in Condensed Matter Physics, Statistical Physics, as well as Atomic, Molecular and Optical Physics. A strong emphasis is placed on topics of current interest, such as cold atoms and molecules, new topological materials and phases, and novel low dimensional materials. One unique feature of this journal is its review section which contains articles with permanent research value besides the state-of-the-art research work in the relevant subject areas.
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