Design of high efficiency perovskite solar cells based on inorganic and organic undoped double hole layer

材料科学 能量转换效率 光电子学 钙钛矿(结构) 光伏系统 吸收(声学) 钙钛矿太阳能电池 图层(电子) 阳极 带隙 兴奋剂 太阳能电池 光电效应 化学工程 纳米技术 电极 化学 复合材料 物理化学 生态学 工程类 生物
作者
Feng Qin,Jing Chen,Jiangwei Liu,Li Liu,Chaojun Tang,Bin Tang,Gongfa Li,Liangcai Zeng,Hailiang Li,Zao Yi
出处
期刊:Solar Energy [Elsevier BV]
卷期号:262: 111796-111796 被引量:81
标识
DOI:10.1016/j.solener.2023.111796
摘要

The use of organic and inorganic double hole layers allows for efficient tuning of the matching of energy levels between each layer and improve the photovoltaic performance and stability of perovskite solar cells (PSCs). However, the cost of band matching for preparing perovskite cells is huge. In this paper, the effect of double hole layer on the performance of PSCs is analyzed by theoretical calculation, and an optimized structure of PSCs is proposed. The traditional Spiro-OMeTAD and MAPbI3 absorption layers are added with copper oxide (CuO) hole layers. The Solar Capacitor One-dimensional Tool (SCAPS) is used to simulate the relationship between the energy level matching of the hole layer and the photoelectric conversion efficiency (PCE) of the cell, and then the photovoltaic conversion performance is optimized accordingly. The results show a CuO hole layer with an energy gap of 1.5 can reduce the direct recombination of electron and hole pairs in the recombination layer, thereby increasing the filling factor (FF), while Spiro-OMeTAD can reduce electron recombination in the anode, thereby increasing short circuit current (Jsc). The FF and Jsc is increased simultaneously with the addition of a 200 nm CuO layer, which results in the increase of PCE from 16.82% to 21.82%. In addition, the absorption spectra and power density distributions of the two structures were calculated, and the mechanism of high absorption under different bands was explored. The effect of different material thickness and doping concentration on the photoelectric performance was studied, and the optimal parameters of the solar cell were determined, which increases the PCE by 5.95%. The cell structure proposed in this research can provide theoretical guidance for the development of such experiments and provide a novel design idea for structural optimization of PSCs.
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