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Nanoporous p-type NiOx electrode for p-i-n inverted perovskite solar cell toward air stability
Materials Today ( IF 21.1 ) Pub Date : 2018-06-01 , DOI: 10.1016/j.mattod.2017.12.002
Sawanta S. Mali , Hyungjin Kim , Hyun Hoon Kim , Sang Eun Shim , Chang Kook Hong

Abstract Designing air-stable perovskite solar cells (PSCs) is a recent trend in low-cost photovoltaic technology. Metal oxide-based electron transporting layers (ETLs) and hole transporting layers (HTLs) have attracted tremendous attention in PSCs, because of their excellent air stability, high electron mobility, and optical transparency. Herein, we report a co-precipitation method for the synthesis of p-type nanoporous nickel oxide (np-NiOx) thin films as the HTL for inverted (p-i-n) PSCs. The best-performing p-i-n PSC having np-NiOx HTL, (FAPbI3)0.85(MAPbBr3)0.15 (herein FAPbI3 stands for formamidinium lead iodide and MAPbBr3 stands for methylammonium lead bromide) perovskite and phenyl-C61-butyric acid methyl ester (PCBM)/ZnO ETL exhibited a 19.10% (±1%) power conversion efficiency (PCE) with a current density (JSC) of 22.76 mA cm−2, open circuit voltage (VOC) of 1.076 V and fill factor (FF) of 0.78 under 1 sun (100 mW cm−2). Interestingly, the developed p-i-n PSCs based on p-type NiOx and n-type ZnO could retain >80% efficiency after 160 days, which is much higher than conventional PEDOT:PSS HTL-based PSCs. Our findings provide air-stable perovskite solar cells with high efficiency.

中文翻译:

用于针倒钙钛矿太阳能电池的纳米多孔 p 型 NiOx 电极朝向空气稳定性

摘要 设计空气稳定钙钛矿太阳能电池 (PSC) 是低成本光伏技术的最新趋势。基于金属氧化物的电子传输层 (ETL) 和空穴传输层 (HTL) 在 PSC 中引起了极大的关注,因为它们具有优异的空气稳定性、高电子迁移率和光学透明度。在此,我们报告了一种用于合成 p 型纳米多孔氧化镍 (np-NiOx) 薄膜的共沉淀方法,作为倒置 (pin) PSC 的 HTL。性能最好的 pin PSC 具有 np-NiOx HTL,(FAPbI3)0.85(MAPbBr3)0.15(此处 FAPbI3 代表甲脒碘化铅,MAPbBr3 代表甲基溴化铅)钙钛矿和苯基-C61-丁酸甲酯(PCBM)/ ZnO ETL 表现出 19.10% (±1%) 的功率转换效率 (PCE),电流密度 (JSC) 为 22.76 mA cm-2,开路电压 (VOC) 为 1.076 V,填充因数 (FF) 为 0.78,在 1 个阳光下 (100 mW cm−2)。有趣的是,基于 p 型 NiOx 和 n 型 ZnO 开发的 pin PSC 在 160 天后可以保持 >80% 的效率,这远高于传统的基于 PEDOT:PSS HTL 的 PSC。我们的研究结果提供了高效率的空气稳定钙钛矿太阳能电池。
更新日期:2018-06-01
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