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A novel Lead-free material Cs2PtI6 with Narrow Bandgap and Ultra-Stable for Its Photovoltaic Application.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-09-15 , DOI: 10.1021/acsami.0c11429 Shuzhang Yang 1 , Liang Wang 1 , Shuai Zhao 2 , Anmin Liu 3 , Yi Zhou 3 , Qianji Han 1 , Fengyang Yu 1 , Liguo Gao 3 , Chu Zhang 4 , Tingli Ma 1, 4
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-09-15 , DOI: 10.1021/acsami.0c11429 Shuzhang Yang 1 , Liang Wang 1 , Shuai Zhao 2 , Anmin Liu 3 , Yi Zhou 3 , Qianji Han 1 , Fengyang Yu 1 , Liguo Gao 3 , Chu Zhang 4 , Tingli Ma 1, 4
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Lead halide perovskite has in recent years gained widespread interest due to its excellent physical and chemical properties, as well as superior optoelectronic performance. However, some restrictions still preclude full industrialization of the material, in particular toxicity issues and instability as a result to sensitivity to humidity. Lead-free all-inorganic double perovskite materials have thus recently become a focus of research. Herein, a new narrow bandgap lead-free double perovskite solar cell with a high-quality Cs2PtI6 film is proposed. It exhibits an optical bandgap of 1.37 eV, absorption within a wide range of wavelengths, and a high absorption coefficient. Following optimization, the device displays a best power conversion efficiency of 0.72% with an open-circuit voltage of 0.73 V, a short-circuit current of 1.2 mA/cm2, and a fill factor of 0.82. Crucially, it also demonstrates excellent stability when exposed to extreme conditions such as high humidity, high temperature, and UV-light irradiation. Stability tests show that the PSCs can retain almost 80% of the original efficiency over 60 days stored in ambient temperature without any encapsulation, boosting prospects for applications of lead-free perovskite solar cells.
中文翻译：
具有窄带隙和超稳定的新型无铅材料Cs2PtI6在光伏中的应用。
近年来，钙钛矿卤化物因其出色的物理和化学性能以及优异的光电性能而引起了广泛的关注。然而，一些限制仍然阻止了材料的完全工业化，特别是由于对湿度敏感而导致的毒性问题和不稳定性。因此，无铅全无机双钙钛矿材料已成为最近的研究重点。此处，介绍了一种新型的具有高品质Cs 2 PtI 6的窄带隙无铅双钙钛矿太阳能电池电影被提议。它显示出1.37 eV的光学带隙，在宽波长范围内的吸收和高吸收系数。经过优化后，该器件在0.73 V的开路电压，1.2 mA / cm 2的短路电流和0.82的填充系数下显示出0.72％的最佳功率转换效率。至关重要的是，当暴露于高湿度，高温和紫外线照射等极端条件下时，它也表现出出色的稳定性。稳定性测试表明，PSC可以在环境温度下储存60天，而无需任何封装，可以保持原始效率的80％，这提高了无铅钙钛矿太阳能电池的应用前景。
更新日期：2020-10-07
中文翻译：
具有窄带隙和超稳定的新型无铅材料Cs2PtI6在光伏中的应用。
近年来，钙钛矿卤化物因其出色的物理和化学性能以及优异的光电性能而引起了广泛的关注。然而，一些限制仍然阻止了材料的完全工业化，特别是由于对湿度敏感而导致的毒性问题和不稳定性。因此，无铅全无机双钙钛矿材料已成为最近的研究重点。此处，介绍了一种新型的具有高品质Cs 2 PtI 6的窄带隙无铅双钙钛矿太阳能电池电影被提议。它显示出1.37 eV的光学带隙，在宽波长范围内的吸收和高吸收系数。经过优化后，该器件在0.73 V的开路电压，1.2 mA / cm 2的短路电流和0.82的填充系数下显示出0.72％的最佳功率转换效率。至关重要的是，当暴露于高湿度，高温和紫外线照射等极端条件下时，它也表现出出色的稳定性。稳定性测试表明，PSC可以在环境温度下储存60天，而无需任何封装，可以保持原始效率的80％，这提高了无铅钙钛矿太阳能电池的应用前景。
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