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首页> 外文会议>応用物理学会春季学術講演会;応用物理学会 >Inverted CsPbI_2Br Perovskite Solar Cells with Enhanced Efficiency and Stability in Ambient Atmosphere via Formamidinium Incorporation
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Inverted CsPbI_2Br Perovskite Solar Cells with Enhanced Efficiency and Stability in Ambient Atmosphere via Formamidinium Incorporation

机译：通过甲脒掺入，倒置CSPBI_2BR PEROVSKITE太阳能电池具有增强的环境气氛中的效率和稳定性

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摘要

CsPbI_2Br is expected to be a candidate for the top layer of the all perovskite tandem solar cells. However, the perovskite is prone to change the phase from α (black) to δ (yellow) type. In this research, Cs_(1-x)FA_xPbI_2Br perovskites were fabricated in ambient atmosphere and their properties immediately after fabrication and the phase stability were investigated. The quality of the perovskite films was enhanced and the trap density was reduced after the incorporation of the FA cations. The phase stability of the Cs_(1-x)FA_xPbI_2Br perovskite was effectively enhanced. Consequently, the highest power conversion efficiency of 12.28% with open-circuit voltage (Voc) of 1.09 V, current intensity (Jsc) of 15.65 mA cm~(-2), and fill factor of 72% in the planar solar cell based on Cs_(0.7)FA_(0.3)PbI_2Br perovskite was achieved. The band gap was optimized to be about 1.82 eV suitable for all perovskite tandem top layer. Most importantly, all the photovoltaic parameters of Cs_(0.7)FA_(0.3)PbI_2Br perovskite solar cells showed ignorable decay after 2 months’ measurement in ambient atmosphere with the presence of air and humidity without encapsulation.
机译：CSPBI_2BR预计将成为所有Perovskite串联太阳能电池的顶层的候选者。然而，钙钛矿易于将α（黑色）变为δ（黄色）类型的阶段。在本研究中，CS_（1-X）FA_XPBI_2BR PEROVSKITE在环境气氛中制造，并在制造后立即进行其性质，并研究了相位稳定性。提高了钙钛矿薄膜的质量，并在加入FA阳离子后降低了陷阱密度。 CS_（1-X）FA_XPBI_2BR PEROVSKITE的相位稳定性得到了有效增强。因此，最高功率转换效率为12.28％，开路电压（VOC）为1.09 V，电流强度（JSC）为15.65 mA cm〜（-2），并且基于平面太阳能电池填充为72％的填充率CS_（0.7）FA_（0.3）PBI_2BR PEROVSKITE是实现的。带隙优化为约1.82 eV适用于所有钙钛矿串联顶层。最重要的是，所有CS_（0.7）FA_（0.3）PBI_2BR PEROVSKITE太阳能电池的所有光伏参数在环境气氛中测量后2个月的测量，空气和湿度没有封装的情况下显示出无虹膜衰竭。

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