Novel Phenothiazine‐Based Self‐Assembled Monolayer as a Hole Selective Contact for Highly Efficient and Stable p‐i‐n Perovskite Solar Cells
Novel Phenothiazine‐Based Self‐Assembled Monolayer as a Hole Selective Contact for Highly Efficient and Stable p‐i‐n Perovskite Solar Cells
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DOI：
10.1002/aenm.202103175
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发表时间：
2021-11
影响因子：
27.8
通讯作者：
A. Ullah;Keun Hyeong Park;H. D. Nguyen;Y. Siddique;S. F. Shah;Huyen Tran;Sunghyeok Park;Seok In Lee;Kyung‐Koo Lee;C. Han;Kihwan Kim;SeJin Ahn;Inyoung Jeong;Y. S. Park;Sungjun Hong
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作者：
A. Ullah;Keun Hyeong Park;H. D. Nguyen;Y. Siddique;S. F. Shah;Huyen Tran;Sunghyeok Park;Seok In Lee;Kyung‐Koo Lee;C. Han;Kihwan Kim;SeJin Ahn;Inyoung Jeong;Y. S. Park;Sungjun Hong
钙钛矿太阳能电池（PSC）性能的最新进展与改进的界面工程和电荷选择性接触密切相关。在这里，介绍了一种新型的和具有成本竞争力的基于吩噻嗪的自组装单层（SAM）作为p-i-n PSC的空穴选择性接触。分子定制的SAM能够与钙钛矿吸收剂形成能量良好对准的界面，最大限度地减少非辐射界面复合损失，从而显着改善电荷提取/传输和器件性能。由此产生的PSC表现出高达22.44%的功率转换效率（PCE）（认证为21.81%），平均填充因子接近81%，这是迄今为止报道的p-i-n PSC的最高效率之一。新SAM还展示了PSC出色的运行稳定性，在模拟1个太阳光照下连续跟踪100小时的最大功率点期间，PCE从20.3%增加到21.8%。报道的研究结果强调了工程自组装膜在制造稳定和高性能PSC方面的巨大潜力。
Recent advances in perovskite solar cells (PSCs) performance have been closely related to improved interfacial engineering and charge selective contacts. Here, a novel and cost‐competitive phenothiazine based, self‐assembled monolayer (SAM) as a hole‐selective contact for p‐i‐n PSCs is introduced. The molecularly tailored SAM enables an energetically well‐aligned interface with the perovskite absorber, with minimized nonradiative interfacial recombination loss, thus dramatically improving charge extraction/transport and device performance. The resulting PSCs exhibit a power conversion efficiency (PCE) of up to 22.44% (certified 21.81%) with an average fill factor close to 81%, which is among the highest efficiencies reported to date for p‐i‐n PSCs. The new SAM also demonstrates the outstanding operational stability of the PSC, with increasing PCE from 20.3% to 21.8% during continuous maximum power point tracking under a simulated 1 sun illumination for 100 h. The reported findings highlight the great potential of engineered SAMs for the fabrication of stable and high performing PSCs.