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Enhanced Photovoltaic Performance of FASnI3-Based Perovskite Solar Cells with Hydrazinium Chloride Coadditive
ACS Energy Letters ( IF 19.3 ) Pub Date : 2018-06-11 00:00:00 , DOI: 10.1021/acsenergylett.8b00645
Md. Emrul Kayesh 1, 2 , Towhid H. Chowdhury 1 , Kiyoto Matsuishi 3 , Ryuji Kaneko 1, 4 , Said Kazaoui 5 , Jae-Joon Lee 6 , Takeshi Noda 1 , Ashraful Islam 1
Affiliation  

For the fabrication of efficient Sn-based perovskite solar cells (PSCs), deposition of uniform and pinhole-free perovskite films with low Sn4+ content remains a crucial factor. In this work, we present a coadditive engineering process by introduction of hydrazinium chloride (N2H5Cl) in a single precursor solvent system to fabricate FASnI3 perovskite films. The successful integration of N2H5Cl results in reduced concentration of Sn4+ content by 20% in the FASnI3 film leading to suppressed carrier recombination and pinhole-free uniform coverage. These remarkable improvements in the FASnI3 film results in power conversion efficiency (PCE) of Sn-based PSC up to 5.4% due to a significant increase in open-circuit voltage. Moreover, the best PSC without encapsulation showed stable shelf life up to 1000 h while retaining 65% of its initial PCE.

中文翻译:

含氯化Co共添加剂的基于FASnI 3的钙钛矿太阳能电池的光伏性能增强

为了制造高效的基于Sn的钙钛矿太阳能电池(PSC),沉积具有低Sn 4+含量的均匀且无针孔的钙钛矿薄膜仍然是关键因素。在这项工作中,我们通过在单个前体溶剂体系中引入氯化肼(N 2 H 5 Cl)来制造FASnI 3钙钛矿薄膜,提出了一种共添加的工程过程。N 2 H 5 Cl的成功整合导致FASnI 3膜中Sn 4+含量的浓度降低了20%,从而导致载流子复合受到抑制,并且无针孔均匀覆盖。FASnI 3的这些显着改进由于开路电压的显着增加,薄膜使Sn基PSC的功率转换效率(PCE)高达5.4%。此外,没有封装的最佳PSC在长达1000小时的情况下表现出稳定的保存期限,同时保留了其初始PCE的65%。
更新日期:2018-06-11
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