Enhanced Photovoltaic Performance of FASnI3-Based Perovskite Solar Cells with Hydrazinium Chloride Coadditive,ACS Energy Letters

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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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