甲脒
三碘化物
钙钛矿(结构)
钝化
卤化物
材料科学
涂层
相(物质)
能量转换效率
化学工程
化学
光电子学
无机化学
复合材料
有机化学
图层(电子)
物理化学
工程类
电解质
色素敏化染料
电极
作者
Jung‐Woo Yoo,Eunseo Noh,Jihun Jang,Kyoung Su Lee,Junseop Byeon,Man-Young Choi,Jino Im,Sang Il Seok
出处
期刊:Joule
[Elsevier]
日期:2023-04-01
卷期号:7 (4): 797-809
被引量:5
标识
DOI:10.1016/j.joule.2023.03.003
摘要
The higher thermodynamic stability of formamidinium lead triiodide (FAPbI3) in the yellow non-perovskite (δ-phase) than the black perovskite (α-phase) at room temperature causes spontaneous α-phase to δ-phase transition. Stabilization of α-FAPbI3 by alloying the perovskite composition is limited by band gap broadening and halide segregation. Furthermore, commercial PSCs require coating methods suitable for large-area modules. Herein, we report α-phase stabilization of FAPbI3 without band gap broadening using R4N+ cations and Cl− anions. Subsequently, high-efficiency perovskite solar mini-modules (PSMs) were fabricated using a bar-coating process with simultaneous defect passivation and hole-transport promotion which exhibited a maximum power conversion efficiency (PCE) of 21.23% (certified 20.33%, 36.4-cm2 area). The PCE in the 1-cm2 area fabricated by bar-coating was 23.24% (certified 22.79%, the highest in those fabricated by scalable bar-coating method). Furthermore, the encapsulated PSM retained 93% of its initial PCE, even after 870 h under continuous one-sun illumination.
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