期刊
ADVANCED ENERGY MATERIALS
卷 -, 期 -, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202302743
关键词
acrylamide; cross-linking; perovskite solar cells
This study demonstrates a method using light-induced cross-linking to fabricate highly efficient and stable perovskite solar cells. The cross-linked perovskite film shows improved crystal orientation, larger grain size, and protection from water corrosion. Devices fabricated using this method achieve excellent power conversion efficiency and storage stability.
Mixed-halide perovskites have emerged as outstanding light absorbers that enable the fabrication of efficient solar cells; however, their instability hinders the commercialization of such systems. Grain-boundary (GB) defects and lattice tensile strain are critical intrinsic-instability factors in polycrystalline perovskite films. In this study, the light-induced cross-linking of acrylamide (Am) monomers with non-crystalline perovskite films is used to fabricate highly efficient and stable perovskite solar cells (PSCs). The Am monomers induce the preferred crystal orientation in the polycrystalline perovskite films, enlarge the perovskite grain size, and cross-link the perovskite grains. Additionally, the liquid properties of Am effectively releases lattice strain during perovskite-film crystallization. The cross-linked interfacial layer functions as an airtight wall that protects the perovskite film from water corrosion. Devices fabricated using the proposed strategy show an excellent power conversion efficiency (PCE) of 24.45% with an open-circuit voltage (VOC) of 1.199 V, which, to date, is the highest VOC reported for hybrid PSCs with electron transport layers (ETLs) comprised of TiO2. Large-area PSC modules fabricated using the proposed strategy show a power conversion efficiency of 20.31% (with a high fill factor of 77.1%) over an active area of 33 cm2, with excellent storage stability. The acrylamide treatment before perovskite crystallization, and light-induced cross-linking (ABC) strategy can not only passivate defects between grain boundaries but also induce the preferred crystal orientation in polycrystalline perovskite films. Finally, devices fabricated using the proposed strategy show an excellent power conversion efficiency (PCE) of 24.45%, and large-area perovskite solar cell modules show a PCE of 20.31% (33 cm2).image
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据