材料科学
钙钛矿(结构)
卤化物
碘化物
能量转换效率
带隙
光电子学
离子
同质性(统计学)
化学工程
纳米技术
无机化学
有机化学
化学
工程类
统计
数学
作者
Xiuxiu Niu,Nengxu Li,Zhenhua Cui,Liang Li,Fengtao Pei,Yisha Lan,Qizhen Song,Yujiang Du,Jing Dou,Zhaoboxun Bao,Lina Wang,Huifen Liu,Kailin Li,Xinran Zhang,Zijian Huang,Lan Wang,Wentao Zhou,Guizhou Yuan,Yihua Chen,Huanping Zhou
标识
DOI:10.1002/adma.202305822
摘要
Wide-bandgap perovskites are promising absorbers for state-of-the-art tandem solar cells to feasibly surpass Shockley-Queisser limit with low cost. However, the commonly used mixed halide perovskites suffer from poor stability; particularly, photoinduced phase segregation. Electrospray deposition is developed to bridge the gap of growth rate between iodide and bromide components during film growth by spatially confining the anion diffusion and eliminating the kinetic difference, which universally improves the initial homogeneity of perovskite films regardless of device architectures. It thus promotes the efficiency and stability of corresponding solar cells based on wide-bandgap (1.68 eV) absorbers. Remarkable power conversion efficiencies (PCEs) of 21.44% and 20.77% are achieved in 0.08 cm2 and 1.0 cm2 devices, respectively. In addition, these devices maintain 90% of their initial PCE after 1550 h of stabilized power output (SPO) tracking upon one sun irradiation (LED) at room temperature.
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