材料科学
光伏系统
透射率
光电子学
钙钛矿(结构)
能量转换效率
不透明度
化学工程
光学
电气工程
物理
工程类
作者
Xin Yi,Shengwen Zou,Jinlong Jin,Guangxin Liu,Xiaojun Yan,Jianmei Huang
出处
期刊:Small
[Wiley]
日期:2024-10-14
标识
DOI:10.1002/smll.202406986
摘要
Abstract Smart photovoltaic windows (SPWs) provide a high‐efficiency and energy‐saving strategy owing to the dual capabilities of electricity generation and sunlight modulation achieved by tunable colors and transmittances. Due to the deterioration of chromic process on photovoltaic layers, SPWs usually suffer from poor cycling stability. Moreover, thermochromic SPWs with a multilayer structure usually change transmittance without reversible color transitions. To address these issues, inspired by chameleon skin, bionic SPWs are designed and constructed by integrating hydrogel, CsPbBr 3 semitransparent perovskite solar cells (ST‐PSCs), and transparent polymer film. The SPWs realize reversible transitions between transparent green (25 °C) and opaque yellow (45 °C) states in a short duration (2 min) under natural conditions. By optimizing perovskite film and ultrathin‐metal electrodes, CsPbBr 3 ST‐PSCs achieve a good trade‐off between transmittance and efficiency, delivering the highest photovoltaic efficiency (8.35%) and a record light utilization efficiency (4.43). Ultimately, the multilayer SPWs maintain stable optical properties and more than 88% initial conversion efficiency after 100 transition cycles, presenting excellent cycling stability. This study proposes a novel approach and device structure for SPWs with high cycling stability, switchable colors, and switchable transmittances. It also paves the way for smart photovoltaic deployment in buildings and many other fields.
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