光伏
材料科学
光伏系统
带隙
钙钛矿(结构)
光电子学
二极管
发光二极管
能量转换效率
工程物理
电气工程
化学工程
物理
工程类
作者
Ming‐Ju Wu,Chien‐Chen Kuo,Lu‐Syuan Jhuang,Po‐Han Chen,Yi‐Fong Lai,Fang‐Chung Chen
标识
DOI:10.1002/aenm.201901863
摘要
Abstract Indoor photovoltaics (IPVs) are attracting renewed interest because they can provide sustainable energy through the recycling of photon energy from household lighting facilities. Herein, the Shockley–Queisser model is used to calculate the upper limits of the power conversion efficiencies (PCEs) of perovskite solar cells (PeSCs) for two types of artificial light sources: fluorescent tubes (FTs) and white light–emitting diodes (WLEDs). An unusual zone is found in which the dependence of the PCEs on the bandgap ( E g ) under illumination from the indoor lighting sources follows trends different from that under solar irradiation. In other words, IPVs exhibiting high performance under solar irradiation may not perform well under indoor lighting conditions. Furthermore, the ideal bandgap energy for harvesting photonic power from these indoor lighting sources is ≈1.9 eV—a value higher than that of common perovskite materials (e.g., for CH 3 NH 3 PbI 3 ). Accordingly, Br − ions are added into the perovskite films to increase their values of E g . A resulting PeSC featuring a wider bandgap exhibits PCEs of 25.94% and 25.12% under illumination from an FT and a WLED, respectively. Additionally, large‐area (4 cm 2 ) devices are prepared for which the PCE reaches ≈18% under indoor lighting conditions.
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