Near-Ultraviolet Indoor Black Light-Harvesting Perovskite Solar Cells.
Near-Ultraviolet Indoor Black Light-Harvesting Perovskite Solar Cells.
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DOI：
10.1021/acsaem.2c01560
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发表时间：
2022-12-26
影响因子：
6.4
通讯作者：
Ivaturi, Aruna
中科院分区：
文献类型：
--
作者：
Oli, Arivazhagan Valluvar;Li, Zinuo;Chen, Yu;Ivaturi, Aruna
关键词：
室内光能收集太阳能电池有着悠久的历史，钙钛矿太阳能电池（PSC）最近成为具有高功率转换效率（PCE）的潜在候选者。然而，几乎所有已报道的室内光收集太阳能电池研究都利用可见波长的白光。尽管光子能量较高，但在室内环境下使用的低波长近紫外 (UV) 光并未受到关注。在这项研究中，首次研究了钙钛矿太阳能电池从市售近紫外 (UV-A) 室内 LED 灯（395-400 nm）中收集能量。这些近紫外线灯也称为黑光灯，通常用于装饰（例如，酒吧、酒馆、水族馆、派对、俱乐部、人体艺术工作室、霓虹灯以及圣诞节和万圣节装饰）。使用 CH3NH3PbI3 吸收剂的 n-i-p 结构的优化钙钛矿太阳能电池在近紫外室内 LED 的不同照明强度下进行了制造和表征。在 3.76 mW/cm2 的紫外线照射下测量时，冠军器件的 PCE 和功率输出分别为 20.63% 和 775.86 μW/cm2。在近紫外光下老化 24 小时后，这些器件保留了 84.10% 的初始 PCE。紫外线照射对器件性能的影响已得到全面表征。此外，采用改性电子传输层制造的紫外线稳定太阳能电池在紫外线照射 24 小时后仍保留了 95.53% 的初始 PCE。在 3.76 mW/cm2 的紫外线照射下测量时，冠军器件的 PCE 和功率输出分别提高了 26.19% 和 991.21 μW/cm2。这项工作为从近紫外室内光源收集能量以应用于物联网传感器等微瓦供电电子产品开辟了新的方向。
Indoor light-energy-harvesting solar cells have long-standing history with perovskite solar cells (PSCs) recently emerging as potential candidates with high power conversion efficiencies (PCEs). However, almost all of the reported studies on indoor light-harvesting solar cells utilize white light in the visible wavelength. Low wavelength near-ultraviolet (UV) lights used under indoor environments are not given attention despite their high photon energy. In this study, perovskite solar cells have been investigated for the first time for harvesting energy from a commercially available near-UV (UV-A) indoor LED light (395–400 nm). Also called black lights, these near-UV lights are commonly used for decoration (e.g., in bars, pubs, aquariums, parties, clubs, body art studios, neon lights, and Christmas and Halloween decorations). The optimized perovskite solar cells with the n–i–p architecture using the CH3NH3PbI3 absorber were fabricated and characterized under different illumination intensities of near-UV indoor LEDs. The champion devices delivered a PCE and power output of 20.63% and 775.86 μW/cm2, respectively, when measured under UV illumination of 3.76 mW/cm2. The devices retained 84.10% of their initial PCE when aged under near-UV light for 24 h. The effects of UV exposure on the device performance have been comprehensively characterized. Furthermore, UV-stable solar cells fabricated with a modified electron transport layer retained 95.53% of its initial PCE after 24 h UV exposure. The champion devices delivered enhanced PCE and power output of 26.19% and 991.21 μW/cm2, respectively, when measured under UV illumination of 3.76 mW/cm2. This work opens up a novel direction for energy harvesting from near-UV indoor light sources for applications in microwatt-powered electronics such as internet of things sensors.
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