Perovskite photovoltachromic cells for building integration
Perovskite photovoltachromic cells for building integration
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DOI：
10.1039/c5ee00896d
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发表时间：
2015-01-01
影响因子：
32.5
通讯作者：
Gigli, Giuseppe
中科院分区：
文献类型：
--
作者：
Cannavale, Alessandro;Eperon, Giles E.;Gigli, Giuseppe
光伏变色器件结合了联合收割机的光伏和电致变色行为，以实现可调节的透明玻璃，其中光伏组件提供电力以驱动着色。这种独立的自供电装置对于集成到建筑物和车辆的窗户和表面中具有商业利益。在这里，我们首次报道了一种具有自适应透明度的钙钛矿基光伏变色器件。这种多功能装置能够通过太阳能转换产生电力，并且当用太阳光照射时，能够经历从中性色半透明到深蓝色的变色转变，而无需任何额外的外部偏压。半透明钙钛矿光伏电池和固态电致变色电池的组合使得全固态光伏变色器件具有26%（或16%）的平均可见光透射率和3.7%（或5.5%）的最大光功率转换效率。在激活自着色后，平均可见光透射率下降到8.4%（或5.5%）。这些结果代表了朝着光伏变色建筑围护结构商业化迈出的重要一步。
Photovoltachromic devices combine photovoltaic and electrochromic behaviours to enable adjustable transparency glazing, where the photovoltaic component supplies the power to drive the coloration. Such stand-alone, self-powered devices are of commercial interest for integration into windows and surfaces of buildings and vehicles. Here, we report for the first time a perovskite-based photovoltachromic device with self-adaptive transparency. This multifunctional device is capable of producing electrical power by solar energy conversion as well as undergoing a chromic transition from neutral-color semi-transparent to dark blue-tinted when irradiated with solar light, without any additional external bias. The combination of semi-transparent perovskite photovoltaic and solid-state electrochromic cells enables fully solid-state photovoltachromic devices with 26% (or 16%) average visible transmittance and 3.7% (or 5.5%) maximum light power conversion efficiency. Upon activating the self-tinting, the average visible transmittance drops to 8.4% (or 5.5%). These results represent a significant step towards the commercialization of photovoltachromic building envelopes.