Zhang Wei, Anaya Miguel, Lozano Gabriel, Calvo Mauricio E, Johnston Michael B, Míguez Hernán, Snaith Henry J
Department of Physics, University of Oxford, Clarendon Laboratory , Parks Road, Oxford OX1 3PU, United Kingdom.
Nano Lett. 2015 Mar 11;15(3):1698-702. doi: 10.1021/nl504349z. Epub 2015 Feb 13.
The performance of perovskite solar cells has been progressing over the past few years and efficiency is likely to continue to increase. However, a negative aspect for the integration of perovskite solar cells in the built environment is that the color gamut available in these materials is very limited and does not cover the green-to-blue region of the visible spectrum, which has been a big selling point for organic photovoltaics. Here, we integrate a porous photonic crystal (PC) scaffold within the photoactive layer of an opaque perovskite solar cell following a bottom-up approach employing inexpensive and scalable liquid processing techniques. The photovoltaic devices presented herein show high efficiency with tunable color across the visible spectrum. This now imbues the perovskite solar cells with highly desirable properties for cladding in the built environment and encourages design of sustainable colorful buildings and iridescent electric vehicles as future power generation sources.
在过去几年中，钙钛矿太阳能电池的性能一直在进步，且效率可能会持续提高。然而，将钙钛矿太阳能电池集成到建筑环境中的一个不利方面是，这些材料的色域非常有限，无法覆盖可见光谱的绿到蓝区域，而这一直是有机光伏的一大卖点。在此，我们采用自下而上的方法，运用廉价且可扩展的液体处理技术，在不透明钙钛矿太阳能电池的光活性层内集成了一个多孔光子晶体（PC）支架。本文展示的光伏器件具有高效率，且在可见光谱范围内颜色可调。这现在赋予了钙钛矿太阳能电池在建筑环境中用于覆层的极具吸引力的特性，并鼓励设计可持续的彩色建筑和作为未来发电来源的彩虹色电动汽车。
