Mesoporous perovskite solar cells and the role of nanoscale compact layers for remarkable all-round high efficiency under both indoor and outdoor illumination
Mesoporous perovskite solar cells and the role of nanoscale compact layers for remarkable all-round high efficiency under both indoor and outdoor illumination
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DOI：
10.1016/j.nanoen.2016.10.030
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发表时间：
2016-12-01
期刊：
影响因子：
17.6
通讯作者：
Brown, T. M.
中科院分区：
文献类型：
--
作者：
Di Giacomo, F.;Zardetto, V.;Brown, T. M.
如今，多晶硅和单晶硅在户外应用的光伏（PV）市场中占据主导地位。尽管如此，人们对光伏发电的需求越来越大，从建筑集成到便携式电子产品，再到室内，为智能传感器、物联网和家庭供电。在后一种环境中，其他光伏技术，如非晶硅和染料敏化太阳能电池，迄今为止已成为广泛的光捕获选择。在这里，我们表明，我们开发的钙钛矿太阳能电池（PSC），在其介观形式下，结合低温致密和介孔TiO 2层，在室外和室内照明条件下都具有高功率转换效率（PCE）的出色组合：即PCE=15.9%（介观形式的低温处理PSC的最高值）（STC：1000 W/m（2），AM 1.5光谱，25 ℃），在室内照明下（在紧凑型荧光灯下，最大功率密度MPD在200 lx下为15.4 μ W cm（-2），在400 lx下为32.6 μ W cm（-2）），PCE为24% - 25.4%。我们的研究结果表明，该技术具有卓越的全面性能，而且通过低成本加工制造。这些最先进的高价值是通过原子层沉积（ALD）沉积的高质量薄TiO 2层的开发实现的。此外，我们的调查突出了更严格的阻挡行为要求的紧凑层在低水平的光照明下相比，当设备必须在STC下操作。最后，所使用的架构和工艺都是在低温（T < 150摄氏度）下进行的，这使我们能够成功地将设计转移到塑料基板上。
Today poly and mono-crystalline silicon dominate the photovoltaic (PV) markets for outdoor applications. Nevertheless, there is a growing requirement for PV to be deployed in a wide variety of conditions from building-integrated, to portable electronics, to indoors for powering smart sensors, internet of things and homes. In this latter environment, other PV technologies such as amorphous silicon and dye sensitized solar cells have been the wide-spread choice to date for light harvesting. Here, we show that the perovskite solar cells (PSCs) we developed, in their mesoscopic form, incorporating both low temperature compact and mesoporous TiO2 layers, possess an outstanding combination of high power conversion efficiency (PCE) under both outdoor and indoor illumination conditions: i.e. PCE=15.9% (the highest for low temperature processed PSC in the mesoscopic form) under Standard Test Conditions (STC:1000 W/m(2) with AM 1.5 Spectrum, 25 degrees C), and PCE=24% - 25.4% under indoor lighting (with a Maximum Power Density MPD=15.4 mu W cm(-2) at 200 lx and 32.6 mu W cm(-2) at 400 lx under compact fluorescent lamp). Our results demonstrate this technology to be exceptional for all-round performance, furthermore being manufactured via low-cost processing. These state-of-the-art high values were enabled by the development of high quality thin TiO2 layers deposited by atomic layer deposition (ALD). Furthermore, our investigation highlights the more stringent blocking behavior requirements of the compact layers under low-level light illumination compared to when the device has to operate under STC. Finally, the architecture and processes used were all carried out at low temperatures (T < 150 degrees C) which enabled us to successfully transfer the design to plastic substrates.