Low temperature processed, high-performance and stable NiOx based inverted planar perovskite solar cells via a poly(2-ethyl-2-oxazoline) nanodots cathode electron-extraction layer
Low temperature processed, high-performance and stable NiOx based inverted planar perovskite solar cells via a poly(2-ethyl-2-oxazoline) nanodots cathode electron-extraction layer
复制标题
通过聚（2-乙基-2-恶唑啉）纳米点阴极电子提取层低温处理、高性能且稳定的 NiOx 基倒置平面钙钛矿太阳能电池
DOI：
10.1016/j.mtener.2016.11.001
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发表时间：
2016-10-01
影响因子：
9.3
通讯作者：
He, Zhu-bing
中科院分区：
文献类型：
--
作者：
Chen, Wei;Zhang, Gui-ning;He, Zhu-bing
高转换效率和稳定性是当前钙钛矿太阳能电池（PSC）研究的重要主题，这决定了其商业化的未来。根据PSC的固有特性，界面工程在提高PSC的转换效率和稳定性方面起着关键作用。在这项工作中，我们开发了一个强大的接口工程的“倒置”平面异质结PSC的低温和faCELe溶液处理的PEOz纳米点膜。在ITO/NiOx /Peroxide/PCBM/PEOz/Ag的配置中，PEOz纳米点膜充当电子提取层，NiOx纳米结构化膜充当空穴传输层。这样的设计导致1.07V的开路电压（V-oc）、21.93mA/cm（2）的短路电流（J（sc））和77.9%的填充因子（FF），对应于18.28%的最大PCE，与没有PEOz阴极电子提取层的相同结构器件的11.98%的转换效率形成对比。此外，两层的组合导致高度稳定的平面PSC，因此具有高耐久性。进行并收集了一系列实验和表征以支持该发现。我们的研究结果为将来PSC的规模化生产提供了科学依据。(C)2016爱思唯尔有限公司版权所有。
High conversion efficiency and stability are above all important topics in the current study of perovskite solar cells (PSCs), which determine the future of their commercialization. According to the intrinsic characters of PSCs, interface engineering plays a key role in enhancing both conversion efficiency and stability of PSCs. In this work, we developed a robust interface engineering for "inverted" planar heterojunction PSCs of low temperature and faCELe solution processed PEOz nanodots film. The PEOz nanodots film acts as electron extraction layer and NiOx nanostructured film acts as a hole transport layer in a configuration of ITO/NiOx /Perovskite/PCBM/PEOz/Ag. Such design results in an open circuit voltage (V-oc) of 1.07 V, a short-circuit current (J(sc)) of 21.93 mA/cm(2), and a fill factor (FF) of 77.9%, corresponding to a maximum PCE of 18.28%, in contrast to a conversion efficiency of 11.98% for the same structure devices without PEOz cathode electron-extraction layer. Moreover, the combination of the two layers leads to highly stable planar PSCs and hence high durability. A series of experiments and characterizations were performed and collected to support the discovery. Our results provide a scientific basis for the scale-up production of future PSCs. (C) 2016 Elsevier Ltd. All rights reserved.