Cui Jin, Meng Fanping, Zhang Hua, Cao Kun, Yuan Huailiang, Cheng Yibing, Huang Feng, Wang Mingkui
Michael Grätzel Centre for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology , Wuhan, 430074 Hubei, People's Republic of China.
ACS Appl Mater Interfaces. 2014 Dec 24;6(24):22862-70. doi: 10.1021/am507108u. Epub 2014 Dec 4.
Herein we report an investigation of a CH3NH3PbI3 planar solar cell, showing significant power conversion efficiency (PCE) improvement from 4.88% to 6.13% by introducing a homogeneous and uniform NiO blocking interlayer fabricated with the reactive magnetron sputtering method. The sputtered NiO layer exhibits enhanced crystallization, high transmittance, and uniform surface morphology as well as a preferred in-plane orientation of the (200) plane. The PCE of the sputtered-NiO-based perovskite p-i-n planar solar cell can be further promoted to 9.83% when a homogeneous and dense perovskite layer is formed with solvent-engineering technology, showing an impressive open circuit voltage of 1.10 V. This is about 33% higher than that of devices using the conventional spray pyrolysis of NiO onto a transparent conducting glass. These results highlight the importance of a morphology- and crystallization-compatible interlayer toward a high-performance inverted perovskite planar solar cell.
在此，我们报告了对一种CH3NH3PbI3平面太阳能电池的研究，通过引入采用反应磁控溅射法制备的均匀且一致的NiO阻挡层，其功率转换效率（PCE）从4.88%显著提高到了6.13%。溅射的NiO层表现出增强的结晶性、高透射率、均匀的表面形貌以及（200）面的择优面内取向。当采用溶剂工程技术形成均匀且致密的钙钛矿层时，基于溅射NiO的钙钛矿p-i-n平面太阳能电池的PCE可进一步提高到9.83%，展现出令人印象深刻的1.10 V开路电压。这比在透明导电玻璃上使用传统喷雾热解法制备NiO的器件高出约33%。这些结果突出了形态和结晶兼容的中间层对于高性能倒置钙钛矿平面太阳能电池的重要性。
