Efficient Inverted Planar Perovskite Solar Cells Using Ultraviolet/Ozone‐Treated NiOx as the Hole Transport Layer,Solar RRL

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Efficient Inverted Planar Perovskite Solar Cells Using Ultraviolet/Ozone‐Treated NiOx as the Hole Transport Layer
Solar RRL ( IF 6.0 ) Pub Date : 2019-03-28 , DOI: 10.1002/solr.201900045
Tun Wang ₁ , Dong Ding ₁ , Hao Zheng ₁ , Xin Wang ₁ , Jiayuan Wang ₁ , Hong Liu ₁ , Wenzhong Shen ₁

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Nickel oxide (NiO_x) has exhibited great potential as a hole transport layer (HTL) for fabricating efficient and stable perovskite solar cells (PSCs). However, it has been greatly limited by its fabrication and manipulation process. In this work, a simple processing method on an ultrathin electrochemical mesoporous NiO_x film manipulated by controllable ultraviolet/ozone (UVO) treatmentis employed; the duration of UVO treatment on the NiO_x film significantly affects the photovoltaic properties of the PSCs. When the exposure duration increases, the wettability, electrical conductivity, nonstoichiometry, and valence band energy of the NiO_x film are improved with varying degrees. Besides, the perovskite grain size, recombination resistance at the perovskite/NiO_x interface, and build‐in potential of the device also increase, resulting in higher short‐circuit current density (J_SC) and open‐circuit voltage (V_OC). Combining these factors together, an optimal exposure time of UVO treatment on the NiO_x film has been achieved at 5 min, which results in a significantly high performance with an efficiency of 19.67%, large V_OC (>1.1 V), and J_SC (>23 mA cm⁻²). Furthermore, the experimental results are coincide well with simulation results on the different corresponding subjects. Hopefully, this work could facilitate material manipulation toward scalable, high efficiency, and stable solar cells.

中文翻译：

使用紫外线/臭氧处理的NiOx作为空穴传输层的高效倒置平面钙钛矿太阳能电池

氧化镍（NiO _x）具有作为空穴传输层（HTL）的巨大潜力，可用于制造高效，稳定的钙钛矿太阳能电池（PSC）。但是，它受到其制造和操纵过程的极大限制。在这项工作中，采用通过可控的紫外线/臭氧（UVO）处理操作的超薄电化学中孔NiO _x膜的简单处理方法；NiO _x膜上UVO处理的持续时间会显着影响PSC的光伏性能。当暴露持续时间增加时，NiO _x的润湿性，电导率，非化学计量和价带能漆膜有不同程度的改善。此外，钙钛矿的晶粒尺寸，钙钛矿/ NiO _x界面处的复合电阻以及器件的内置电势也会增加，从而导致更高的短路电流密度（J _SC）和开路电压（V _OC）。综合考虑这些因素，可以在5分钟时达到在NiO _x膜上进行UVO处理的最佳曝光时间，从而获得显着的高性能，效率高达19.67％，具有较大的V _OC（> 1.1 V）和J _SC（> 23 mA厘米^-2）。此外，实验结果与不同相应主题的模拟结果吻合得很好。希望这项工作可以促进对可扩展，高效和稳定的太阳能电池的材料操纵。

更新日期：2019-03-28

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