光电子学
能量转换效率
钙钛矿太阳能电池
聚合物太阳能电池
有机太阳能电池
太阳能电池
制作
光伏系统
异质结
纳米技术
钝化
混合太阳能电池
作者
Shanshan Zhang,Martin Stolterfoht,Ardalan Armin,Qianqian Lin,Fengshuo Zu,Jan Sobus,Hui Jin,Norbert Koch,Paul Meredith,Paul L. Burn,Dieter Neher
标识
DOI:10.1021/acsami.8b02503
摘要
Engineering the interface between the perovskite absorber and the charge-transporting layers has become an important method for improving the charge extraction and open-circuit voltage (VOC) of hybrid perovskite solar cells. Conjugated polymers are particularly suited to form the hole-transporting layer, but their hydrophobicity renders it difficult to solution-process the perovskite absorber on top. Herein, oxygen plasma treatment is introduced as a simple means to change the surface energy and work function of hydrophobic polymer interlayers for use as p-contacts in perovskite solar cells. We find that upon oxygen plasma treatment, the hydrophobic surfaces of different prototypical p-type polymers became sufficiently hydrophilic to enable subsequent perovskite junction processing. In addition, the oxygen plasma treatment also increased the ionization potential of the polymer such that it became closer to the valance band energy of the perovskite. It was also found that the oxygen plasma treatment could ...
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