The cover image, by Xinyue Zhang et al., is based on the Research Article Large‐area flexible, transparent, and highly luminescent films containing lanthanide (III) complex‐doped ionic liquids for efficiency enhancement of silicon‐based heterojunction solar cell, DOI: 10.1002/pip.2915. Design Credit: Huanrong Li and Xinyue Zhang.

中文翻译：

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封面图片，第25卷，第12期

Zhang Xinyue Zhang等人的封面图片基于研究论文，其中包含掺有镧系元素（III）的离子液体的大面积柔性，透明和高发光膜，用于提高硅基异质结太阳能电池（DOI）的效率：10.1002 /点2915。设计荣誉：李焕荣和张欣悦。