通讯员马坤 记者刘万生 9月29日，大连理工大学精细化工国家重点实验室孙立成教授应邀在2015年9月出版的《自然化学》期刊以“ 钙钛矿太阳能电池: 晶体铰链”为题发表文章，对钙钛矿太阳能电池结构组成、工作原理、近几年的研究进展及目前面临的挑战(如何提升电池的稳定性等)进行了深度解读和剖析，为钙钛矿太阳能电池研究的未来发展指明方向。

能源问题是保障人类社会可持续发展的全球性问题，作为可持续利用的清洁能源，太阳能的开发利用越来越得到世界各国政府的重视与支持。为了从源头创新、抢占高科技领域的制高点及基于国家能源安全和战略考虑，近年来西方发达国家以政府预算方式投入大量资金研究开发新型低成本太阳能电池。钙钛矿太阳能电池的出现让人们看到了希望，它犹如一匹黑马，在短短的三年时间里其光电转换效率迅速攀升到20%。这类太阳能电池结构简单，主要由碘甲胺与碘化铅构成的钙钛矿晶体作为吸光材料，两侧辅助以电子传输层和空穴传输层组成。钙钛矿太阳能电池制备方便，而且成本低廉，是目前全世界范围内最受关注的科研领域之一。

Solid-state perovskite solar cells have recently emerged and have already reached efficiencies of 20%. Now, a simple solution-processing step that crosslinks neighbouring perovskite grain surfaces has been found to increase their stability, an important issue for future potential commercialization.

The emergence of perovskite solar cells undoubtedly represents one of the big scientific developments of the past few years. The highest certified solar-to-electrical power conversion efficiency of solid-state perovskite solar cells has rapidly risen to over 20% under 1 Sun (100 mW cm^-2) illumination. Their high efficiency, together with their easier preparation procedures and lower cost of components, has made perovskite solar cells very competitive over other types of solar cell.