Abstract
Researchers working in the field of photovoltaic are exploring novel materials for the efficient solar energy conversion. The prime objective of the discovery of every novel photovoltaic material is to achieve more energy yield with easy fabrication process and less production cost features. Perovskite solar cells (PSCs) delivering the highest efficiency in the passing years with different stoichiometry and fabrication modification has made this technology a potent candidate for future energy conversion materials. Till now, many studies have shown that the quality of active layer morphology, to a great extent, determines the performance of PSCs. The current and potential techniques of solvent engineering for good active layer morphology are mainly debated using primary solvent, co-solvent (Lewis acid-base adduct approach) and solvent additives. In this review, the dynamics of numerously reported solvents on the morphological characteristics of PSCs active layer are discussed in detail. The intention is to get a clear understanding of solvent engineering induced modifications on active layer morphology in PSC devices via different crystallization routes. At last, an attempt is made to draw a framework based on different solvent coordination properties to make it easy for screening the potent solvent contender for desired PSCs precursor for a better and feasible device.
摘要
光伏领域的研究者们在不断探索可以用于高效太阳能转换的新材料. 研究每种新型光伏材料的主要目的是通过简单的制造工艺和 较低的生产成本来实现更高的能量产出. 新兴的钙钛矿材料也在竞争行列之中. 通过不同的化学计量调控和工艺改进, 钙钛矿太阳电池在 过去的几年中实现了最高的光电转换效率, 这一技术已经成为未来能量转换材料的有力候选者. 到目前为止, 许多研究表明活性层的薄膜 质量在很大程度上决定了钙钛矿太阳电池的光电性能. 当前和潜在的用于制备良好活性层形貌的溶剂工程技术大体上是使用主要溶剂、 共溶剂(路易斯酸-碱加合方法)和溶剂添加剂来实现. 在这篇综述中, 我们详细讨论了多种已报道的溶剂工程动力学对钙钛矿太阳电池活 性层形态特征的影响. 目的是通过不同的结晶过程得到一个关于溶剂工程如何诱导钙钛矿太阳电池活性层形貌的清晰的认知. 最后, 我们 基于不同溶剂的配位性质绘制了一个基本框架, 便于筛选可用来制备钙钛矿前驱体的有效溶剂, 以获得性能更好和可行性更高的光伏器件.
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Acknowledgements
This work was supported by the National Key Research and Development Program of China (2016YFA0202400), the 111 project (B16016), and the National Natural Science Foundation of China (51572080, 51702096, and U1705256).
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Zulqarnain Arain obtained his BSc degree from QUEST University, Pakistan in 2014. He is a Master student of the North China Electric Power University under the supervision of Prof. Yong Ding and Prof. Songyuan Dai. He is also a faculty member of Energy System Engineering Dept. SIBA University, Pakistan and currently on study Leave. His research interests mainly focus on perovskite solar cells.
Yong Ding is a lecturer in Beijing Key Lab of Novel Thin Film Solar Cells, North China Electric Power University. He received his PhD degree in physical chemistry from Hefei Institutes of Physical Science, Chinese Academy of Sciences in 2011. His research interest is novel-type solar cells, including dye-sensitized solar cells and perovskite solar cells.
Songyuan Dai is a professor and Dean of the School of Renewable Energy, North China Electric Power University. He obtained his BSc degree in physics from Anhui Normal University in 1987, and MSc and PhD degrees in plasma physics from the Institute of Plasma Physics, Chinese Academy of Sciences in 1991 and 2001, respectively. His research interests mainly focus on the next-generation solar cells including dye-sensitized solar cells, quantum dot solar cells, perovskite solar cells, etc.
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Arain, Z., Liu, C., Yang, Y. et al. Elucidating the dynamics of solvent engineering for perovskite solar cells. Sci. China Mater. 62, 161–172 (2019). https://doi.org/10.1007/s40843-018-9336-1
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DOI: https://doi.org/10.1007/s40843-018-9336-1