Zhou Yuanyuan, Game Onkar S, Pang Shuping, Padture Nitin P
School of Engineering, Brown University , 184 Hope Street, Providence, Rhode Island 02912, United States.
Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , 189 Songling Road, Qingdao 266101, P. R. China.
J Phys Chem Lett. 2015 Dec 3;6(23):4827-39. doi: 10.1021/acs.jpclett.5b01843. Epub 2015 Nov 23.
The use of organometal trihalide perovskites (OTPs) in perovskite solar cells (PSCs) is revolutionizing the field of photovoltaics, which is being led by advances in solution processing of OTP thin films. First, we look at fundamental phenomena pertaining to nucleation/growth, coarsening, and microstructural evolution involved in the solution-processing of OTP thin films for PSCs from a materials-science perspective. Established scientific principles that govern some of these phenomena are invoked in the context of specific literature examples of solution-processed OTP thin films. Second, the nature and the unique characteristics of OTP thin-film microstructures themselves are discussed from a materials-science perspective. Finally, we discuss the challenges and opportunities in the characterization of OTP thin films for not only gaining a deep understanding of defects and microstructures but also elucidating classical and nonclassical phenomena pertaining to nucleation/growth, coarsening, and microstructural evolution in these films. The overall goal is to have deterministic control over the solution-processing of tailored OTP thin films with desired morphologies and microstructures.
有机金属三卤化物钙钛矿（OTP）在钙钛矿太阳能电池（PSC）中的应用正在彻底改变光伏领域，这一领域正由OTP薄膜的溶液处理技术进步引领。首先，我们从材料科学的角度审视与用于PSC的OTP薄膜溶液处理过程中涉及的成核/生长、粗化和微观结构演变相关的基本现象。在溶液处理的OTP薄膜的具体文献实例背景下，援引了支配其中一些现象的既定科学原理。其次，从材料科学的角度讨论了OTP薄膜微观结构本身的性质和独特特征。最后，我们讨论了表征OTP薄膜的挑战和机遇，这不仅有助于深入理解缺陷和微观结构，还能阐明与这些薄膜中的成核/生长、粗化和微观结构演变相关的经典和非经典现象。总体目标是对具有所需形态和微观结构的定制OTP薄膜的溶液处理进行确定性控制。
