氯化物
材料科学
卤化物
薄膜
铅(地质)
化学工程
氯化铅
钙钛矿(结构)
纳米技术
无机化学
化学
地质学
地貌学
工程类
冶金
作者
Selvi B Williams,Fan Zuo,Chu‐Chen Chueh,Chien‐Yi Liao,Po‐Wei Liang,Alex K.‐Y. Jen
出处
期刊:ACS Nano
[American Chemical Society]
日期:2014-10-09
卷期号:8 (10): 10640-10654
被引量:351
摘要
A comprehensive morphological study was used to elucidate chloride's role in CH(3)NH(3)PbI(3-x)Cl(x) film evolution on a conducting polymer, PEDOT:PSS. Complex ion equilibria and aggregation in solution, as well as the role they play in nucleation, are found to ultimately be responsible for the unique morphological diversity observed in perovskite films grown in the presence of the chloride ion. An intermediate phase that is generated upon deposition and initial annealing templates continued self-assembly in the case of CH(3)NH(3)PbI(3-x)Cl(x). In the absence of chloride, the film growth of CH(3)NH(3)PbI(3) is directed by substrate interfacial energy. By employing the through-plane TEM analysis, we gain detailed insight into the unique crystallographic textures, grain structures, and elemental distributions across the breadth of films grown from precursor solutions with different chemistries. The lattice coherence seen in morphologies generated under the influence of chloride provides a physical rational for the enhancement in carrier diffusion length and lifetime.
科研通智能强力驱动
Strongly Powered by AbleSci AI