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Crystal Morphologies of Organolead Trihalide in Mesoscopic/Planar Perovskite Solar Cells
Zhou, Yuanyuan1; Vasiliev, Alexander L.1; Wu, Wenwen1; Yang, Mengjin2; Pang, Shuping3; Zhu, Kai2; Padture, Nitin P.1
2015-06-18
发表期刊JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷号6期号:12页码:2292-2297
摘要

The crystal morphology of organolead trihalide perovskite (OTP) light absorbers can have profound influence on the perovskite solar cells (PSCs) performance. Here we have used a combination of conventional transmission electron microscopy (TEM) and high-resolution TEM (HRTEM), in cross-section and plan-view, to characterize the morphologies of a solution-processed OTP (CH3NH3PbI3 or MAPbI(3)) within mesoporous TiO2 scaffolds and within capping and planar layers. Studies of TEM specimens prepared with and without the use of focused ion beam (FIB) show that FIBing is a viable method for preparing TEM specimens. HRTEM studies, in conjunction with quantitative X-ray diffraction, show that MAPbI(3) perovskite within mesoporous TiO2 scaffold has equiaxed grains of size 10-20 nm and relatively low crystallinity. In contrast, the grain size of MAPbI(3) perovskite in the capping and the planar layers can be larger than 100 nm in our PSCs, and the grains can be elongated and textured, with relatively high crystallinity. The observed differences in the performance of planar and mesoscopic-planar hybrid PSCs can be attributed in part to the striking differences in their perovskite-grain morphologies.

文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1021/acs.jpclett.5b00981
关键词[WOS]HIGH-PERFORMANCE ; DEVICE PERFORMANCE ; THIN-FILMS ; CRYSTALLIZATION ; HYSTERESIS ; EMERGENCE ; LIGHT ; LAYER
收录类别SCI
语种英语
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
WOS记录号WOS:000356758100024
引用统计
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/3988
专题仿生与固态能源系统研究组
作者单位1.Brown Univ, Sch Engn, Providence, RI 02912 USA
2.Natl Renewable Energy Lab, Chem & Mat Sci Ctr, Golden, CO 80401 USA
3.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
推荐引用方式
GB/T 7714
Zhou, Yuanyuan,Vasiliev, Alexander L.,Wu, Wenwen,et al. Crystal Morphologies of Organolead Trihalide in Mesoscopic/Planar Perovskite Solar Cells[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2015,6(12):2292-2297.
APA Zhou, Yuanyuan.,Vasiliev, Alexander L..,Wu, Wenwen.,Yang, Mengjin.,Pang, Shuping.,...&Padture, Nitin P..(2015).Crystal Morphologies of Organolead Trihalide in Mesoscopic/Planar Perovskite Solar Cells.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,6(12),2292-2297.
MLA Zhou, Yuanyuan,et al."Crystal Morphologies of Organolead Trihalide in Mesoscopic/Planar Perovskite Solar Cells".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 6.12(2015):2292-2297.
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