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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
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume6Issue:12Pages:2292-2297
Abstract

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.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1021/acs.jpclett.5b00981
WOS KeywordHIGH-PERFORMANCE ; DEVICE PERFORMANCE ; THIN-FILMS ; CRYSTALLIZATION ; HYSTERESIS ; EMERGENCE ; LIGHT ; LAYER
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
WOS IDWOS:000356758100024
Citation statistics
Cited Times:66[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/3988
Collection仿生能源与储能系统团队
Affiliation1.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
Recommended Citation
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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