Crystallization Dynamics of Organolead Halide Perovskite by Real-Time X-ray Diffraction

被引：77

作者：

Miyadera, Tetsuhiko ^{[1
,2
]}

Shibata, Yosei ^{[1
]}

Koganezawa, Tomoyuki ^{[3
]}

Murakami, Takurou N. ^{[1
]}

Sugita, Takeshi ^{[1
]}

Tanigaki, Nobutaka ^{[1
]}

Chikamatsu, Masayuki ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan

[2] Japan Sci & Technol Agcy JST, Kawaguchi, Saitama 3320012, Japan

[3] Japan Synchrotron Radiat Res Inst JASRI, Sayo, Hyogo 6795198, Japan

来源：

NANO LETTERS | 2015年 / 15卷 / 08期

基金：

日本科学技术振兴机构;

关键词：

organolead halide perovskite; solar cell; crystallization; synchrotron-radiation X-ray diffraction; grazing incident wide-angle X-ray scattering; anomalous diffusion; HYBRID SOLAR-CELLS; EFFICIENT; PERFORMANCE; TRANSPORT; CHLORIDE; GROWTH;

D O I：

10.1021/acs.nanolett.5b02402

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We analyzed the crystallization process of the CH3NH3PbI3 perovskite by observing real-time X-ray diffraction immediately after combining a PbI, thin film with a CH3NH3I solution. A detailed analysis of the transformation kinetics demonstrated the fractal diffusion of the CH3NH3I solution into the PM, film. Moreover, the perovskite crystal was found to be initially oriented based on the PbI2 crystal orientation but to gradually transition to a random orientation. The fluctuating characteristics of the crystallization process of perovskites, such as fractal penetration and orientational transformation, should be controlled to allow the fabrication of high-quality perovsidte crystals. The characteristic reaction dynamics observed in this study should assist in establishing reproducible fabrication processes for perovsidte solar cells.

引用

页码：5630 / 5634

页数：5

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