Stability of (C6H5C2H4NH3)2Pb(BrxI4-x) mixed crystals

被引：10
|
作者：
Kitazawa, N [1 ]
机构：
[1] Natl Def Acad, Dept Mat Sci & Engn, Kanagawa 239, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1997年 / 36卷 / 11期
关键词：
stability; two-dimensional layered perovskite; optical properties; lead halide; intercalation; thin film;
D O I：
10.1143/JJAP.36.6876
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The stability of (C6H5C2H4NH3)(2)Pb(BrxI4-x) mixed crystals was investigated and the degradation process was discussed. A thin film of microcrystalline (RNH3)(2)PbBr4 was more stable than that of (RNH3)(2)PbI4, and the stability of (C6H5C2H4NH3)(2)Pb(BrxI4-x) mixed crystals was improved by the replacement of I with Br. X-ray diffraction and optical absorption measurements suggested that the (RNH3)(2)PbI4 crystal changed to beta-phenethylamine (C6H5C2H4NH2) coordinated PbI2 with the elapse of time. In order to determine the origin of degradation, a light irradiation-induced degradation effect was also studied. The photochemical reaction was one of the possible reasons for degradation.
引用
收藏
页码：6876 / 6879
页数：4
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