Stability of (C_6H_5C_2H_4NH_3)_2Pb(Br_xI_<4-x>) Mixed Crystals

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概要

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• The stability of (C_6H_5C_2H_4NH_3)_2Pb(Br_xI_<4-x>) mixed crystals was investigated and the degradation process was discussed. A thin film of microcrystalline (RNH_3)_2PbBr_4 was more stable than that of (RNH_3)_2PbI_4, and the stability of (C_6H_5C_2H_4NH_3)_2Pb(Br_xI_<4-x>) mixed crystals was improved by the replacement of I with Br. X-ray diffraction and optical absorption measurements suggested that the (RNH_3)_2PbI_4 crystal changed to β-phenethylamine (C_6H_5C_2H_4NH_2) coordinated PbI_2 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.

• 社団法人応用物理学会の論文
• 1997-11-15

著者

• KITAZAWA Nobuaki

  Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, To

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