中国物理B ›› 1997, Vol. 6 ›› Issue (2): 140-150.doi: 10.1088/1004-423X/6/2/007

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    

PHOTOCHROMISM AND ITS MECHANISM IN POLYDIACETYLENE CRYSTALS

彭景翠   

  1. Department of Applied Physics, Hunan University, Changsha 410082, China
  • 收稿日期:1995-09-04 修回日期:1996-04-10 出版日期:1997-02-20 发布日期:1997-02-20
  • 基金资助:
    Project supported by the Natural Science Foundation of Hunan Province.

PHOTOCHROMISM AND ITS MECHANISM IN POLYDIACETYLENE CRYSTALS

PENG JING-CUI (彭景翠)   

  1. Department of Applied Physics, Hunan University, Changsha 410082, China
  • Received:1995-09-04 Revised:1996-04-10 Online:1997-02-20 Published:1997-02-20
  • Supported by:
    Project supported by the Natural Science Foundation of Hunan Province.

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摘要： Based on summarizing and analyzing experimental facts of photochromism in polydiacetylene crystals, a theoretical model describing the photochromic process was presented. It is considered that the photochromism is the result of phase structural conversion during photoexcitation excitonic relaxation process, and its dependence on the energy and density of incident photons can be explained correctly. The micro-mechanism of photochromism is discussed in detail.

Abstract: Based on summarizing and analyzing experimental facts of photochromism in polydiacetylene crystals, a theoretical model describing the photochromic process was presented. It is considered that the photochromism is the result of phase structural conversion during photoexcitation excitonic relaxation process, and its dependence on the energy and density of incident photons can be explained correctly. The micro-mechanism of photochromism is discussed in detail.

中图分类号:  (Optical properties of bulk materials and thin films)

  • 78.20.-e
71.35.-y (Excitons and related phenomena) 78.30.Ly (Disordered solids)