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Acta Phys. Sin. (Overseas Edition), 1997, Vol. 6(2): 140-150    DOI: 10.1088/1004-423X/6/2/007
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev  

PHOTOCHROMISM AND ITS MECHANISM IN POLYDIACETYLENE CRYSTALS

PENG JING-CUI
Department of Applied Physics, Hunan University, Changsha 410082, China
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.
Received:  04 September 1995      Revised:  10 April 1996      Published:  20 February 1997
PACS:  78.20.-e (Optical properties of bulk materials and thin films)  
  71.35.-y (Excitons and related phenomena)  
  78.30.Ly (Disordered solids)  
Fund: Project supported by the Natural Science Foundation of Hunan Province.

Cite this article: 

PENG JING-CUI PHOTOCHROMISM AND ITS MECHANISM IN POLYDIACETYLENE CRYSTALS 1997 Acta Phys. Sin. (Overseas Edition) 6 140

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