Title :
Electrochromic mechanism study of corona poled electro-optic polymer films
Author :
Gangjin, Chen ; Xia Zhongfu ; Yewen, Zhang
Author_Institution :
Zhejiang Normal Univ., China
Abstract :
In the study of electro-optic polymers with nonlinear optical activity, the phenomena of electrochromic shifts and intensity decreases of charge-transfer absorption bands in the polymer film after corona poling have been used for real-time monitoring of the corona-poling process and poling stability. In this paper, the structure changes of the chromophore dipoles doped or chemically attached to polymer macromolecules before and after poling were investigated by measuring UV-VIS and IR spectra. The electrochromic mechanism was discussed. The results indicated that the main reason for the electrochromic shifts was the deformation of the conjugate π system in the chromophore dipole. The solvent used during specimen preparation affects the material structure
Keywords :
corona; dielectric polarisation; electrets; electrochromism; infrared spectra; nonlinear optics; optical polymers; polymer blends; polymer films; polymer structure; spectral line shift; ultraviolet spectra; visible spectra; IR spectra; PMMA; UV-VIS spectra; charge-transfer absorption band intensity decrease; chromophore dipoles; conjugate π system deformation; corona poled electro-optic polymer films; corona poling; corona-poling process; electrochromic mechanism; electrochromic shifts; molecular dipole polymer electret; nonlinear optical activity; poling stability; real-time monitoring; Chemicals; Corona; Electrochromism; Electromagnetic wave absorption; Monitoring; Nonlinear optics; Optical films; Optical polymers; Polymer films; Stability;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
0-7803-5459-1
DOI :
10.1109/ICPADM.2000.876181
