Abstract We have proven theoretically that there are sublinear, linear and superlinear relations between the response rates and total incident intensity for different cases of traps in photorefractive polymer materials. These relations were observed in inorganic photorefractive crystals many years ago. Also, the steady-state space-charge field is a function of the total incident intensity, which has also been found in inorganic photorefractive crystals. We have measured the relations of the steady-state diffraction efficiency and the response rate with respect to the total incident intensity in the photorefractive composite consisting of the polymer (N-vinylcarbazole) (PVK) doped with 4,4'-n-pentylcyanobiphenyl (5CB) and C60. The results obtained show that the composite belongs to the case of low trap density.
Received: 08 March 2001
Revised: 28 August 2001
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 69878006), and the Foundation of Harbin Institute of Technology, China (Grant No. 991190-014).
Cite this article:
Yuan Bao-Hong (袁保红), Sun Xiu-Dong (孙秀冬), Jiang Yong-Yuan (姜永远), Zhou Zhong-Xiang (周忠祥), Yao Feng-Feng (姚凤凤), Li Yan (李焱) Influence of intensity on the steady and transient state space-charge fields in photorefractive polymers 2002 Chinese Physics 11 21
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
