Effect of a trapping molecule on the monolithic organic photorefractive materials

Hou, Zhanjia; You, Wei; Yu, Luping
November 2004
Applied Physics Letters;11/29/2004, Vol. 85 Issue 22, p5221
Academic Journal
A peculiar effect of a trapping molecule on two closely related monolithic organic photorefractive (PR) materials was described. It was found that the trapping molecule C affects the PR performances differently in two materials made from either A or B, although the two molecules have similar chemical structures. Detailed studies on the charge mobility with the time-of-flight technique and activation energies for charge transport revealed that the trapping molecule C plays the role of electron trapper in material A and bipolar trapping center for both hole and electron in material B.


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