Effect of crystalline microstructure on the photophysical performance of polymer/perylene composite films
Feng Wei (封伟)a, Xu You-Long (徐友龙)b, Yi Wen-Hui (易文辉)b, Zhou Feng (周峰)a, Wang Xiao-Gong (王晓工)a, Yoshino Katsumi (吉野勝美)c
a Institute of Polymer Science and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China; b School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China; c Department of Electronic Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka 565-0871, Japan
Abstract To obtain high carrier mobility, better charge injection capability, and high photovoltaic device conversion efficiency, a powerful strategy is to improve the morphology of the polymer/dye composite films. Conjugated conducting polymer (CP) thin films doped with perylene derivative (PV) of various concentrations were prepared by spin-casting method, and their morphology and photovoltaic characteristics were examined. The change in morphology and molecular reorientation occurring in CP-PV composite films upon annealing at different temperatures was investigated using scanning electron microscopy, x-ray diffraction, Fourier transform infrared and UV-vis absorption. By changing the annealing temperature, PV microcrystallines of 8－10μm in size lying parallel to the substrate surface can be obtained. Annealing effect improved the photovoltaic performance of ITO/CP-PV/Al Schottky-type solar cells, which can be attributed to the formation of an electron conducting PV crystal network. Preliminary studies indicate that the morphological structure in CP-PV composite films has an important influence to their photovoltaic properties.
Received: 22 November 2002
Revised: 20 December 2002
Accepted manuscript online:
Fund: Project supported by the Foundation for Overseas Returnee of Chinese Education Ministry (Grant No 2001345) and the Postdoctoral Science Foundation of China (Grant No 2002032055).
Cite this article:
Feng Wei (封伟), Xu You-Long (徐友龙), Yi Wen-Hui (易文辉), Zhou Feng (周峰), Wang Xiao-Gong (王晓工), Yoshino Katsumi (吉野勝美) Effect of crystalline microstructure on the photophysical performance of polymer/perylene composite films 2003 Chinese Physics 12 426
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.
