摘要
制备了PVK/ZnS有机无机复合的光电导型器件 ,器件结构分别为Glass/ITO/PVK/Al;Glass/ITO/ZnS/Al;Glass/ITO/ZnS/PVK/Al。通过研究此复合器件在外加电场作用下的稳态光电导激发谱 ,得到了基本光激发过程。把PVK/ZnS的吸收谱和器件的光电导谱进行比较 ,知道虽然两者的吸收对器件光电流都有贡献 ,但有效部分在PVK和ZnS的界面处。
Photoconductive devices with organic (polyvinylcarbazole-PVK)/inorganic (zinc-sulfide-ZnS) thin-film heteropairing were fabricated. In external field, the excitation profile of the steady-state photoconductivity and the primary photoexcitation process of hybrid devices were presented and discussed. Comparison of photoconductivity of the devices and absorption spectra of PVK and ZnS implied that both layers absorption contributes to the photocurrent, but the effective part is at the interface of PVK and ZnS. The dependence of maximum photocurrent on the applied voltage and the dark and illuminated current spectra indicates the ultrafast charge transfer at the interface.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2004年第8期918-921,共4页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金 (90 30 1 0 0 4 )
高等学校博士学科专项科研基金(2 0 0 2 0 0 0 4 0 0 4 )
北京市自然科学基金 (2 0 52 0 1 5)
北京交通大学论文基金
"973"项目(2 0 03CB31 4 70 7)资助