Copolymerization of EDOT with pyrrole on TiO2 semiconductor films by one-step reaction, structure-dependent electronic properties, and charge conduction models of the composite films.
作者： Xun Ma , Xiuyuan Ni
DOI: 10.1021/LA404773R
关键词: Ultraviolet photoelectron spectroscopy 、 X-ray photoelectron spectroscopy 、 Infrared spectroscopy 、 Copolymer 、 Heterojunction 、 Polymerization 、 Photochemistry 、 Materials science 、 Substrate (electronics) 、 Semiconductor
摘要: We used the photoexcited TiO2 films to initiate copolymerization of 3,4-ethylenedioxythiophene with pyrrole, aiming develop an organic/inorganic heterojunction. Specular reflection infrared spectroscopy analysis was monitor process polymerization and indicated that copolymers directly grew on substrate. Dissecting ultraviolet photoelectron revealed evolution valence-band electronic structures. Moreover, resulting copolymer/TiO2 heterojunctions were investigated using electrochemical impedence X-ray spectroscopy. The Al/poly(3,4-ethylenedioxythiophene-co-pyrrole)/TiO2/ITO heterojunction device prepared from hybrid film exhibited a conspicuous rectification. also explored respect conduction models.
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