摘要
采用表面光电压和电场诱导表面光电压技术研究了三聚噻吩在外电场作用下的电子运动行为 .结合三聚噻吩的 UV光谱、极化子概念以及前线轨道理论 ,指认了三聚噻吩能级跃迁性质 ,即 3 80 nm附近的峰为带 -带跃迁峰 ,4 47,4 65和 60 0 nm附近的峰是与单极化子有关的电子跃迁 ;而在 770和 90 0
The behavior of the electron jumping of α terthiophene under effect of electrical field has been investigated by means of SPS and EFISPS. Combining the result of UV Vis spectra, the band band transition response peak(HOMO LUMO) has been assigned and non band band transition response peaks have also been assigned according to the conception of polaron. For the SPS and EFISPS of α 3T, near 380 nm, it is band band transition absorption. Near 447, 465 and 600 nm, three different types of electron transitions which are related to energy levels of mono polaron occured. Near 770 and 900 nm, other two types of electron transition which related to bipolaron occured.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第6期1010-1012,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金 !(批准号 :5 9870 0 9)
国家攀登计划资助课题
关键词
三聚噻吩
极化子
表面光电压谱
电场诱导表面光电压
电子运动
电子跃迁
Terthiophene(α 3T)
Polaron
Surface photovoltage spectroscopy(SPS)
Electric field induced surface photovoltage spectroscopy(EFISPS)
