Photocurrent measurements on aggregates in ladder-type poly(p-phenylene)
作者： A. Köhler , J. Grüner , R.H. Friend , K. Müllen , U. Scherf
DOI: 10.1016/0009-2614(95)00840-Z
关键词: Poly(p-phenylene) 、 Range (particle radiation) 、 Excitation 、 Photocurrent 、 Chemistry 、 Order of magnitude 、 Absorption (electromagnetic radiation) 、 Electron 、 Analytical chemistry 、 Photovoltaic effect 、 Molecular physics
摘要: Abstract We report measurements of the photovoltaic effect on single layer devices made with a ladder-type poly-(paraphenylene) (LPPP). Besides photocurrent in blue spectral range associated π to ∗ intra-chain absorption we observe an additional response yellow part spectrum centered at 2.25 eV. also weak feature same energy, and consider that both arise from into electron states formed over several aggregated polymer chains. The due excitation these is enhanced by two orders magnitude compared vanishes under reverse bias (i.e. ITO negative). find aggregate more sensitive oxygen exposure than absorption.
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