简介：Theinvestigationsofsurfacephotovoltagespectraareperformedonthinfilmsofpoly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylenevinylene]inordertodetermineitsphotoelectricproperties.Itisfoundthatalocalizedsubgapelectronictransitioncausesapolarityoppositeband-to-bandelectronictransition(π-π*).Thistransitionresultsinanelectronicleveltransitionfromthevalencebandtoalocalstateintheconductionband.
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