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- W2015396917 abstract "Electrical dark and photo conductivities, (σd and σp, of vapor deposited films of α-sexithiophene, 4,4′-distyrylstilbene, and titaniumoxophthalocyanine were investigated as function of temperature, exposure time to oxygen of variable pressure, irradiation time and intensity. Molecular oxygen increases σd and σp by orders of magnitude. Careful removal of oxygen at elevated temperatures under high vacuum and assistance of irradiation will reduce both σd and σp to almost negligible values. From the rise and decay kinetics of conductivity and from luminescence quenching it is concluded that oxygen must be complexed with the film constituting molecules in order to act as separation center for electrical charge. The complex is formed already in the dark, but more efficiently upon irradiation. The interaction with oxygen is essentially reversible but leads in a side reaction also to irreversibly oxidized photoproducts." @default.
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- W2015396917 date "1998-01-01" @default.
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- W2015396917 title "(Photo)conductivity of conjugated oligomer films: mobile charge carrier formation by oxygen" @default.
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- W2015396917 doi "https://doi.org/10.1016/s0925-3467(97)00131-6" @default.
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