Showing papers on "Pentacene published in 1973"
TL;DR: In this paper, the electric field induced shift of the electronic origin of the lowest B 2u singlet state of tetracene and pentacene in p -terphenyl at 1.8°K has been measured.
48 citations
TL;DR: In this paper, the authors measured the recombination radiation spectrum and its transient behavior on a pentacene doped anthracene crystal and found that the spectrum was more sensitive to chemical or physical impurities than optically sensitized fluorescence spectrum.
Abstract: The recombination radiation spectrum and its transient behavior were measured on a pentacene doped anthracene crystal. The recombination radiation spectrum was more sensitive to chemical or physical impurities than optically sensitized fluorescence spectrum. The intensity of both anthracene and pentacene emission was approximately proportional to the current. Anthracene or pentacene emission was found to consist of three components differing by their decay times; component 1 (decay time <10−5s), components 2,3 (decay times in the millisecond region, τ2<τ3). The component 1 was due to singlet excitons generated directly by carrier recombination. The component 2, the decay time of which was 2–3 ms, was due to triplet exciton annihilation, for its decay time was not affected by a reverse bias voltage and was equal to one half of the observed phosphorescence lifetime. The component 3, which was removed by a reverse bias voltage, was due to detrapped-trapped carrier recombination. Pentacene chemical impurity w...
5 citations