Nanolayered heterojunctions of donor and acceptor conjugated polymers of interest in light emitting and photovoltaic devices: photoinduced electron transfer at polythiophene / polyquinoline interfaces

Article Abstract:

Photoluminescence (PL) spectroscopy and picosecond time-resolved PL decay dynamics were used for studying the photophysical processes that take place during the polymer/polymer interfaces. It was observed that nearly complete quenching of the steady-state photoluminescence and a factor of 160 shortening of the fluorescence lifetime of the polyquinolines occurs, which suggests that the photoinduced electron transfer from polythiophene to polyquinoline at the polyquinoline/polythiophene interfaces takes place.

Charge transfer, Photoluminescence

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Phenothiazine-phenylquinoline donor-acceptor molecules: Effects of structural isomerism on charge transfer photophysics and electroluminescence

Article Abstract:

A study of the effects of structural isomerism on the charge-transfer photophysics and electro-luminescent properties of donor-acceptor (D-A) molecules is presented with the aim to develop structure-property relationships relevant to solid-sate light-emitting devices. The results demonstrate the pronounced influence of the (D-A) molecules and the performance of solid-state light-emitting devices based on them.

Analysis, Electroluminescence, Electron transport, Molecular crystals

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Exciton regeneration dynamics in model cpolymer heterojunctions

Article Abstract:

A theoretical investigation on various semiconducting materials that exhibit photovoltaic and photoluminescent properties is presented. Focus is laid on the relaxation dynamics that occur upon photoexciton of a couple of type II donor-acceptor heterojunction systems.

Texas, Polymers, Chemical properties, Atomic properties

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