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Enhancing spectral response of organic photodetectors through surface modification of metal oxide electrodes | IEEE Conference Publication | IEEE Xplore

Enhancing spectral response of organic photodetectors through surface modification of metal oxide electrodes


Abstract:

For bulk heterojunction (BHJ) organic photodetectors (OPDs), it was found that the direct contact between the deposited electrode and the photoactive organic layer leads ...Show More

Abstract:

For bulk heterojunction (BHJ) organic photodetectors (OPDs), it was found that the direct contact between the deposited electrode and the photoactive organic layer leads to severe quenching of excitons. Improved device architectures hence involve the incorporation of charge transport layers, such as metal oxide layers, between electrodes and the active layer, allowing substantially higher internal efficiencies to be achieved. We show here that through appropriate surface modification of the underlying metal oxide layer, i.e. through hydrogen annealing, a novel light trapping scheme for the photoactive layer deposited on top of the metal oxide layer is developed. This is achieved via optimization of polymer morphology and chain alignment in OPD devices through the formation of an extended interfacial hydrogen bonding network acting as nucleation site for enhanced chain alignment within the bulk material.
Date of Conference: 06-10 July 2014
Date Added to IEEE Xplore: 14 August 2014
Electronic ISBN:978-1-4799-5601-2

ISSN Information:

Conference Location: Graz, Austria

References

References is not available for this document.