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Spectroelectrochemical Study of the Formation of Radical cations of 4,4’-bis[N-(1-naphthyl)-N-phenyl-amino]-biphenyl as a Hole Transport Semiconductor Material

Published online by Cambridge University Press:  14 January 2011

Sharavsambuu Baasanjav ,
Gendensvren Bolormaa ,
Batjargal Naranbileg ,
Munkhbat Battulga  and
Chimed Ganzorig
Sharavsambuu Baasanjav
Affiliation:
Center for Nanoscience and Nanotechnology and Department of Chemical Technology, School of Chemistry and Chemical Engineering, National University of Mongolia, Ulaanbaatar, Mongolia
Gendensvren Bolormaa
Affiliation:
Center for Nanoscience and Nanotechnology and Department of Chemical Technology, School of Chemistry and Chemical Engineering, National University of Mongolia, Ulaanbaatar, Mongolia
Batjargal Naranbileg
Affiliation:
Center for Nanoscience and Nanotechnology and Department of Chemical Technology, School of Chemistry and Chemical Engineering, National University of Mongolia, Ulaanbaatar, Mongolia
Munkhbat Battulga
Affiliation:
Center for Nanoscience and Nanotechnology and Department of Chemical Technology, School of Chemistry and Chemical Engineering, National University of Mongolia, Ulaanbaatar, Mongolia
Chimed Ganzorig
Affiliation:
Center for Nanoscience and Nanotechnology and Department of Chemical Technology, School of Chemistry and Chemical Engineering, National University of Mongolia, Ulaanbaatar, Mongolia
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Abstract

Spectroelectrochemical study on a new absorption band of radical cations of 4,4’-bis[N-(1-naphthyl)-N-phenyl-amino]-biphenyl (α-NPD) as an electron-donor hole-transporting material used in organic electronics is reported in this work. UV-visible spectroscopic and cyclic voltammetric properties for α-NPD in solution are also examined. We find that the results are attributed to quenching process for blue fluorescence from α-NPD by excess α-NPD+ radical cations accumulated in the emission region in the organic light-emitting devices related to a relatively large overlap between the fluorescence spectrum of α-NPD and the absorption spectrum of α-NPD+ radical cations. The band gap energy for α-NPD is calculated from the UV-visible spectroscopic data.

Keywords

absorptionelectronic materialluminescence
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1286: Symposium E – Molecular and Hybrid Materials for Electronics and Photonics , 2011 , mrsf10-1286-e03-16
Copyright
Copyright © Materials Research Society 2011

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References

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