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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 11 — May. 24, 2010
  • pp: 11821–11826

High-response ultraviolet photodetector based on N,N’-bis(naphthalen-1-yl)-N,N’-bis(phenyl)benzidine and 2-(4-tertbutylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole

Q. Dai and X. Q. Zhang  »View Author Affiliations

Optics Express, Vol. 18, Issue 11, pp. 11821-11826 (2010)

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A high-performance heterojunction ultraviolet (UV) photodetector based on N,N’-bis(naphthalen-1-yl)-N,N’-bis(phenyl)benzidine (NPB) and 2-(4-tertbutylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole (PBD) has been fabricated. The J-V characteristic curves of the device demonstrate a more than 4 orders of magnitude difference when illuminated under a 350 nm UV light and in the dark at + 3 V. The device exhibits high sensitivity in the 300–420 nm region with the peak located around 350 nm. A high photocurrent response of 4.5 A/W at +3 V under an incident intensity of 60 μW/cm2 was achieved. These results indicate that the NPB/PBD heterojunction structure device might be used as low-cost UV photodetectors.

© 2010 OSA

OCIS Codes
(040.5160) Detectors : Photodetectors
(040.7190) Detectors : Ultraviolet
(160.4890) Materials : Organic materials

ToC Category:

Original Manuscript: September 10, 2009
Revised Manuscript: January 29, 2010
Manuscript Accepted: February 12, 2010
Published: May 19, 2010

Q. Dai and X. Q. Zhang, "High-response ultraviolet photodetector based on N,N’-bis(naphthalen-1-yl)-N,N’-bis(phenyl)benzidine and 2-(4-tertbutylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole," Opt. Express 18, 11821-11826 (2010)

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