Simple near-infrared photodetector based on charge transfer complexes formed in molybdenum oxide doped N,N′-di(naphthalene-1-yl)-N,N′-diphenyl-benzidine

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

13 Scopus Citations
View graph of relations

Author(s)

  • S. H. Wu
  • M. F. Lo
  • Z. Y. Chen
  • T. W. Ng
  • X. Hu
  • H. W. Mo
  • C. Wu
  • W. L. Li

Detail(s)

Original languageEnglish
Pages (from-to)129-131
Journal / PublicationPhysica Status Solidi - Rapid Research Letters
Volume6
Issue number3
Publication statusPublished - Mar 2012

Abstract

We have demonstrated a simple near-infrared (NIR) photodetector (PD) based on charge transfer complex (CTC) formed in molybdenum trioxide (MoO 3) doped N,N′-di(naphthalene-1-yl)-N,N′-diphenyl-benzidine (NPB), which shows a photocurrent of about 0.35 A/cm 2 at -3 V under 980 nm illumination. The existence of CTC formation promotes photocurrent generation which is investigated by comparison with MoO 3 doped 2-methyl-9,10-di(2-naphthyl)anthracene (MADN) film which has no CTC absorption. It can be evolved that this kind of simple-structure photodetector has potential application in the near-infrared (NIR) detection area. It is shown in this Letter that although both MoO 3 and NPB have larger energy gaps of about 3 eV and weak absorption in the NIR region, the charge transfer complexes formed by mixing the two materials show an extra absorption band and good photoelectric response in the NIR region. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Research Area(s)

  • Charge transfer complexes, Organic materials, Photodetectors

Citation Format(s)

Simple near-infrared photodetector based on charge transfer complexes formed in molybdenum oxide doped N,N′-di(naphthalene-1-yl)-N,N′-diphenyl-benzidine. / Wu, S. H.; Lo, M. F.; Chen, Z. Y.; Ng, T. W.; Hu, X.; Mo, H. W.; Wu, C.; Li, W. L.; Lee, C. S.

In: Physica Status Solidi - Rapid Research Letters, Vol. 6, No. 3, 03.2012, p. 129-131.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review