Solution-processed pentathiophene dendrimer based photodetectors for digital cameras

A. K. Pandey, K. D. Johnstone, P. L. Burn*, I. D. W. Samuel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

The photosensing ability of two blue-absorbing dendrimers is presented. Bulk heterojunction photodetectors were fabricated by spin-coating a blend solution of quinquethiophene (pentathiophene) cored conjugated dendrimers and [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM). The photoresponse characterized under monochromatic illumination at 442 nm increases linearly with a dynamic range of similar to 10(5). The response approaches that required for spectral selectivity for camera applications, and the external quantum efficiency of the photodetectors reached up to 22.5% at 435 nm. (C) 2014 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)245-251
Number of pages7
JournalSensors and Actuators B: Chemical
Volume196
DOIs
Publication statusPublished - Jun 2014

Keywords

  • Photodiodes
  • Dendrimers
  • Machine vision
  • SOLAR-CELLS
  • PHOTODIODES
  • POTENTIALS

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