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Title: Self-powered solid-state photodetector based on TiO{sub 2} nanorod/spiro-MeOTAD heterojunction

A nanostructured solid-state photodetector based on an inorganic/organic semiconductor heterojunction of TiO{sub 2} nanorod/spiro-MeOTAD is constructed. Spiro-MeOTAD serves as the active absorption layer and TiO{sub 2} offers a direct pathway for electron transport. A maximum photoresponsivity of 0.01 A/W was observed under illumination of 410 nm at 0 V bias. The time response (decay time is 0.06 s and rise time is 0.12 s) was observed to be rapid. The self-powered device is a promising candidate for application in high-sensitivity and high-speed blue light photodetectors. These results provided a simple way to fabricate low-cost, high spectrum selectivity hybrid photodetector with large area.
Authors:
; ; ; ; ; ; ;  [1] ;  [2] ;  [3]
  1. School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 (China)
  2. School of Information Science and Engineering, Shandong University, Jinan 250100 (China)
  3. Department of Mechanical and Materials Engineering, Portland State University, P.O. Box 751, Portland, Oregon 97207-0751 (United States)
Publication Date:
OSTI Identifier:
22253202
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 26; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ELECTRONS; HETEROJUNCTIONS; NANOSTRUCTURES; ORGANIC SEMICONDUCTORS; PHOTODETECTORS; PULSE RISE TIME; SENSITIVITY; SOLIDS; TITANIUM OXIDES; VISIBLE RADIATION