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

Journal Article · Mon Dec 23 00:00:00 EST 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4858390· OSTI ID:22253202

Xie, Yanru; Li, Qinghao; Wei, Guodong; Wang, Dong; Chen, Yanxue; Yan, Shishen; Liu, Guolei; Mei, Liangmo ^[1]; Wei, Lin ^[2]; Jiao, Jun ^[3]

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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)

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.

• OSTI ID: 22253202
• Journal Information: Applied Physics Letters, Vol. 103, Issue 26; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ELECTRONS
HETEROJUNCTIONS
NANOSTRUCTURES
ORGANIC SEMICONDUCTORS
PHOTODETECTORS
PULSE RISE TIME
SENSITIVITY
SOLIDS
TITANIUM OXIDES
VISIBLE RADIATION