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- Title
Simple low-temperature chemical bath route to synthesize novel Ga-doped ZnO nanostructures for high photoresponse.
- Authors
Wang, Nan; Li, Pei; Xu, Jun; Cui, Can; Li, Huijun; Yao, Pei
- Abstract
Ga-doped ZnO (GZO) nanostructures with high photoresponse were deposited on the seed layers of GZO thin films via polyethylene glycol (PEG400)-assisted chemical bath method at low temperatures. GZO thin films were prepared on quartz glass substrates by sol-gel spin coating technique. The structural, optical and photoelectrical properties of the GZO nanostructures were investigated. The scanning electron microscopy images showed GZO nanostructures presented nanosheets at 50 and 60 °C and nanopillars at 70 and 80 °C. X-ray diffraction results revealed that GZO nanostructures had a hexagonal wurtzite structure. Room temperature photoluminescence spectra exhibited ultraviolet emission peak and visible emission peak. The defect emission peak of GZO nanostructures was red-shifted from 521 to 571 nm when the temperature was increased. Moreover, all the samples are photoelectrically active under simulated solar light. High sensitivity and enhanced photocurrent bring a profound understanding to photoswitches and photodetectors using GZO nanostructures.
- Subjects
NANOSTRUCTURED materials synthesis; ZINC oxide thin films; NANOSTRUCTURES; POLYETHYLENE glycol; SOL-gel processes; SPIN coating; DOPED semiconductors
- Publication
Journal of Materials Science: Materials in Electronics, 2015, Vol 26, Issue 2, p671
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-014-2448-3