期刊
APPLIED PHYSICS LETTERS
卷 96, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3297905
关键词
adsorption; chromium; desorption; gold; metal-semiconductor-metal structures; nanosensors; nanowires; optical modulation; photodetectors; ultraviolet detectors; wide band gap semiconductors; zinc compounds
资金
- Nanyang Technological University, Singapore
Ultraviolet (UV) photodetectors based on ternary Zn2GeO4 nanowire (NW) networks are demonstrated. The devices show fast response and recovery time, which is attributed to the unique NW-NW junction barrier dominated conductance for network devices. The UV-light induced barrier height modulation is much faster than the oxygen adsorption/desorption processes. The wide-band gap Zn2GeO4 NWs also exhibit high wavelength selectivity for deep UV detection. We demonstrate that ternary oxide NW-networks are ideal building blocks for nanoscale photodetectors with superior performance and facile fabrication processes.
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