The Study of ZnO Photoconductive UV Detector

Li, Ying; Feng, Shiwei; Sun, Jie; Xie, Xiaojun; Yang, Jiamin; Yuezong, Zhang; Lu, Yi‐Hsuan

doi:10.1109/icsict.2006.306603

Cited by 2 publications

(2 citation statements)

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“…In order to obtain high performance ZnO photoconductors, different methods such as surface treatment and covering by other materials have been used by several groups [ 18 – 20 ]. The oxygen plasma treatment is found to dramatically enhance the UV detection properties of ZnO, reducing the decay time constant (to below 50 μs) and increasing the on/off ratio of photocurrent (to over 1,000) with high UV responsivity (1–10 A/W) [ 18 ].…”

Section: Zno-based Photodetectorsmentioning

confidence: 99%

“…The reason for this result may be that oxygen plasma treatment can effectively suppress the chemisorption effect and the oxygen vacancy in ZnO films. Additionally, surface HCl treatment [ 19 ] and SiO 2 covering [ 20 ] on the surface of devices can increase the photoresponsivity, but they also can increase the dark current due to the damage on ZnO films. More recently, Sun and coworkers reported a photoconductive detector based on intentionally Ga-doped ZnO film on quartz by RF sputtering [ 27 ].…”

Section: Zno-based Photodetectorsmentioning

confidence: 99%

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ZnO-Based Ultraviolet Photodetectors

Liu

Sakurai

Aono

2010

Sensors

621

336

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Ultraviolet (UV) photodetection has drawn a great deal of attention in recent years due to a wide range of civil and military applications. Because of its wide band gap, low cost, strong radiation hardness and high chemical stability, ZnO are regarded as one of the most promising candidates for UV photodetectors. Additionally, doping in ZnO with Mg elements can adjust the bandgap largely and make it feasible to prepare UV photodetectors with different cut-off wavelengths. ZnO-based photoconductors, Schottky photodiodes, metal–semiconductor–metal photodiodes and p–n junction photodetectors have been developed. In this work, it mainly focuses on the ZnO and ZnMgO films photodetectors. We analyze the performance of ZnO-based photodetectors, discussing recent achievements, and comparing the characteristics of the various photodetector structures developed to date.

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Section: Zno-based Photodetectorsmentioning

confidence: 99%