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Sensors 2013, 13(8), 10482-10518; doi:10.3390/s130810482

A Comprehensive Review of Semiconductor Ultraviolet Photodetectors: From Thin Film to One-Dimensional Nanostructures

1
International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
2
JST-PRESTO, the Japan Science and Technology Agency, Tokyo 102-0076, Japan
3
Optical and Electronic Materials Unit, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
4
JST-ALCA, the Japan Science and Technology Agency, Tokyo 102-0076, Japan
*
Author to whom correspondence should be addressed.
Received: 17 June 2013 / Revised: 2 August 2013 / Accepted: 8 August 2013 / Published: 13 August 2013
(This article belongs to the Special Issue Photodetectors)

Abstract

Ultraviolet (UV) photodetectors have drawn extensive attention owing to their applications in industrial, environmental and even biological fields. Compared to UV-enhanced Si photodetectors, a new generation of wide bandgap semiconductors, such as (Al, In) GaN, diamond, and SiC, have the advantages of high responsivity, high thermal stability, robust radiation hardness and high response speed. On the other hand, one-dimensional (1D) nanostructure semiconductors with a wide bandgap, such as β-Ga2O3, GaN, ZnO, or other metal-oxide nanostructures, also show their potential for high-efficiency UV photodetection. In some cases such as flame detection, high-temperature thermally stable detectors with high performance are required. This article provides a comprehensive review on the state-of-the-art research activities in the UV photodetection field, including not only semiconductor thin films, but also 1D nanostructured materials, which are attracting more and more attention in the detection field. A special focus is given on the thermal stability of the developed devices, which is one of the key characteristics for the real applications.
Keywords: ultraviolet photodetector; semiconductor; thin film; one-dimensional nanostructures ultraviolet photodetector; semiconductor; thin film; one-dimensional nanostructures
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Sang, L.; Liao, M.; Sumiya, M. A Comprehensive Review of Semiconductor Ultraviolet Photodetectors: From Thin Film to One-Dimensional Nanostructures. Sensors 2013, 13, 10482-10518.

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