Application of Nanostructured TiO2 in UV Photodetectors: A Review
Application of Nanostructured TiO2 in UV Photodetectors: A Review
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发表时间：
2022
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通讯作者：
Xiaosheng Fang
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作者：
Ziliang Li;Ziqing Li;Chaolei Zuo;Xiaosheng Fang
As a wide bandgap inorganic semiconductor material, the titanium dioxide (TiO2) which possesses 3 crystal polymorphs (i.e., rutile, anatase and brookite), has gained tremendous attention as a cutting-edge material for the application in environment and energy field. Based on the strong attractiveness from its advantages such as high stability, excellent photoelectric properties and low-cost fabrication, the construction of high-performance photodetectors (PDs) based on TiO2 nanostructures is being extensively developed. An elaborate microtopography and device configuration is the most widely used strategy to achieve efficient TiO2-based PDs with high photoelectric performances, however, a deep understanding of all the key parameters that influence the behavior of photon-generated carriers, is also highly required to achieve improved photoelectric performances as well as their ultimate functional applications. In this review, we present an in-depth illustration of the electrical and optical properties of TiO2 nanostructures in addition to the advances in the technological issues such as preparation, micro-defects, p-type doping, band-gap engineering, heterojunctions, and functional applications. Finally, we provide future outlooks for the TiO2-based photoelectric devices, particularly that of further functional applications. This work will systematically illustrate the fundamentals of TiO2 and shed light on the preparation of more efficient TiO2 nanostructures and heterojunctions for the future photoelectric applications.
