World Premier International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
Sensors (Basel). 2009;9(8):6504-29. doi: 10.3390/s90806504. Epub 2009 Aug 20.
One-dimensional (1D) metal-oxide nanostructures are ideal systems for exploring a large number of novel phenomena at the nanoscale and investigating size and dimensionality dependence of nanostructure properties for potential applications. The construction and integration of photodetectors or optical switches based on such nanostructures with tailored geometries have rapidly advanced in recent years. Active 1D nanostructure photodetector elements can be configured either as resistors whose conductions are altered by a charge-transfer process or as field-effect transistors (FET) whose properties can be controlled by applying appropriate potentials onto the gates. Functionalizing the structure surfaces offers another avenue for expanding the sensor capabilities. This article provides a comprehensive review on the state-of-the-art research activities in the photodetector field. It mainly focuses on the metal oxide 1D nanostructures such as ZnO, SnO(2), Cu(2)O, Ga(2)O(3), Fe(2)O(3), In(2)O(3), CdO, CeO(2), and their photoresponses. The review begins with a survey of quasi 1D metal-oxide semiconductor nanostructures and the photodetector principle, then shows the recent progresses on several kinds of important metal-oxide nanostructures and their photoresponses and briefly presents some additional prospective metal-oxide 1D nanomaterials. Finally, the review is concluded with some perspectives and outlook on the future developments in this area.
一维（1D）金属氧化物纳米结构是探索纳米尺度上大量新现象以及研究纳米结构性质的尺寸和维度依赖性的理想体系，这些性质对于潜在应用具有重要意义。近年来，基于具有定制几何形状的此类纳米结构构建和集成光探测器或光学开关取得了快速进展。有源 1D 纳米结构光电探测器元件可以配置为电阻器，其电导通过电荷转移过程改变，或者可以配置为场效应晶体管（FET），其性质可以通过在栅极上施加适当的电势来控制。功能化结构表面为扩展传感器功能提供了另一种途径。本文对光电探测器领域的最新研究活动进行了全面综述。它主要侧重于金属氧化物 1D 纳米结构，如 ZnO、SnO(2)、Cu(2)O、Ga(2)O(3)、Fe(2)O(3)、In(2)O(3)、CdO、CeO(2)及其光响应。综述首先调查了准 1D 金属氧化物半导体纳米结构和光电探测器原理，然后展示了几种重要金属氧化物纳米结构及其光响应的最新进展，并简要介绍了一些其他有前景的金属氧化物 1D 纳米材料。最后，对该领域未来的发展进行了展望和展望。
