Chen Qin, Hu Xin, Wen Long, Yu Yan, Cumming David R S
Key Lab of Nanodevices and Applications-CAS & Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Suzhou, 215123, P. R. China.
School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK.
Small. 2016 Sep;12(36):4922-4935. doi: 10.1002/smll.201600528. Epub 2016 May 30.
The increasing miniaturization and resolution of image sensors bring challenges to conventional optical elements such as spectral filters and polarizers, the properties of which are determined mainly by the materials used, including dye polymers. Recent developments in spectral filtering and optical manipulating techniques based on nanophotonics have opened up the possibility of an alternative method to control light spectrally and spatially. By integrating these technologies into image sensors, it will become possible to achieve high compactness, improved process compatibility, robust stability and tunable functionality. In this Review, recent representative achievements on nanophotonic image sensors are presented and analyzed including image sensors with nanophotonic color filters and polarizers, metamaterial-based THz image sensors, filter-free nanowire image sensors and nanostructured-based multispectral image sensors. This novel combination of cutting edge photonics research and well-developed commercial products may not only lead to an important application of nanophotonics but also offer great potential for next generation image sensors beyond Moore's Law expectations.
图像传感器不断提高的小型化程度和分辨率给诸如光谱滤光片和偏振器等传统光学元件带来了挑战,这些元件的特性主要由所使用的材料决定,包括染料聚合物。基于纳米光子学的光谱滤波和光学操纵技术的最新进展为在光谱和空间上控制光提供了一种替代方法。通过将这些技术集成到图像传感器中,将有可能实现高紧凑性、更好的工艺兼容性、强大的稳定性和可调功能。在这篇综述中,介绍并分析了纳米光子图像传感器的近期代表性成果,包括具有纳米光子彩色滤光片和偏振器的图像传感器、基于超材料的太赫兹图像传感器、无滤光片纳米线图像传感器以及基于纳米结构的多光谱图像传感器。这种前沿光子学研究与成熟商业产品的新颖结合不仅可能导致纳米光子学的重要应用,而且还为超越摩尔定律预期的下一代图像传感器提供了巨大潜力。