论文类型：期刊论文
第一作者：Qiang He
发表刊物：Optics Express
收录刊物：SCI
所属单位：光学与电子信息学院
学科门类：工学
一级学科：光学工程
文献类型：J
DOI码：10.1364/OE.411874
发表时间：2020-11-20
摘要：Structural color filters (i.e. plasmonics and nano-cavities) provide vivid and robust color filtering in applications such as CMOS image sensors but lack simplicity in fabrication and dynamic tuning. Here we report a dynamically tunable, transmissive color filter by incorporating an ultra-thin phase change layer inside a thin-film optical resonator. The transmitted color spectrum can be designed over the entire visible range and shifted by around 50 nm after phase transition. Angle dependence shows little color variation within a ±30° viewing angle. Crucially, only film deposition is required to fabricate our phase change color filter, showing great potential for large-scale and inexpensive production. The dynamically tunable color filter, described in this paper, could be a promising component in display, CMOS sensor, and solar cell technology.