Nonvolatile phase-change materials color display designed by evolutionary search

Results in Physics

Jie Huang¹  Yang Qian²  Xiang Huang³  Zhengrong Zhang³  Lina Yang³  Junbo Yang³ 

[1] Center of Material Science, National University of Defense Technology, Changsha, Hunan 41410073, China;Center of Material Science, National University of Defense Technology, Changsha, Hunan 41410073, China;Guangxi Key Laboratory of Multimedia Communications and Network Technology, School of Computer, Electronics and Information, Guangxi University, Nanning 530004, China;

关键词: Inverse design;    Phase change materials;    Structural color;   

DOI  :  

来源: DOAJ

【 摘 要 】

Switching color dynamically becomes urgent in the field of display, numerous researches have been carried out to actualize controllable structural colors. However, shape freedom has rarely been explored in existing studies. Here we explore the relationship between grating shape and reflection spectrum by search algorithm, and designed structures can reflect colors dynamically by using Ge2Sb2Te5(GST) as phase-change materials(PCMs) layer. Numerical results establish that 36.4% sRGB color space can be obtained when GST in the crystalline state, after the state is switched to amorphous, reflection colors changed evidently, it is demonstrated that the chromatic aberration(ΔE) of fundamental colors can reached 23.39, 13.77 and 35.42, respectively.

【 授权许可】

Unknown