张淑芬

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:女

毕业院校:大连理工大学

学位:博士

所在单位:化工学院

学科:应用化学. 精细化工. 有机化学

办公地点:大连市高新区凌工路2号西部校区化工楼E434房间

联系方式:0411-84986265

电子邮箱:zhangshf@dlut.edu.cn

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Vivid structural colors with low angle dependence from long- range ordered photonic crystal films

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论文类型:期刊论文

发表时间:2017-03-07

发表刊物:NANOSCALE

收录刊物:SCIE、EI、PubMed

卷号:9

期号:9

页面范围:3002-3009

ISSN号:2040-3364

摘要:Structural colored materials have attracted increasing attention due to their vivid color effects and non-photobleaching characteristics. However, the angle dependence of these structural colors severely restricts their practical applications, for example, in display and sensing devices. Here, a new strategy for obtaining low angle dependent structural colors is demonstrated by fabricating long-range ordered photonic crystal films. By using spheres with high refractive indices as building blocks, the angle dependence of the obtained colors has been strongly suppressed. Green, golden yellow and red structural colored films with low angle dependence were obtained by using 145 nm, 165 nm and 187 nm Cu2O spheres as building blocks, respectively. SEM images confirmed the long-range highly ordered arrays of the Cu2O photonic crystal films. Reflectance spectra and digital photographs clearly demonstrate the low angle dependence of these structural colors, which is in sharp comparison with the case of polystyrene (PS) and SiO2 photonic crystal films. Furthermore, these structural colors are vivid with high color saturation, not only under black background, but also under white background and natural light without adding any light-absorbing agents. These low angle dependent structural colors endow Cu2O photonic crystal films with great potential in practical applications. Our findings may broaden the strategies for the design and fabrication of angle independent structural colored materials.