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    武素丽

    • 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
    • 办公地点:西部校区实验楼E-422
    • 联系方式:13842603107
    • 电子邮箱:wusuli@dlut.edu.cn

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    External current-controlled dynamic display by integrating upconversion micro-disks with power density-dependent color into NIR luminescent diodes

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    论文类型:期刊论文

    第一作者:Meng, Zhipeng

    通讯作者:Wu, SL (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, 2 Linggong Rd, Dalian 116024, Peoples R China.

    合写作者:Wu, Suli,Zhang, Shufen

    发表时间:2018-12-28

    发表刊物:JOURNAL OF MATERIALS CHEMISTRY C

    收录刊物:SCIE

    卷号:6

    期号:48

    页面范围:13101-13107

    ISSN号:2050-7526

    摘要:An externally controlled color-tunable light-emitting device is always the frontier of color display. However, multiple colors are usually realized using different materials with variable composition, phase or structure. Developing materials, which can emit tunable colors on changing external stimuli in a fixed composition, will avoid the energy loss by mixing different materials emitting a single color. Here, we designed a core-shell upconversion micro-disk structure with high concentration of Yb3+ doped in the core. Fine-tuning color output is achieved by varying the power density of the excitation light within a range of 0.8-12.9W cm(-2), which is lower than most of the reported ones and can be realized by commercial NIR-LED. Importantly, we designed a dynamic display device by integrating the micro-disks in a series of NIR-LEDs. For the first time, the dynamic red, orange, yellow and green colors can be demonstrated by simply changing the external current. A red shape of a standing human and a green shape of human with walking step can be dynamically realized in a LED array by varying the external current.