期刊
CERAMICS INTERNATIONAL
卷 44, 期 3, 页码 2911-2918出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2017.11.039
关键词
Up-conversion; Spectral pure; RGB; Fingerprint
资金
- National Natural Science Foundation of China [51672215, 11274251]
- Research Fund for the Doctoral Program of Higher Education of China (RFDP) [20136101110017]
- Technology Foundation for Selected Overseas Chinese Scholar
- Ministry of Personnel of China (excellent)
- Natural Science Foundation of Shaanxi Province [2014JM1004]
- Foundation of Shaanxi Province Educational Department [15JS101]
Self-assembled three-dimensional Yb3+(Ln = Er, Ho, Tm) co-doped Gd2O3 up-converted (UC) phosphors were synthesized by a facile co-precipitation method, and their morphologies and microstructures were investigated by scanning electron microscope (SEM) and transmission electron microscope (TEM) analysis. Under the excitation at 980 nm, spectral pure three primary colors red, green and blue (RGB) emissions were respectively achieved in Yb3+/Er3+, Yb3+/Ho3+ and Yb-3 /Tm3+ co-doped Gd2O3 phosphors, in which spectral color purities were tuned by adjusting the doping concentration, annealing temperature, excitation power density and the pulse width of 980 run laser. These results provide deeper insights into modulating spectral color purities of up-converted emission, and the potential applications of spectrally pure RGB up-converted materials in fingerprint recognition and multi-color printing were also investigated.
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