科研之友
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摘要
YLiF4 codoped with E3+, Tm3+ and Yb3+ ions was synthesized by hydrothermal method. The absorption spectra and upoonversion spectra excited at 980 nm were investigated. Under the excitation of infrared photons, strong white emission can be obtained. According to the value of n obtained from the power law, the 484 rim blue emission, 524 and 552 nm green emission, and 665 nm red emission are all due to two photon process, while the UV emission is attributed to three photon process. The authors also analyzed the upconversion mechanism and process.
- 出版日期2005-6
- 单位北京交通大学
