Li Ling, Wang Shenwei, Mu Guangyao, Yin Xue, Ou Kai, Yi Lixin
Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, China.
Sci Rep. 2015 Nov 13;5:16659. doi: 10.1038/srep16659.
Rare-earth silicates are highly efficient materials for silicon-based light sources. Here we report a novel light-emitting device based on Ce2Si2O7. Intense violet/blue electroluminescence was observed, with a turn-on voltage of about 13 V. The violet/blue emission is attributed to 4f-5d transitions of the Ce(3+) ions in Ce2Si2O7, which are formed by interfacial reaction of CeO2 and Si. Electroluminescence and photoluminescence mechanisms of the Ce2Si2O7 light-emitting device are also discussed.
稀土硅酸盐是用于硅基光源的高效材料。在此，我们报道了一种基于Ce2Si2O7的新型发光器件。观察到强烈的紫/蓝色电致发光，开启电压约为13V。紫/蓝色发射归因于Ce2Si2O7中Ce(3+)离子的4f-5d跃迁，其由CeO2和Si的界面反应形成。还讨论了Ce2Si2O7发光器件的电致发光和光致发光机制。
