[1] Xiamen Univ, Dept Mat Sci & Engn, Coll Mat, Xiamen 361005, Peoples R China
[2] Xiamen Univ, Fujian Key Lab Adv Mat, Xiamen 361005, Peoples R China
[3] Xiamen Univ, Minist Educ, Key Lab High Performance Ceram Fibers, Xiamen 361005, Peoples R China
[4] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA
[5] Xiamen Univ, Dept Elect Sci, Fujian Engn Res Ctr Solid State Lighting, Xiamen 361005, Peoples R China