采用溶液化学方法制备了Er3+掺杂浓度为lat%的Er∶GaN微纳米晶材料.对退火前后材料的结构、形貌和发光性能进行了表征.结果表明:Er∶ GaN微纳米晶样品为纯的六方GaN相.退火后出现晶粒长大现象,且氧含量降低,微纳米晶的结晶质量变好.退火处理后出现了Er3+相关的524 nm和547 nm的绿光峰,660 nm的红光峰.在980 nm激发下,在Yb,Er∶GaN微纳米晶样品中实现了上转换荧光发射,并观察到了和Er∶ GaN微纳米晶相同的发光峰.
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