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Issue:
Preparation and Photoluminescence Properties of Cr Doped SiC Films
Author(s):
Zhu Xiaojian
,
Hong Bo
,
Jin Chenggang
,
Wu Xuemei
Pages:
213
-
216
Year:
2009
Issue:
4
Journal:
Micronanoelectronic Technology
Keyword:
铬掺杂碳化硅
;
双离子束溅射沉积
;
傅里叶变换红外光谱分析法
;
喇曼光谱分析法
;
光致发光
;
Abstract:
利用高纯SiC烧结靶上粘贴金属Cr片的复合靶用双离子束溅射沉积方法,在Si和KBr单晶衬底上制备了掺杂SiC薄膜.用傅里叶变换红外光谱分析法(FTIR)和喇曼光谱仪对制得的薄膜样品进行了表征,用荧光分光光度计对样品的光致发光(PL)特性进行了研究.通过FTIR分析得到对应于Si-C键的峰位没有发生明显改变而峰强随着Cr掺杂量的增加而降低,喇曼光谱分析发现Cr掺杂导致Si和C团簇的形成,说明Cr的掺杂阻碍了Si-C键的结合.将不同Cr掺杂浓度的SiC薄膜经1000℃退火处理,发现位于413、451和469nm的三个发光峰的位置基本不变,但强度有明显改变.
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