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ZnSeTe/ZnSe量子阱中Te等电子陷阱的静压光子发光谱研究

Keywords: Te等电子陷阱光致发光谱锌硒碲三元化合物Ⅱ-Ⅵ族化合物半导体静压ZnSeTe/ZnSeZnSe硒化锌量子阱

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Abstract:

测量了ZnSe0.92Te0.08/ZnSe超晶格量子阱材料在77K时0-7.8GPa静压下的光致发光谱。观察到ZnSe0.92Te0.08阱层中Te等电子陷阱上的束缚洋鬼子发光,发现它的压力系数比ZnSe带边发光的压力系数小的约50%,表明Te等电子陷阱对激子的束缚势是相当局域的。还观察到了激子在ZnSe0.92Te0.08阱层中的Te等电子陷阱能级与相邻(CdSe)1/(ZnSe)3短周期超晶格之间的转移现象。

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