Colloidal CdSe quantum dot (QD) phosphors have attracted considerable attention as green and red phosphors for blue backlight downconversion in next-generation liquid-crystal displays because of their excellent emission features including tunable emission wavelength and narrow emission bands. Alternatives to CdSe, which do not contain toxic cadmium, are strongly desired to ensure safety and reduce the environmental load of consumer products. Herein, we synthesized colloidal Zn(Te,Se)/ZnS core/shell QDs and demonstrated narrow-band green photoluminescence (PL) emission. A full width at half-maximum of 30 nm was achieved for PL emission at 535 nm from Zn(Te_0.77Se_0.23)/ZnS core/shell QDs with a core QD diameter of 4.3 nm. This emission characteristic was as good as that of CdSe QDs.

中文翻译：

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具有窄带和绿色光致发光的胶体Zn（Te，Se）/ ZnS核/壳量子点

胶态CdSe量子点（QD）荧光粉作为下一代液晶显示器中用于蓝色背光下转换的绿色和红色荧光粉，引起了相当大的关注，因为它们的出色发射特性包括可调的发射波长和窄的发射带。迫切需要不含毒性镉的CdSe替代品，以确保安全并降低消费产品的环境负荷。在这里，我们合成了胶体Zn（Te，Se）/ ZnS核/壳量子点，并证明了窄带绿色光致发光（PL）发射。从核心QD直径为4.3 nm的Zn（Te _0.77 Se _0.23）/ ZnS核/壳QD在535 nm处的PL发射实现了30 nm的半峰全宽。该发射特性与CdSe QD一样好。