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发明公开
CN1631793A 硒化镉和碲化镉量子点的合成方法 失效 - 权利终止 转让

硒化镉和碲化镉量子点的合成方法
摘要：
本发明属于溶剂热法合成硒化镉和碲化镉量子点的方法，该方法是以含2～18个碳原子的烷基羧酸镉或氧化镉为镉源，硒粉和碲粉分别为硒源和碲源，镉源和硒源或碲源的摩尔比为5∶1－1∶5，并使用三辛基膦溶解硒粉和碲粉，油酸、十六烷基胺或三辛基氧化膦为包裹剂，镉源和包裹剂的摩尔比为1∶2－1∶6，苯、甲苯、环己烷、正己烷或正庚烷为溶剂，镉源的浓度为0.001－0.015M，在高压釜内140－180℃的条件下加热0.8－16小时来完成反应的，并且通过改变反应时间获得不同尺寸的硒化镉和碲化镉量子点。合成的硒化镉和碲化镉量子点具有较窄的尺寸分布，表现为较窄的荧光发射，硒化镉量子点荧光发射峰半峰宽为22－33nm，碲化镉量子点荧光发射峰半峰宽为29－35nm。
摘要（英）：

The invention belongs to the method for compounding cadmium selenide and quanta of cadmium telluride, which is: use cadmium oxide containing 2~18 carbon atom as cadmium source, selenium powder as selenium source and tellurium powder as tellurium source, and the mol ratio of cadmiumsource and selenium source or tellurium source is 5:1-1:5, dissolve the selenium and tellurium powder with tricapryl phosphine, make oleic acid, and tricapryl phosphine oxide as enveloping agent and the mol ratio of cadmium source and enveloping agent is 1:2-1:6, use benzene, toluene, cyclohexane, normal hexane and normal heptane as solvent, under the condition that the density of cadmium source is 0.001-0.015M, the temperature in autoclave is 140-180deg.C, heat them for 0.8-16 hours and obtain cadmium selenide and quanta of cadmium telluride with different sizes by changing the reaction time. The cadmium selenide and quanta of cadmium telluride has narrower size distribution which is shown as narrower shooting of fluorescence whose half-peak width of quanta of cadmium selenide is 22-33nm and that of quanta of cadmium telluride is 29-35nm.

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