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CN108002430B 一种小尺寸高稳定性的Cs4PbBr6钙钛矿纳米晶的制备方法 失效 - 权利终止

一种小尺寸高稳定性的Cs4PbBr6钙钛矿纳米晶的制备方法
摘要：
本发明的一种小尺寸高稳定性的Cs4PbBr6钙钛矿纳米晶的制备方法属于半导体纳米材料制备的技术领域，首先将羧酸铯溶液在140℃～200℃下注入到N2保护的溴化铅溶液中进行反应，合成尺寸为3.8nm～11.8nm的CsPbBr3钙钛矿纳米块，然后将此CsPbBr3纳米块进行纯化处理后用十八烯进行分散，升温至25℃～120℃后，注入溴化胺溶液，反应3～8分钟后进行离心纯化处理，得到Cs4PbBr6纳米粒子。本发明具有操作简单、步骤简易、反应迅速、原料易得等特点，制备的Cs4PbBr6粒子尺寸均一，形貌规则，稳定性良好，其储备液在空气中放置一个月的时间，粒子仍能保持不变。
摘要（英）：

The invention relates to a preparation method of a small-size high-stability perovskite nanocrystalline Cs4PbBr6, and belongs to the technical field of preparation of semiconductor nanomaterials. Thepreparation method comprises the following steps: firstly injecting a caesium carboxylate solution into a lead bromide solution at the temperature of 140 DEG C to 200 DEG C under the protection of N2,reacting, synthesizing a perovskite nano-block CsPbBr3 with the size of 3.8 nm to 11.8 nm, purifying the perovskite nano-block CsPbBr3, dispersing the perovskite nano-block CsPbBr3 by using octadecene, raising the temperature to 25 DEG C to 120 DEG C, injecting an ammonium bromide solution, reacting for 3-8 minutes, then centrifuging and purifying to obtain a nanoparticle Cs4PbBr6. The preparation method has the characteristics of easy operation, simple steps and rapid reaction, the raw materials are easy to get, the prepared particles Cs4PbBr6 are uniform in size, regular in morphology and excellent in stability, and the particle keeps unchanged even after a stock solution is placed in the air for a month.

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