摘要
以CsBr和PbBr_(2)为离子源、二甲基亚砜为良溶剂、甲苯为不良溶剂、油酸(OA)和油酰胺(OAm)为钝化剂,利用室温辅助沉降法制得全无机卤化物钙钛矿量子点CsPbBr_(3)。探究了甲苯温度、前驱体溶液的加入方式对于CsPbBr_(3)量子点发光性能的影响。实验结果表明,CsPbBr_(3)量子点发光强度随着甲苯温度的增高而变强,发光色纯度随着甲苯温度的增高而降低。温度为80℃时,发光强度最强,色纯度最纯。温度相同时,缓慢滴加前驱体时所得CsPbBr_(3)量子点的发光强度更强,快速注入前驱体时发光色纯度更纯。
Using CsBr and PbBr_(2) as ion sources,dimethyl sulfoxide as good solvent,toluene as bad solvent,oleic acid(OA)and oleamide(OAm)as passivators,all-inorganic halide perovskite quantum dot CsPbBr_(3) was prepared by room temperature assisted precipitation method.The effects of toluene temperature and the addition method of precursor solution on the luminescence properties of CsPbBr_(3) quantum dots were investigated.The experimental results show that the luminescent intensity of CsPbBr_(3) quantum dots increases with the increase of toluene temperature,and the luminescent color purity decreases with the increase of toluene temperature.When the temperature is 80℃,the luminous intensity is the strongest and the color purity is the purest.At the same temperature,the luminescent intensity of CsPbBr_(3) quantum dots is stronger when the precursor is slowly dropped,and the luminescent color purity is purer when the precursor is quickly injected.
作者
段鹏
谭兵
李宏斌
翟宇江
杨斌
杨鑫
Duan Peng;Tan Bing;Li Hongbin;Zhai Yujiang;Yang Bin;Yang Xin(Lanzhou New Area Specialization Texin Chemical Technology Co.,Ltd.,Gansu,730300)
出处
《当代化工研究》
CAS
2024年第1期173-175,共3页
Modern Chemical Research
关键词
钙钛矿量子点
CsPbBr_(3)
发光强度
半峰宽
稳定性
perovskite quantum dot
CsPbBr_(3)
photoluminescence intensity
full width at half-maximum
stability
