Effect of gamma irradiation on optical properties of CdSe/ZnS quantum dots embedded in PDMS  

伽马辐照对嵌入PDMS的CdSe/ZnS量子点光学特性的影响

作　　者：WANG Ruirong GUO Hao TANG Jun LIU Jun LIU Jinping LIU Lishuang 王瑞荣;郭浩;唐军;刘俊;刘金萍;刘丽双(中北大学仪器科学与动态测试教育部重点实验室,山西太原030051;太原工业学院电子工程系,山西太原030008)

机构地区：[1]Key Laboratory of Instrumentation Science and Dynamic Measurement (North University of China),Ministray of Education, Taiyuan 030051, China [2]Department of Electronic Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China

出　　处：《Journal of Measurement Science and Instrumentation》2022年第1期122-126,共5页测试科学与仪器（英文版）

基　　金：National Natural Science Foundation of China(No.51775522);Scientific and Technologial Innovation Programs of Higher Education Institutions in Shanxi Province(No.2020L0638);Shanxi Province Key Laboratory of Quantum Sensing and Precision Measurement(No.201905D121001);Shanxi“1331 Project”Key Subjects Construction;Applied Basic Research Program in Shanxi Province(Nos.201901D211203,201801D221230)。

摘　　要：The optical properties of CdSe/ZnS quantum dots(QDs)embedded in polydimethylsiloxane(PDMS)flexible materials after irradiated withγ-rays were studied.As an embedding matrix,PDMS exhibits the advantage of high radiation hardness.The luminescence spectra and fluorescence lifetime of the irradiated and unirradiated samples were tested.The fluorescence intensity of QDs decreases with the increase of the irradiation dose according to the result of luminescence spectra.The fluorescence intensity of the QDs decreases by 80%after irradiation with a dose of 1 kGy,but the position of the emission peak and the spectral shape of the QDs remain consistent before and after irradiation.In addition,the fluorescence lifetime of QDs is shortened after irradiation.Based on the fluorescence response of QDs to the irradiation ofγ-rays and combined with flexible materials,our work provides a theoretical basis for the application of QDs as a new wearable dosimeter.

关 键 词：CdSe/ZnS quantum dots γirradiation polydimethylsiloxane(PDMS) DOSIMETRY 

分 类 号：TB3[一般工业技术—材料科学与工程]