多路发光Cd_xZn_(1-x)Se量子点的制备及防伪功能设计  

Synthesis and Anti-Fake Function Design of Multiple Luminescent Cd_xZn_(1-x)Se Quantum Dots

作　　者：白雪莲[1] 都基焱[1] 曾杰[2] 吴斌[1] 于旭东[1] 房凌晖[1] 

机构地区：[1]解放军炮兵学院无人机和机械工程系,合肥230031 [2]中国科学技术大学微尺度物质科学国家实验室,合肥230026

出　　处：《高等学校化学学报》2011年第6期1261-1265,共5页Chemical Journal of Chinese Universities

基　　金：安徽省自然科学基金(批准号:10040606Q62);教育部博士后基金(批准号:200904501378)资助

摘　　要：采用化学输运法制备了一系列CdxZn1-xSe(0.4≤x≤1)量子点.实验结果表明,随着量子点中Cd含量的增加,吸收峰和荧光发射峰明显红移.通过对量子点的调控,改变量子点中Cd与Zn的组分,可有效调控量子点的吸收带边,并在524～627 nm之间实现对CdxZn1-xSe量子点发射峰位的连续调控.利用量子点的可调色性,讨论了基于CdxZn1-xSe量子点多路发光的安全识别设计原理,这种新型的隐形防伪技术将有望应用于超市标签、安全系统和护照制作等领域.CdxZn1-xSe（0.4≤x≤1） quantum dots were prepared by a chemical transport method.The luminescence center of the quantum dots shifted to higher wavelengths monotonously with the increase of x.By changing the composition of the CdxZn1-xSe quantum dots,their optical band gap energy could be controlled and the emission peak could be tuned continuously in the range of 524—627 nm.The multicolor optical coding for engineering assays by coating different-colored quantum dots onto the anti-fake label was discussed,and the results indicate that a new security identification system can be created by CdxZn1-xSe alloyed quantum dots.The multiple luminescent CdxZn1-xSe quantum dots based anti-fake system can be applied to supermarket labeling,military security and object identification.

关 键 词：CdxZn1-xSe 量子点 发光 防伪 安全识别 

分 类 号：O614[理学—无机化学] O647[理学—化学]