ZnO与银纳米颗粒表面等离子体耦合发光研究  

Photoluminescence Enhancement of ZnO Film by the Surface Plasmons of Ag Nanoparticles

作　　者：李芳[1,2] 任峰[1,2] 肖湘衡[1,2] 蔡光旭[1,2] 张兰月[1,2] 蒋昌忠[1,2] 

机构地区：[1]武汉大学声光材料与器件教育部重点实验室,武汉430072 [2]武汉大学物理科学与技术学院,武汉430072

出　　处：《武汉理工大学学报》2008年第11期1-4,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(10775109);武汉市科技攻关项目(200810321147);教育部博士点基金(20070486069);武汉市晨光计划(200850731371)

摘　　要：将Ag离子注入到石英玻璃中形成Ag纳米颗粒并退火,用脉冲激光沉积法(PLD)在样品表面沉积ZnO薄膜,通过改变Ag纳米颗粒表面等离子体共振吸收强度,研究Ag纳米颗粒表面等离子体与ZnO薄膜的激子耦合效应。PL谱实验结果表明:Ag纳米颗粒与ZnO发生强烈的耦合使ZnO的发光增强,增强效果随Ag纳米颗粒等离子体的增强而增大,另一方面发光峰位发生红移,出现双峰现象。最后对耦合效应产生的机制进行了探讨。Ag ions were implanted into amorphous silica by metal vapor vacuum arc ion source （MEVVA） ion implantor at dose of 5 × 10^16 ions/cm^2 and 1 × 10^17ions/cm^2, The implanted sample were annealed at reducing atmosphere at 500℃ for one hour. ZnO films then were deposited on the surface of the samples by pulsed laser deposition （PLD） method. By changing the intensity of the surface plasmons resonance of Ag nanopartieles, the interaction between Ag nanoparticles and the ZnO films was researched. Photoluminescense spectra reveal that there is great enhancement of PL due to the coupling between nanoparticles and ZnO. The redshift of PL are observed.

关 键 词：氧化锌 离子注入 光致发光 纳米颗粒 

分 类 号：O484.1[理学—固体物理]