项目名称： 金属纳米粒子提高溶液加工型白光有机发光二极管性能及其新机制的研究

项目编号： No.61505086

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 邓玲玲

作者单位： 南京邮电大学

项目金额： 20万元

中文摘要： 溶液加工型白光有机发光二极管（WOLED）具有制备简单，低成本的优势，因此更适用产业化的要求，代表了WOLED的未来发展方向，但是目前器件性能尚有待提高。金属纳米粒子，因其具有的局域等离子共振效应和易于溶液加工成膜的制备特点，已被用于各类单色溶液加工型有机发光二极管（OLED）来提高器件内量子效率。但是由于对其作用机制的理解还不够全面和深入，导致目前基于金属纳米粒子的OLED器件性能普遍较差，这一点制约了金属纳米粒子在WOLED中的应用。. 本项目以金属纳米粒子等离子体共振增强蓝光为突破点，提高溶液加工型WOLED的效率，改善器件色度。系统性地研究金属纳米粒子在OLED中的光、电作用机制，重点研究器件结构和材料介电常数对等离子体共振的影响；创新性地研究金属纳米粒子与激子辐射倏逝波之间的相互作用，提出新的作用机制。对金属纳米粒子工作机制的深入研究有助于完善其在OLED中的应用

中文关键词： 白光OLED；溶液加工技术；金属纳米粒子；等离子体共振；倏逝波

英文摘要： Despite a lower performance to date, solution-processed white light-emitting diodes (WOLEDs) have attractive much attention and represent the future development direction of WOLEDs because of distinct advantages, such as easily fabrication, lower cost, and compatibility with large-area techniques. Metal nanoparticles, possessing local plasma resonance effect and compatibility with solution processing technology, have been introduced in solution-processed monochromatic organic light-emitting diodes (OLEDs) to enhance internal quantum efficiency. While performances of the reported metal nanoparticle based OLEDs were not satisfied, and the main reason is the working mechanism of metal nanoparticles has not been investigated comprehensively and deeply. Poor performances of metal nanoparticles in monochromatic OLEDs hampered its application in WOLEDs. . This project improves efficiency and chromaticity of solution-processed WOLEDs through utilizing plasma resonance on blue wave band induced by metal nanoparticles. Systematic research is made on the optical and electrical mechanism of metal nanoparticles, especially on the influence on the plasma resonance effect from device structures and materials. A new mechanism about the interaction between metal nanoparticles and evanescent waves emitted by excitons is proposed and studied. Deeply research on working mechanism of metal nanoparticles promotes its application in OLEDs.

英文关键词： White organic light-emitting diode;Solution-processed technology;Nanopaticle;Plasma Resonance;Evanescent wave