| 利用磷光敏化改善聚合物白光OLED性能 |
| |
| 引用本文： | 林文晶,苏文明,张东煜,周禾丰,王华.利用磷光敏化改善聚合物白光OLED性能[J].发光学报,2012,33(4):440-443. |
| |
| 作者姓名： | 林文晶 苏文明 张东煜 周禾丰 王华 |
| |
| 作者单位： | 1. 太原理工大学 新材料界面科学与工程教育部重点实验室, 山西 太原 030024;
2. 中国科学院 苏州纳米技术与纳米仿生研究所, 江苏 苏州 215123;
3. 太原理工大学 新材料工程技术研究中心, 山西 太原 030024 |
| |
| 基金项目： | 国家自然科学基金(21071108,60976018,21101111,11004218);教育部长江学者与创新团队发展计划项目(IRT0972);山西省自然科学基金(2008011008,2010021023-2);江苏省工业支撑项目(BE2009050)资助 |
| |
| 摘 要： | 基于新型聚合物白光材料PF-DTFO制备了一种聚合物白光发光二极管(PWOLED),通过在聚合物发光层中掺杂蓝光磷光染料FIrpic,利用磷光敏化发光原理,改善器件电致发光性能。在敏化PWOLED中,掺杂的FIrpic染料作为给体将产生的三重态能量传递给白光聚合物的长波发射基团,进一步提高了长波基团的发光强度,改善了白光光谱,使基色更平衡并且光谱更稳定。驱动电压从8 V增加到16 V时,器件电致发光光谱基本不变,色坐标仅从(0.33,0.38)移动至(0.32,0.38)。敏化后的器件发光效率相对于未掺杂器件提高了38%。
|
| 关 键 词： | 聚合物 有机发光二极管 磷光敏化 |
| 收稿时间： | 2012/2/5 |
Properties Improvement of Polymer White Organic Light Emitting Devices by Phosphorescence Sensitizer |
| |
| LIN Wen-Jing,SU Wen-ming,ZHANG Dong-Yu,ZHOU He-feng,WANG Hua.Properties Improvement of Polymer White Organic Light Emitting Devices by Phosphorescence Sensitizer[J].Chinese Journal of Luminescence,2012,33(4):440-443. |
| |
| Authors: | LIN Wen-Jing SU Wen-ming ZHANG Dong-Yu ZHOU He-feng WANG Hua |
| |
| Institution: | 1. Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China;
2. Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), CAS, Suzhou 215123, China;
3. Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China |
| |
| Abstract: | Based on a new polymer of PF-DTFO,the novel polymer white light-emitting diode(PWOLED) was introduced with the structure of ITO/PEDOT∶PSS/PF-DTFO/LiF/Al.Because of its excess blue emission,the modified PWOLEDs were developed by doping phosphorescence dye of FIrpic in emission layer.In the PWOLEDs,triplet excitons’ energy can transfer from FIrpic to long-wave emissive groups of PF-DTFO,which lead to an increased long-wave emission intensity.By using this phosphorescence sensitizer layer,both singlet and triplet excitons can be effectively employed,and the performance of the PWOLED was improved.The PWOLED shows a little change of CIE coordinate,which ranges from(0.33,0.38) to(0.32,0.38) as the driving voltage increased from 8 V to 16 V.Meanwhile,the device shows about 38% enhanced efficiency compared to that of unoptimized PWOLED. |
| |
| Keywords: | polymer OLED phosphorescence sensitizer |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《发光学报》浏览原始摘要信息 |
| 点击此处可从《发光学报》下载免费的PDF全文 |
|
