光学学报, 2020, 40 (6): 0623001, 网络出版: 2020-03-06
利用B3PyPPM∶Cs改善磷光有机电致发光器件性能 下载: 871次
Performance Improvement of Phosphorescent Organic Light-Emitting Devices Using B3PyPPM∶Cs
光学器件 发光二极管 有机电致发光器件 N掺杂 性能 电导率 optical devices light-emitting diode organic light-emitting device N-doping performance conductivity
摘要
以Cs为N掺杂剂,B3PyPPM为电子传输层材料,制备绿色磷光有机电致发光器件。实验证明,N掺杂不仅提高了器件效率,而且缓解了器件的效率滚降。为了研究N掺杂器件性能改善的原因,进行了朗伯体、开路电压、电导率测试。实验证明,Cs掺杂器件能够提高电导率,促进电子的注入与传输,使更多的电子能够与空穴复合形成激子,从而提高器件的性能,缓解效率滚降。
Abstract
In this work, Cs was used as the N-dopant and B3PyPPM was used as the electron transport layer material to prepare a green phosphorescent organic light-emitting device. Experiments show that N-doping improves device efficiency and alleviates the efficiency roll-off of the device. In order to investigate the reasons for the performance improvement of N-doped devices, tests of Lambertian, open-circuit voltage, and conductivity were conducted. Experiments confirm that Cs-doped devices can improve conductivity and promote the injection and transmission of electrons, so more electrons can recombine with holes to form excitons, the device performance is improved and the efficiency roll-off is alleviated.
林雯嫣, 陈宁, 林宝卿, 吴志军, 凌朝东. 利用B3PyPPM∶Cs改善磷光有机电致发光器件性能[J]. 光学学报, 2020, 40(6): 0623001. Wenyan Lin, Ning Chen, Baoqing Lin, Zhijun Wu, Chaodong Ling. Performance Improvement of Phosphorescent Organic Light-Emitting Devices Using B3PyPPM∶Cs[J]. Acta Optica Sinica, 2020, 40(6): 0623001.