Ultrapure Blue Phosphorescent Organic Light-Emitting Diodes Employing a Twisted Pt(II) Complex

被引：24
作者：
Chen, Yumeng [1 ,2 ]
Qian, Chunyue [1 ,2 ]
Qin, Ke [1 ,2 ]
Li, Hongbo [3 ]
Shi, Xiaobo [4 ]
Lu, Zhenzhong [1 ,2 ]
Ma, Huili [1 ,2 ]
Qin, Tianshi [1 ,2 ]
Hang, Xiao-Chun [1 ,2 ]
Huang, Wei [1 ,2 ,5 ,6 ]
机构：
[1] Nanjing Tech Univ NanjingTech, Key Lab Flexible Elect KLOFE, Nanjing 211816, Peoples R China
[2] Nanjing Tech Univ NanjingTech, Inst Adv Mat IAM, Nanjing 211816, Peoples R China
[3] Sinopec, Beijing Res Inst Chem Ind, Yanshan Branch, Beijing 102500, Peoples R China
[4] Jiangsu JITRI Organ Optoelect Technol Co Ltd, Suzhou 215215, Jiangsu, Peoples R China
[5] Northwestern Polytech Univ, Frontiers Sci Ctr Flexible Elect FSCFE, Xian 710072, Peoples R China
[6] Northwestern Polytech Univ, Shaanxi Inst Flexible Elect SIFE, Xian 710072, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2021年 / 13卷 / 44期
基金：
中国国家自然科学基金;
关键词：
blue emission; tetradentate ligand; twisted Pt(II) complex; phosphorescent OLEDs; top-emitting device; EFFICIENCY; TETRADENTATE; BRIGHT; OLEDS; BAND;
D O I：
10.1021/acsami.1c13843
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Described herein is a stable complex, Pt(mpzpyOczpy-mesi), embodying efficient, narrow blue emission. The highly twisted structure of the complex improves the stability and efficiency of photo- and electroluminescence by reducing the intermolecular interactions. The complex in solution shows high photoluminescence efficiency (>95%) and radiative decay rate (K-r = 2.9 x 10(5) s(-1)) with a narrow emission spectrum. The bottom-emitting phosphorescent device, BE1, exhibits durable deep blue emission with CIE coordinates of (0.145, 0.166) and 5.2 h of LT50 at an initial luminance of 685 cd/m(2). Top-emitting devices, TE1 and TE2, achieve ultrapure blue color with CIEx,y values of (0.141, 0.068) and (0.140, 0.071), respectively. TE4 shows high brightness of 3405 cd m(-2) at 50 mA m(-2), EQE of 10.2% at 1000 cd/m(2), and almost negligible color deviation around (0.135, 0.096) at viewing angles of 0 degrees-60 degrees.
引用
收藏
页码：52833 / 52839
页数：7
相关论文
共 41 条
[1]   Bright, saturated, red-to-yellow organic light-emitting devices based on polarization-induced spectral shifts [J].
Bulovic, V ;
Shoustikov, A ;
Baldo, MA ;
Bose, E ;
Kozlov, VG ;
Thompson, ME ;
Forrest, SR .
CHEMICAL PHYSICS LETTERS, 1998, 287 (3-4) :455-460
[2]   Recent Developments in Top-Emitting Organic Light-Emitting Diodes [J].
Chen, Shufen ;
Deng, Lingling ;
Xie, Jun ;
Peng, Ling ;
Xie, Linghai ;
Fan, Quli ;
Huang, Wei .
ADVANCED MATERIALS, 2010, 22 (46) :5227-5239
[3]   Single-Molecular White-Light Emitters and Their Potential WOLED Applications [J].
Chen, Zhao ;
Ho, Cheuk-Lam ;
Wang, Liqi ;
Wong, Wai-Yeung .
ADVANCED MATERIALS, 2020, 32 (11)
[4]   Triplet emitter doped exciton harvesting layer for improved efficiency and long lifetime in blue phosphorescent organic light-emitting diodes [J].
Choi, Jeong Min ;
Lee, Jun Yeob .
SYNTHETIC METALS, 2016, 220 :573-577
[5]   Controlling emission energy, self-quenching, and excimer formation in highly luminescent N∧C∧N-coordinated platinum(II) complexes [J].
Farley, SJ ;
Rochester, DL ;
Thompson, AL ;
Howard, JAK ;
Williams, JAG .
INORGANIC CHEMISTRY, 2005, 44 (26) :9690-9703
[6]   Tuning State Energies for Narrow Blue Emission in Tetradentate Pyridyl-Carbazole Platinum Complexes [J].
Fleetham, Tyler ;
Golden, Jessica H. ;
Idris, Muazzam ;
Hau, Han-Ming ;
Ravinson, Daniel Sylvinson Muthiah ;
Djurovich, Peter I. ;
Thompson, Mark E. .
INORGANIC CHEMISTRY, 2019, 58 (18) :12348-12357
[7]   Improved out-coupling efficiency from a green microcavity OLED with a narrow band emission source [J].
Fleetham, Tyler ;
Ecton, Jeremy ;
Li, Guijie ;
Li, Jian .
ORGANIC ELECTRONICS, 2016, 37 :141-147
[8]   Efficient "Pure" Blue OLEDs Employing Tetradentate Pt Complexes with a Narrow Spectral Bandwidth [J].
Fleetham, Tyler ;
Li, Guijie ;
Wen, Lele ;
Li, Jian .
ADVANCED MATERIALS, 2014, 26 (41) :7116-+
[9]   Tetradentate Pt(II) Complexes with 6-Membered Chelate Rings: A New Route for Stable and Efficient Blue Organic Light Emitting Diodes [J].
Fleetham, Tyler B. ;
Huang, Liang ;
Klimes, Kody ;
Brooks, Jason ;
Li, Jian .
CHEMISTRY OF MATERIALS, 2016, 28 (10) :3276-3282
[10]   Plasmonic enhancement of stability and brightness in organic light-emitting devices [J].
Fusella, Michael A. ;
Saramak, Renata ;
Bushati, Rezlind ;
Menon, Vinod M. ;
Weaver, Michael S. ;
Thompson, Nicholas J. ;
Brown, Julia J. .
NATURE, 2020, 585 (7825) :379-+
12345