Red Polymer Electrophosphorescent Devices Based on Iridium Complex with Reduced Self-quenching Effect

XU Mao-liang; AN Zhong-wei; WANG Ge-yang; ZHOU Rui; XIAO Qi; LI Ming-tao; LI Wen-lian; HONG Zi-ruo

doi:null

您当前的位置：

首页 >

文章列表页 >

Red Polymer Electrophosphorescent Devices Based on Iridium Complex with Reduced Self-quenching Effect

paper | 更新时间：2020-08-12

- Red Polymer Electrophosphorescent Devices Based on Iridium Complex with Reduced Self-quenching Effect
- Chinese Journal of Luminescence Vol. 32, Issue 11, Pages: 1181-1185(2011)
- 作者机构：
  
  1. 西安近代化学研究所, 陕西西安 710065
  2. 中国科学院长春光学精密机械与物理研究所,吉林长春,130022
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN383.1
- Received：16 August 2011，
  
  Revised：13 September 2011，
  
  Published Online：22 November 2011，
  
  Published：22 November 2011
- 稿件说明：
移动端阅览
徐茂梁, 安忠维, 王歌扬, 周瑞, 肖奇, 李明涛, 李文连, 洪自若. 具有减少自猝灭效果的铱配合物掺杂型红色聚合物磷光器件[J]. 发光学报, 2011,32(11): 1181-1185

XU Mao-liang, AN Zhong-wei, WANG Ge-yang, ZHOU Rui, XIAO Qi, LI Ming-tao, LI Wen-lian, HONG Zi-ruo. Red Polymer Electrophosphorescent Devices Based on Iridium Complex with Reduced Self-quenching Effect[J]. Chinese Journal of Luminescence, 2011,32(11): 1181-1185
徐茂梁, 安忠维, 王歌扬, 周瑞, 肖奇, 李明涛, 李文连, 洪自若. 具有减少自猝灭效果的铱配合物掺杂型红色聚合物磷光器件[J]. 发光学报, 2011,32(11): 1181-1185 DOI：

XU Mao-liang, AN Zhong-wei, WANG Ge-yang, ZHOU Rui, XIAO Qi, LI Ming-tao, LI Wen-lian, HONG Zi-ruo. Red Polymer Electrophosphorescent Devices Based on Iridium Complex with Reduced Self-quenching Effect[J]. Chinese Journal of Luminescence, 2011,32(11): 1181-1185 DOI：

摘要

将双(2-(2'-苯并噻吩基)-5-三氟甲基吡啶)乙酰丙酮合铱配合物及电子传输材料PBD掺杂到基质材料PVK中

利用旋涂的方法制备聚合物磷光器件。铱配合物的掺杂质量分数分别为8%、10%、15%及18%

当掺杂质量分数为15%时获得了最大外量子效率4.5%

而同样结构的经典的红光材料(btp)

Ir(acac)的掺杂质量分数为4%时最大外量子效率为3.3%。可以看出

含三氟甲基的新铱配合物制备的聚合物器件具有明显的减少浓度猝灭效果

这可能由于三氟甲基基团改变了分子堆积状态

减少了分子间相互作用的结果。该聚合物器件最大发射峰位648 nm

色坐标为(0.71

0.29)

没有PVK的蓝光发射峰。

Abstract

A highly efficient red-emitting phosphorescent polymer light-emitting diode (Ph-PLED) with a new iridium complex of bis(2-benzo thiophen-2-yl-5-trifluoromethyl-pyridinato-N

) iridium(Ⅲ) (acetylacetonate) using poly (n-vinylcarbazole) (PVK) as host material was demonstrated. The PLED offers a maximum external quantum efficiency of 4.5% with an emission peak of 648 nm. The CIE coordinates are (0.71

0.29) and independent from driving current density

indicating an efficient reduction of self-quenching effect at high doping concentrations.

关键词

Keywords

references

Kido J, Okuyama K, Nagai K. White light-emitting organic electroluminescent devices using the poly (N-vinylcarbazole) emitter layer doped with three fluorescent dyes [J]. Appl. Phys. Lett., 1994, 64 (7):815-817.[2] Kido J, Shionoya H, Nagai K. Single-layer white light-emitting organic electroluminescent devices based on dye-dispersed poly(N-vinylcarbazole) [J]. Appl. Phys. Lett., 1995, 67 (16):2281-2283.[3] Luo K J, Jiang S P, Wang X, et al. Efficient green phosphorescent polymer light-emitting diodes based on cyclometalated iridium complex [J]. Chin. J. Lumin. (发光学报), 2011, 32 (4):368-373 (in English).[4] Yang X D, Lee C L, Westenhoff S, et al. Saturation, relaxation, and dissociation of excited triplet excitons in conjugated polymers [J]. Adv. Mater., 2009, 21 (8):916-919.[5] Kido J, Kohda M, Okuyama K, et al. Organic electroluminescent devices based on molecularly doped polymers [J]. Appl. Phys. Lett., 1992, 61 (7):761-763.[6] Wu C, Sturn J C, Register R A, et al. Efficient organic electroluminescent devices using single-layer doped polymer thin films with bipolar carrier transport abilities [J]. IEEE Trans. Electron. Dev., 1997, 44 (8):1269-1281.[7] Lee C L, Lee K B, Kim J J. Polymer phosphorescent light-emitting devices doped with tris(2-phenylpyridine) iridium as a triplet emitter [J]. Appl. Phys. Lett., 2000, 77 (150):2280-2282.[8] O'Brien D F, Giebler C, Fletcher R B, et al. Electrophosphoresence from a doped polymer light emitting diode [J]. Synth. Met., 2001, 116 (1-3):379-383.[9] Lamansky S, Kwong R C, Nugent M, et al. Molecularly doped polymer light emitting diodes utilizing phosphorescent Pt(II) and IR(Ⅲ) dopants [J]. Organic Electronics, 2001, 2 (1):53-62.[10] Zhang X J, Xu Y H, Shi H H. Synthesis and phosphorescence of a new greenish-blue light-emitting iridium(Ⅲ)bis(1-phenylpyridine)(1,2,4-triazole pyridine) [J]. Chin. J. Lumin. (发光学报), 2007, 28 (1):44-48 (in Chinese).[11] Zhu W, Mo Y, Yuan M, et al. Highly efficient electrophosphorescent devices based on conjugated polymers doped with iridium complexes [J]. Appl. Phys. Lett., 2002, 80 (12):2045-2047.[12] Gong X, Ostrowski J C, Bazan G C, et al. Red electrophosphorescence from polymer doped with iridium complex [J]. Appl. Phys. Lett., 2002, 81 (20):3711-3713.[13] Xie H Z, Liu M W, Wang O Y, et al. Reduction of self-quenching effect in organic electrophosphorescence emitting devices via the use of sterically hindered spacers in phosphorescence molecules [J]. Adv. Mater., 2001, 13 (16):1245-1248.[14] Wang Y, Herron N, Grushin V V, et al. Highly efficient electroluminescent materials based on fluorinated organometallic iridium compounds [J]. Appl. Phys. Lett., 2001, 79 (4):449-451.[15] Xu M L, Li M T, Hong Z R, et al. Highly efficient red electrophosphorescent device based on an new iridium complex with trifluoromethyl-substituted 2-benzo thiophen-2-yl-pyridine ligand [J]. Opt Mater., 2006, 28 (8-9):1025-1028.[16] Forrest S R, Bradley D D C, Thompson M E. Measuring the efficiency of organic light-emitting devices [J]. Adv. Mater., 2003, 15 (13):1043-1048.[17] Suzuki H. Orientational enhancement in the electroluminescence of ionic emissive dyes doped in poly(vinylcarbazole) [J]. Thin Solid Films, 2001, 393 (1-2):352-357.[18] Hill I G, Kahn A. Organic semiconductor heterointerfaces containing bathocuproine [J]. J. Appl. Phys., 1999, 86 (8):4515-4519.[19] Kijima Y, Asai N, Tamura S. A blue organic light emitting diode [J]. Jpn. J. Appl. Phys., Part 1, 1999, 38 (9A):5274-5277.[20] Chen F C, Yang Y, Thompson M E, et al. High-performance polymer light-emitting diodes doped with a red phosphorescent iridium complex [J]. Appl. Phys. Lett., 2002, 80 (13):2308-2310.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

High efficiency Green Organic Light-emitting Diode Without Roll-off Under High Current Density

A New Iridium Complex with Trifluoromethyl-Substituted 2-benzo[b]thiophen-2-yl-pyridine Ligand and Its Application in OLEDs

Performance Enhancement by Modification of Cathode with a Thin LiF Layer in OELDs

Related Author

TIAN Miao-miao

HE Xiao-guang

QI Jin-gang

Wang Ning

XU Mao-liang

LI Wen-lian

LI Ming-tao

WANG Ge-yang

Related Institution

Physics College, Changchun Normal University

Luminous Centre of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University

Xi'an Modern Chemistry Research Institute

Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences

Department of Applied Physics Hunan University Changsha China

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176862 Email：fgxbt@126.com
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰