基于面式-三(2-(4-三氟甲基苯基)吡啶)合铱配合物为发光中心的高效绿光有机电致发光器件

引用本文: 滕明瑜, 王铖铖, 荆一铭, 郑佑轩, 林晨. 基于面式-三(2-(4-三氟甲基苯基)吡啶)合铱配合物为发光中心的高效绿光有机电致发光器件[J]. 无机化学学报, 2013, 29(7): 1490-1496. doi: 10.3969/j.issn.1001-4861.2013.00.236 shu

Citation: TENG Ming-Yu, WANG Cheng-Cheng, JING Yi-Ming, ZHENG You-Xuan, LIN Chen. Efficient Green Organic Light-Emitting Diodes with fac-Tris(2-(4-trifluoromethylphenyl)pyridine)iridium Complex as Emitter[J]. Chinese Journal of Inorganic Chemistry, 2013, 29(7): 1490-1496. doi: 10.3969/j.issn.1001-4861.2013.00.236 shu

基于面式-三(2-(4-三氟甲基苯基)吡啶)合铱配合物为发光中心的高效绿光有机电致发光器件

基金项目:
国家自然科学基金(No.20971067) (No.20971067)

江苏省自然科学基金(No.BK2011551)资助项目。 (No.BK2011551)

摘要: 用经典的方法合成了面式-三(2-(4-三氟甲基苯基)吡啶)合铱配合物( fac-Ir(tfmppy)₃),并得到了其晶体结构。在CH₂Cl₂溶液中Ir(tfmppy)₃的发射光谱显示出了峰值位于525 nm的π→π^*跃迁吸收以及金属到配体电荷转移(MLCT)吸收,色坐标(CIE)为(0.31,0.62),量子效率计算为4.59%(以Ru(bpy)₃]Cl₂为参照)。以Ir(tfmppy)₃为发光中心,制备并研究了有机电致发光器件:ITO/TAPC (60 nm)/Ir(tfmppy)₃ (x%):mCP (30 nm)/TPBi (60 nm)/LiF (1 nm)/Al (100 nm)。4%掺杂浓度的器件在4 197 cd·m^-2的亮度下显示的最大电流效率为33.95 cd·A^-1,在12.7 V时的最大亮度为43 612 cd·m^-2,色坐标(CIE)为(0.31,0.61)。利用瞬态电致发光法(transient electroluminescence (TEL))、在1 300 (V·cm^-1)^1/2的电场强度下Ir(tfmppy)₃配合物的电子迁移率测定为4.24×10^-6 cm²·(V·s)^-1。非常接近于常用的电子传输材料八羟基喹啉铝(Alq₃)的电子迁移率。

关键词:

铱配合物;4-三氟甲基苯联吡啶;电致磷光;有机电致发光;电子迁移率

English

Efficient Green Organic Light-Emitting Diodes with fac-Tris(2-(4-trifluoromethylphenyl)pyridine)iridium Complex as Emitter

1.
State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
Received Date: 24 December 2012
Fund Project:
国家自然科学基金(No.20971067)

江苏省自然科学基金(No.BK2011551)资助项目。

Abstract: fac-Tris(2-(4-trifluoromethylphenyl)pyridine)iridium (Ir(tfmppy)₃) was prepared by conventional method and its crystal structure was determined. Excitation at either π→π^* or MLCT absorption band of Ir(tfmppy)₃ in CH₂Cl₂ solution leads to the same MLCT emission maxima at 525 nm with Commission Internationale de L'Eclairage (CIE) coordinates of (0.31, 0.62) and the emission quantum yield is 4.59% in CH₂Cl₂ (by reference to an aerated aqueous solution of [Ru(bpy)₃]Cl₂ as the standard solution). Organic light-emitting diodes (OLEDs) based on the green electrophosphorescent complex in ITO/TAPC (1,1-bis [4-[N,N-di(p-tolyl)amino]phenyl]cyclohexane, 60 nm)/Ir(tfmppy)₃ (x%):mCP (1,3-bis (carbazol-9-yl)benzene, 30 nm)/TPBi (2,2',2"-(1,3,5-benzinetriyl)-tris(1-phenyl-1-H-benzimidazole, 60 nm)/LiF (1 nm)/Al (100 nm) were investigated. The device with 4% dopant concentration shows a maximum current efficiency of 33.95 cd·A^-1 at 4 197 cd·m^-2, a maximum brightness of 43 612 cd·m^-2 at 12.7 V, and CIE coordinates of (0.31, 0.61). The device with 6% dopant concentration exhibits a maximum power efficiency of 27.29 cd·A^-1 at 1 981 cd·m^-2, a maximum brightness of 33 071 cd·m^-2 at 9.6 V. The electron mobility of Ir(tfmppy)₃ is 4.24×10^-6 cm²·(V·s)^-1 under electric field of 1 300 (V·cm^-1)^1/2 via transient electroluminescence (TEL) method, which is close to that of Alq₃ (tri(8-hydroxyquinoline)aluminum) emitter. CCDC: 887658.

Key words:

iridium complex;2-(4-trifluoromethylphenyl)pyridine;electrophosphorescence;organic light-emitting diodes;electron mobility

1. [1] Tsuboyama A, Iwawaki H, Furugori M, et al. J. Am Chem. Soc., 2003,125:12971-12979[1] Tsuboyama A, Iwawaki H, Furugori M, et al. J. Am Chem. Soc., 2003,125:12971-12979
2. [2] Okada S, Okinaka K, Iwawaki H, et al. Dalton Trans., 2005, 9:1583-1590[2] Okada S, Okinaka K, Iwawaki H, et al. Dalton Trans., 2005, 9:1583-1590
3. [3] Baldo M A, Lamansky S, Burrows P E, et al. Appl. Phys. Lett., 1999,75:4-5[3] Baldo M A, Lamansky S, Burrows P E, et al. Appl. Phys. Lett., 1999,75:4-5
4. [4] Holmes R J, Forrest S R, Tung Y J, et al. Appl. Phys. Lett., 2003,82:2422-2423[4] Holmes R J, Forrest S R, Tung Y J, et al. Appl. Phys. Lett., 2003,82:2422-2423
5. [5] Tokito S, Iijima T, Suzuri Y, et al. Appl. Phys. Lett., 2003, 83:569-570[5] Tokito S, Iijima T, Suzuri Y, et al. Appl. Phys. Lett., 2003, 83:569-570
6. [6] Adachi C, Baldo M, Thompson M E, et al. J. Appl. Phys., 2001,90:5048-5051[6] Adachi C, Baldo M, Thompson M E, et al. J. Appl. Phys., 2001,90:5048-5051
7. [7] Kawamura Y, Goushi K, Brooks J, et al. Appl. Phys. Lett., 2005,86:071104-071105[7] Kawamura Y, Goushi K, Brooks J, et al. Appl. Phys. Lett., 2005,86:071104-071105
8. [8] Li J, Djurovich P I, Alleyne B D, et al. Inorg. Chem., 2005, 44:1713-1727[8] Li J, Djurovich P I, Alleyne B D, et al. Inorg. Chem., 2005, 44:1713-1727
9. [9] Zhou G J, Wong W Y, Yao B, et al. Angew. Chem. Int. Ed., 2007,46:1149-1151[9] Zhou G J, Wong W Y, Yao B, et al. Angew. Chem. Int. Ed., 2007,46:1149-1151
10. [10] Lyu Y Y, Byun Y, Kwon O, et al. J. Phys. Chem. B, 2006, 110:10303-10314[10] Lyu Y Y, Byun Y, Kwon O, et al. J. Phys. Chem. B, 2006, 110:10303-10314
11. [11] Chang C F, Cheng Y M, Chi Y, et al. Angew. Chem. Int. Ed., 2008,47:4542-4545[11] Chang C F, Cheng Y M, Chi Y, et al. Angew. Chem. Int. Ed., 2008,47:4542-4545
12. [12] Ho C L, Wong W Y, Wang Q, et al. Adv. Funct. Mater., 2008,18:928-937[12] Ho C L, Wong W Y, Wang Q, et al. Adv. Funct. Mater., 2008,18:928-937
13. [13] Sasabe H, Takamatsu J, Motoyama T, et al. Adv. Mater., 2010,22:5003-5007[13] Sasabe H, Takamatsu J, Motoyama T, et al. Adv. Mater., 2010,22:5003-5007
14. [14] King K A, Spellane P J, Watts R J, J. Am. Chem. Soc., 1985,107:1431-1432[14] King K A, Spellane P J, Watts R J, J. Am. Chem. Soc., 1985,107:1431-1432
15. [15] Lamansky S, Djurovich P, Murphy D, et al. J. Am. Chem. Soc., 2001,123:4304-4312[15] Lamansky S, Djurovich P, Murphy D, et al. J. Am. Chem. Soc., 2001,123:4304-4312
16. [16] King K A, Spellane P J, Watts R J, J. Am. Chem. Soc., 1985,107:1431-1432[16] King K A, Spellane P J, Watts R J, J. Am. Chem. Soc., 1985,107:1431-1432
17. [17] Adachi C, Baldo M A, Forest S R, et al. Appl. Phys. Lett., 2000,78:170-171[17] Adachi C, Baldo M A, Forest S R, et al. Appl. Phys. Lett., 2000,78:170-171
18. [18] Tanaka D, Sasabe H, Li Y J, et al. Jpn. J. Appl. Phys., 2007,46:L10-L12[18] Tanaka D, Sasabe H, Li Y J, et al. Jpn. J. Appl. Phys., 2007,46:L10-L12
19. [19] Zhu M R, Ye T L, He X, et al. J. Mater. Chem., 2011,21: 9326-9329[19] Zhu M R, Ye T L, He X, et al. J. Mater. Chem., 2011,21: 9326-9329
20. [20] Chou H H, Cheng C H, Adv. Mater., 2010,22:2468-2471[20] Chou H H, Cheng C H, Adv. Mater., 2010,22:2468-2471
21. [21] Dedeian K, Djurovich P I, Garces F O, et al. Inorg. Chem., 1991,30:1865-1867[21] Dedeian K, Djurovich P I, Garces F O, et al. Inorg. Chem., 1991,30:1865-1867
22. [22] Sykes D, Tidmarsh I S, Barbieri A, et al. Inorg. Chem., 2011,50:11323-11339[22] Sykes D, Tidmarsh I S, Barbieri A, et al. Inorg. Chem., 2011,50:11323-11339
23. [23] Yu Z T, Yuan Y J, Cai J G, et al. Chem. Eur. J., 2013,19: 1303-1310[23] Yu Z T, Yuan Y J, Cai J G, et al. Chem. Eur. J., 2013,19: 1303-1310
24. [24] Zhu Y C, Zhou L, Li H Y, et al. Adv. Mater., 2011,23:4041-4046[24] Zhu Y C, Zhou L, Li H Y, et al. Adv. Mater., 2011,23:4041-4046
25. [25] Li H Y, Zhou L, Teng M Y, et al. J. Mater. Chem. C, 2013, 1:560-565[25] Li H Y, Zhou L, Teng M Y, et al. J. Mater. Chem. C, 2013, 1:560-565
26. [26] Wang Y, Herron N, Grushin V V, et al. Appl. Phys. Lett., 2001,79:449-450[26] Wang Y, Herron N, Grushin V V, et al. Appl. Phys. Lett., 2001,79:449-450
27. [27] Hung L S, Chen C H. Mater. Sci. Eng. R., 2002,39:143-222[27] Hung L S, Chen C H. Mater. Sci. Eng. R., 2002,39:143-222
28. [28] Chan I M, Cheng W C, Hong F C. Appl. Phys. Lett., 2002, 80:13-14[28] Chan I M, Cheng W C, Hong F C. Appl. Phys. Lett., 2002, 80:13-14
29. [29] Wu M F, Yeh S J, Chen C T, et al. Adv. Funct. Mater., 2007,17:1887-1895[29] Wu M F, Yeh S J, Chen C T, et al. Adv. Funct. Mater., 2007,17:1887-1895
30. [30] Baldo M A, O'Brien D F, You Y, et al. Nature, 1998,395: 151-154[30] Baldo M A, O'Brien D F, You Y, et al. Nature, 1998,395: 151-154
31. [31] Baldo M A, Adachi C, Forrest S R. Phys. Rev. B, 2000,62: 10967-10977[31] Baldo M A, Adachi C, Forrest S R. Phys. Rev. B, 2000,62: 10967-10977
32. [32] Baldo M A, O'Brien D F, Thompson M E, et al. Phys. Rev. B, 1999,60:14422-14428[32] Baldo M A, O'Brien D F, Thompson M E, et al. Phys. Rev. B, 1999,60:14422-14428
33. [33] Kalinowski J, Stampor W, Me-zyk J, et al. Phys. Rev. B, 2002,66:235321-235335[33] Kalinowski J, Stampor W, Me-zyk J, et al. Phys. Rev. B, 2002,66:235321-235335
34. [34] Teng M Y, Zhang S, Jiang S W, et al. Appl. Phys. Lett., 2012,100:073303-073305[34] Teng M Y, Zhang S, Jiang S W, et al. Appl. Phys. Lett., 2012,100:073303-073305
35. [35] Scher H, Montroll E W. Phys. Rev. B, 1975,12:2455-2477[35] Scher H, Montroll E W. Phys. Rev. B, 1975,12:2455-2477
36. [36] Lee J, Chopra N, Eom S H, et al. Appl. Phys. Lett., 2008, 93:123306-123308[36] Lee J, Chopra N, Eom S H, et al. Appl. Phys. Lett., 2008, 93:123306-123308

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

基于面式-三(2-(4-三氟甲基苯基)吡啶)合铱配合物为发光中心的高效绿光有机电致发光器件

English

Efficient Green Organic Light-Emitting Diodes with fac-Tris(2-(4-trifluoromethylphenyl)pyridine)iridium Complex as Emitter

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

基于面式-三(2-(4-三氟甲基苯基)吡啶)合铱配合物为发光中心的高效绿光有机电致发光器件

English

Efficient Green Organic Light-Emitting Diodes with fac-Tris(2-(4-trifluoromethylphenyl)pyridine)iridium Complex as Emitter

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

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