Enhanced electroluminescence from a conjugated polymer/ionomer blend

被引：18

作者：

Kim, TH ^{[1
]}

Park, JH ^{[1
]}

Lee, TW ^{[1
]}

Park, OO ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Taejon 305701, South Korea

来源：

POLYMER | 2004年 / 45卷 / 25期

关键词：

luminescent efficiency; poly(sodium 4-styrenesulfonate) ionomer; dilution effect;

D O I：

10.1016/j.polymer.2004.10.008

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly [2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene] (MEH-PPV) and poly (sodium 4-styrenesulfonate) ionomer (PSS-ionomer) blends were used as emitting layers in polymer light-emitting diodes (LEDs). The polymers were blended in various ratios, and their luminescent properties were compared with those of a MEH-PPV/polystyrene (PS) blend system. The MEH-PPV/PSS-ionomer and MEH-PPV/PS devices showed a much higher luminescent efficiency when compared with pure polymer devices, due to the dilution effect. The MEH-PPV/PSS-ionomer blend device achieved a more enhanced luminescent efficiency as compared with that of the MEH-PPV/PS device, due to polar groups in the PSS-ionomer, which may enhance the electron injection from the cathode to the emitting molecules. In addition, the turn-on voltage of the MEH-PPV/PSS-ionomer based on LEDs was also dramatically decreased. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：8567 / 8571

页数：5

共 16 条

[1] VISIBLE-LIGHT EMISSION FROM SEMICONDUCTING POLYMER DIODES [J].

BRAUN, D ;

HEEGER, AJ .

APPLIED PHYSICS LETTERS, 1991, 58 (18) :1982-1984

[2] LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS [J].

BURROUGHES, JH ;

BRADLEY, DDC ;

BROWN, AR ;

MARKS, RN ;

MACKAY, K ;

FRIEND, RH ;

BURN, PL ;

HOLMES, AB .

NATURE, 1990, 347 (6293) :539-541

[3]

Eisenberg A., 1970, MACROMOLECULES, V3, P147, DOI DOI 10.1021/MA60014A006

[4]

Fukuda T, 1996, APPL PHYS LETT, V68, P2346, DOI 10.1063/1.115853

[5] Enhanced electroluminescence using polystyrene as a matrix [J].

He, GF ;

Li, YF ;

Liu, J ;

Yang, Y .

APPLIED PHYSICS LETTERS, 2002, 80 (22) :4247-4249

[6] Finite size effects on electroluminescence of nanoscale semiconducting polymer heterojunctions [J].

Jenekhe, SA ;

Zhang, XJ ;

Chen, XL ;

Choong, VE ;

Gao, YL ;

Hsieh, BR .

CHEMISTRY OF MATERIALS, 1997, 9 (02) :409-&

[7] Synthesis and properties of new electroluminescent polymers possessing both hole and electron-transporting units in the main chain [J].

Kim, SW ;

Shim, SC ;

Jung, BJ ;

Shim, HK .

POLYMER, 2002, 43 (15) :4297-4305

[8] Use of ionomer as an electron injecting and hole blocking material for polymer light-emitting diode [J].

Lee, HM ;

Choi, KH ;

Hwang, DH ;

Do, LM ;

Zyung, T ;

Lee, JW ;

Park, JK .

APPLIED PHYSICS LETTERS, 1998, 72 (19) :2382-2384

[9] Improvement of quantum efficiency in polymer light-emitting diodes by a single-ion conductor [J].

Lee, TW ;

Park, OO .

APPLIED PHYSICS LETTERS, 2000, 76 (22) :3161-3163

[10] Polymer light-emitting devices using ionomers as an electron injecting and hole blocking layer [J].

Lee, TW ;

Park, OO ;

Do, LM ;

Zyung, TY ;

Ahn, T ;

Shim, HK .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (05) :2128-2134

← 1 2 →