Stabilization of semiconducting polymers with silsesquioxane

被引：210

作者：

Xiao, S ^{[1
]}

Nguyen, M

Gong, X

Cao, Y

Wu, HB

Moses, D

Heeger, AJ

机构：

[1] Amer Dye Source Inc, Baie Urfe, PQ H9X 3T6, Canada

[2] Univ Calif Santa Barbara, Inst Polymers & Organ Solids, Santa Barbara, CA 93106 USA

[3] S China Univ Technol, Coll Mat Sci, Guangzhou 510640, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2003年 / 13卷 / 01期

关键词：

D O I：

10.1002/adfm.200390000

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Polyhedral oligomeric silsesquioxanes (POSS) anchored to poly(2-methoxy-5-(2-ethylhexyloxy)-1.4-phenylenevinylene) (MEH-PPV) (MEH-PPV-POSS), and to poly(9,9-dihexylfluorenyl-2,7-diyl) (PFO) (PFO-POSS) were synthesized. Compared with the corresponding parent polymers, MEH-PPV and PFO, MEH-PPV-POSS and PFO-POSS have better thermal stability. MEH-PPV-POSS and MEH-PPV have identical absorption and photoluminescent (PL) spectra, both in solution and as thin films. They also have identical electroluminescent (EL) spectra. Devices made from MEH-PPV-POSS exhibit higher brightness (1320 cd m(-2) at 3.5 V) and higher external quantum efficiency (eta(ext) = 2.2 % photons per electron) compared to MEH-PPV (230 cd m(-2) at 3.5 V and eta(ext) = 1.5 % ph el(-1)). Compared with PFO in the same device configuration, PFO-POSS has improved blue EL emission and higher eta(ext).

引用

页码：25 / 29

页数：5

共 38 条

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