The Effect of Ionization Potential and Film Morphology on Exciplex Formation and Charge Generation in Blends of Polyfluorene Polymers and Silole Derivatives

被引：16

作者：

Dyer-Smith, Clare ^{[1
,2
]}

Benson-Smith, Jessica J. ^{[3
]}

Bradley, Donal D. C. ^{[1
]}

Murata, Hideyuki ^{[4
]}

Mitchell, William J. ^{[5
]}

Shaheen, Sean E. ^{[6
]}

Haque, Saif A. ^{[2
]}

Nelson, Jenny ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2BW, England

[2] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England

[3] Plextron Inc, Pittsburgh, PA 15238 USA

[4] Japan Adv Inst Sci & Technol, Sch Mat Sci, Dept Phys Mat Sci Composite Mat, Nomi, Ishikawa 9231292, Japan

[5] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA

[6] Merck Chem Ltd, Southampton SO16 7QD, Hants, England

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 32期

基金：

英国工程与自然科学研究理事会;

关键词：

LIGHT-EMITTING-DIODES; PHOTOINDUCED ELECTRON-TRANSFER; HETEROJUNCTION SOLAR-CELLS; ENERGY-TRANSFER; PERFORMANCE; TRANSPORT; EMISSION; SEMICONDUCTOR; ABSORPTION; DEPENDENCE;

D O I：

10.1021/jp9020307

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Long-lived emission from an exciplex state is observed in a series of blend films of polyfluorene-triarylamine copolymers with silole derivatives. The energy of the exciplex emission is found to con-elate with the energy offset between the frontier orbitals of donor and acceptor, whereas the yield of the exciplex is more strongly influenced by blend film morphology. Charge separation occurs in these films, and the external quantum efficiency of photovoltaic devices is found to depend upon both the energetics and the morphology of the blend film.

引用

页码：14533 / 14539

页数：7

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