Delayed Luminescence Spectroscopy of Organic Photovoltaic Binary Blend Films: Probing the Emissive Non-geminate Charge Recombination

被引：23

作者：

Keivanidis, Panagiotis E. ^{[1
]}

Kamm, Valentin ^{[2
]}

Dyer-Smith, Clare ^{[1
,3
,4
]}

Zhang, Weimin ^{[3
]}

Laquai, Frederic ^{[2
]}

McCulloch, Iain ^{[3
]}

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

Nelson, Jenny ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Phys, Ctr Plast Elect, London SW7 2AZ, England

[2] Max Planck Inst Polymer Res, Max Planck Res Grp Organ Optoelect, D-55128 Mainz, Germany

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

[4] Univ London Imperial Coll Sci Technol & Med, Grantham Inst Climate Change, London SW7 2AZ, England

来源：

ADVANCED MATERIALS | 2010年 / 22卷 / 45期

基金：

英国工程与自然科学研究理事会;

关键词：

SOLAR-CELLS; PHOTOPHYSICAL PROPERTIES; CONJUGATED POLYMER; PAIR RECOMBINATION; EXCIPLEX FORMATION; COMPOSITE FILM; DISSOCIATION; MORPHOLOGY; EFFICIENCY; DYNAMICS;

D O I：

10.1002/adma.201002389

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Organic photovoltaics: Following the direct photoexcitation of the low-energy optical gap PDI component in the F8BT:PDI photovoltaic blend film (step 1), charge generation takes place (steps 2, 3). Non-geminate charge recombination (step 4) results in the generation of delayed luminescence (DL) in the mu s time scale (step 5). The DL spectrum originates from an equilibrated charge-transfer (CT) state formed between the components of the composite. The F8BT-PDI CT complex has a ground state character (step 6).

引用

页码：5183 / +

页数：6

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