Coherence and Uncertainty in Nanostructured Organic Photovoltaics

被引：136

作者：

Kaake, Loren G. ^{[1
]}

Moses, Daniel ^{[1
]}

Heeger, Alan J. ^{[1
,2
,3
]}

机构：

[1] Univ Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[3] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2013年 / 4卷 / 14期

关键词：

EXCITON DISSOCIATION; CONJUGATED POLYMERS; CHARGE GENERATION; SINGLET FISSION; ENERGY-TRANSFER; DYNAMICS; RECOMBINATION; SPECTROSCOPY; FEMTOSECOND; ABSORPTION;

D O I：

10.1021/jz4010569

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：

The effects of fundamental uncertainty present a compelling rationale for a highly delocalized photoexcitation on ultrafast time scales. This delocalized photoexcitation enables an immediate probability of charge-transfer over distances compatible with the uncertainty principle. We perform transient absorption measurements on organic bulk heterojunction solar cells to investigate charge-transfer dynamics in a variety of materials. A startling generality emerges indicating that the majority of charge carriers are generated at times within the temporal resolution of our instrument (similar to 100 fs).

引用

页码：2264 / 2268

页数：5

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