Formation of relaxed charge-transfer excitons in donor-acceptor-type polymer solar cells

被引：8

作者：

Tsutsumi, Jun'ya ^{[1
]}

Matsuzaki, Hiroyuki ^{[1
]}

Kanai, Naoyuki ^{[2
]}

Yamada, Toshikazu ^{[1
]}

Hasegawa, Tatsuo ^{[1
,3
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058562, Japan

[2] Fuji Elect Co Ltd, Hino, Tokyo 1918502, Japan

[3] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2014年 / 53卷 / 05期

基金：

日本学术振兴会;

关键词：

PERFORMANCE; SEPARATION; EFFICIENCY; ENERGY; STATES;

D O I：

10.7567/JJAP.53.05HB12

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The formation of relaxed charge-transfer (CT) excitons and its effect on photocarrier generation in a series of donor-acceptor (DA)-type polymers were examined with a focus on the two unique absorption bands that originate from low-energy charge-transfer (CT) and high-energy main-chain (MC) excitations, respectively. The photoluminescence in response to the CT excitation demonstrated Stokes shift, which is a clear evidence of the formation of bound CT excitons associated with a strong lattice relaxation. Results indicate that photocarriers are generated indirectly by CT excitation through the formation of bound electron-hole pairs, the binding energy and lifetime of which correlate with the donor-acceptor CT degree in the DA-type polymers. (C) 2014 The Japan Society of Applied Physics

引用

页数：5

共 23 条

[11] Failure of time-dependent density functional theory for long-range charge-transfer excited states: The zincbacteriochlorin-bacterlochlorin and bacteriochlorophyll-spheroidene complexes [J].

Dreuw, A ;

Head-Gordon, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (12) :4007-4016

[12]

He ZC, 2012, NAT PHOTONICS, V6, P591, DOI [10.1038/nphoton.2012.190, 10.1038/NPHOTON.2012.190]

[13] TD-DFT performance for the visible absorption spectra of organic dyes: Conventional versus long-range hybrids [J].

Jacquemin, Denis ;

Perpete, Eric A. ;

Scuseria, Gustavo E. ;

Ciofini, Ilaria ;

Adamo, Carlo .

JOURNAL OF CHEMICAL THEORY AND COMPUTATION, 2008, 4 (01) :123-135

[14] For the Bright Future-Bulk Heterojunction Polymer Solar Cells with Power Conversion Efficiency of 7.4% [J].

Liang, Yongye ;

Xu, Zheng ;

Xia, Jiangbin ;

Tsai, Szu-Ting ;

Wu, Yue ;

Li, Gang ;

Ray, Claire ;

Yu, Luping .

ADVANCED MATERIALS, 2010, 22 (20) :E135-+

[15] Thermally stable, efficient polymer solar cells with nanoscale control of the interpenetrating network morphology [J].

Ma, WL ;

Yang, CY ;

Gong, X ;

Lee, K ;

Heeger, AJ .

ADVANCED FUNCTIONAL MATERIALS, 2005, 15 (10) :1617-1622

[16] ELECTRON-TRANSFER REACTIONS IN CHEMISTRY - THEORY AND EXPERIMENT [J].

MARCUS, RA .

REVIEWS OF MODERN PHYSICS, 1993, 65 (03) :599-610

[17] High photovoltaic performance of a low-bandgap polymer [J].

Muehlbacher, David ;

Scharber, Markus ;

Morana, Mauro ;

Zhu, Zhengguo ;

Waller, David ;

Gaudiana, Russel ;

Brabec, Christoph .

ADVANCED MATERIALS, 2006, 18 (21) :2884-+

[18] Synthesis, Characterization, and Transistor and Solar Cell Applications of a Naphthobisthiadiazole-Based Semiconducting Polymer [J].

Osaka, Itaru ;

Shimawaki, Masafumi ;

Mori, Hiroki ;

Doi, Iori ;

Miyazaki, Eigo ;

Koganezawa, Tomoyuki ;

Takimiya, Kazuo .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (07) :3498-3507

[19] Bulk heterojunction solar cells with internal quantum efficiency approaching 100% [J].

Park, Sung Heum ;

Roy, Anshuman ;

Beaupre, Serge ;

Cho, Shinuk ;

Coates, Nelson ;

Moon, Ji Sun ;

Moses, Daniel ;

Leclerc, Mario ;

Lee, Kwanghee ;

Heeger, Alan J. .

NATURE PHOTONICS, 2009, 3 (05) :297-U5

[20] A quantum-chemical perspective into low optical-gap polymers for highly-efficient organic solar cells [J].

Risko, Chad ;

McGehee, Michael D. ;

Bredas, Jean-Luc .

CHEMICAL SCIENCE, 2011, 2 (07) :1200-1218

← 1 2 3 →