Tracing charge transfer states in polymer:fullerene bulk-heterojunctions

被引：8
|
作者：
Manca, Marianna [1 ]
Piliego, Claudia [1 ]
Wang, Ergang [2 ]
Andersson, Mats R. [2 ]
Mura, Andrea [1 ,3 ]
Loi, Maria A. [1 ]
机构：
[1] Univ Groningen, Zernike Inst Adv Mat, NL-9747 AG Groningen, Netherlands
[2] Chalmers, Dept Chem & Biol Engn Polymer Technol, SE-41296 Gothenburg, Sweden
[3] Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, CA, Italy
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 25期
基金：
瑞典研究理事会;
关键词：
POLYMER SOLAR-CELLS; PHOTOINDUCED ELECTRON-TRANSFER; OPEN-CIRCUIT VOLTAGE; TRANSFER EXCITONS; POLYFLUORENE COPOLYMER; DISSOCIATION; RECOMBINATION; PERFORMANCE; EFFICIENCY; ORIGIN;
D O I：
10.1039/c3ta11005b
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：
Charge transfer state emission in organic bulk-heterojunctions has been demonstrated to be an important loss mechanism for this reason a better understanding of the nature and origin of the charge transfer state is fundamental for the improvement of organic solar cells. Here, the relationship between photophysical and morphological features of a prototypical organic bulk-heterojunction is investigated in blends with different donor-acceptor ratios. By correlating imaging with photoluminescence spectra measured in different areas of the blends, the charge transfer state emission is unambiguously assigned to microscopical regions in which the intermixing of the two organic semiconductors is higher.
引用
收藏
页码：7321 / 7325
页数：5
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