Nanomorphology of Bulk Heterojunction Organic Solar Cells in 2D and 3D Correlated to Photovoltaic Performance

被引：42

作者：

Barrau, Sophie ^{[1
,2
]}

Andersson, Viktor ^{[1
,2
]}

Zhang, Fengling ^{[1
,2
]}

Masich, Sergej ^{[3
]}

Bijleveld, Johan

Andersson, Mats R. ^{[4
]}

Inganas, Olle ^{[1
,2
]}

机构：

[1] Linkoping Univ, Dept Phys Chem & Biol, SE-58183 Linkoping, Sweden

[2] Linkoping Univ, COE, SE-58183 Linkoping, Sweden

[3] Karolinska Inst, Dept Cell & Mol Biol, S-17177 Stockholm, Sweden

[4] Chalmers Univ Technol, Dept Chem & Biol Engn Polymer Technol, SE-41296 Gothenburg, Sweden

来源：

MACROMOLECULES | 2009年 / 42卷 / 13期

关键词：

POLYMER; FULLERENE; MORPHOLOGY; POLYFLUORENE; FILMS; BLENDS;

D O I：

10.1021/ma802457v

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Control of the nanoscale morphology of the donor-acceptor material blends inorganic solar Cells is critical for optimizing the photovoltaic performances. The influence of intrinsic (acceptor materials) and extrinsic (donor:acceptor weight ratio, substrate, solvent) parameters was investigated, by atomic force microscopy (AFM) and electron tomography (ET), on the nanoscale phase separation of blends of a low-band-gap alternating polyfluorene copolymers (APFO-Green9) with [6,6]-phenyl-C-71-butyric acid methyl ester ([70]PCBM). The photovoltaic performances display an optimal efficiency for the device elaborated with a 1:3 APFO-Green polymer:[70][PCBM weight ratio and spin-coated from chloroform solution. The associated active layer morphology presents small phase-separated domains which is a good balance between as a large interfacial donor-acceptor area and Continuous paths of the donor and acceptor phases to the electrodes.

引用

页码：4646 / 4650

页数：5

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