A Systematic Approach to Solvent Selection Based on Cohesive Energy Densities in a Molecular Bulk Heterojunction System

被引：173

作者：

Walker, Bright ^{[1
]}

Tamayo, Arnold ^{[2
]}

Duong, Duc T. ^{[1
]}

Dang, Xuang-Dung ^{[1
]}

Kim, Chunki ^{[1
]}

Granstrom, Jimmy ^{[1
]}

Nguyen, Thuc-Quyen ^{[1
]}

机构：

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

[2] Colorado Sch Mines, Dept Chem & Geochem, Golden, CO 80401 USA

来源：

ADVANCED ENERGY MATERIALS | 2011年 / 1卷 / 02期

基金：

美国国家科学基金会;

关键词：

POLYMER SOLAR-CELLS; NANOSCALE PHASE-SEPARATION; OLIGOTHIOPHENE DERIVATIVES; DIKETOPYRROLOPYRROLE CORE; SOLUBILITY PARAMETERS; MORPHOLOGY; EFFICIENCY; MICROSCOPY; FULLERENE; CRYSTAL;

D O I：

10.1002/aenm.201000054

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 solubilities of 3,6-bis(5-(benzofuran-2-yl)thiophen-2-yl)-2,5-bis(2-ethyl- hexyl)pyrrolo[3,4-c]pyrrole-1,4-dione (DPP(TBFu)(2)) and [6,6]-phenyl-C(71)- butyric acid methyl ester (PC(71)BM) in a series of solvents are measured, and this data is used to calculate the Hansen solubility parameters of the two materials. The dispersion, polar, and H-bonding parameters of DPP(TBFu)(2) and PC(71)BM were found to be (19.3, 4.8, 6.3) and (20.2, 5.4, 4.5) MPa(1/2), respectively, with an error of +/- 0.8 MPa(1/2). Based on the solubility properties of the two materials, three new solvents (thiophene, trichloroethylene and carbon disulfide) were utilized for the DPP(TBFu)(2):PC(71)BM system which, after device optimization, led to power conversion efficiencies up to 4.3%.

引用

页码：221 / 229

页数：9

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