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

Walker Bright | Zendy; Tamayo Arnold | Zendy; Duong Duc T. | Zendy; Dang XuanDung | Zendy; Kim Chunki | Zendy; Granstrom Jimmy | Zendy; Nguyen ThucQuyen | Zendy

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

Author(s) -

Walker Bright,

Tamayo Arnold,

Duong Duc T.,

Dang XuanDung,

Kim Chunki,

Granstrom Jimmy,

Nguyen ThucQuyen

Publication year - 2011

Publication title -

advanced energy materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.08

H-Index - 220

eISSN - 1614-6840

pISSN - 1614-6832

DOI - 10.1002/aenm.201000054

Subject(s) - materials science , solubility , thiophene , carbon disulfide , solvent , dispersion (optics) , hildebrand solubility parameter , butyric acid , chemistry , chemical engineering , analytical chemistry (journal) , organic chemistry , physics , optics , engineering

The solubilities of 3,6‐bis(5‐(benzofuran‐2‐yl)thiophen‐2‐yl)‐2,5‐bis(2‐ethylhexyl)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%.

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