High performance bulk-heterojunction organic solar cells fabricated with non-halogenated solvent processing

Choong Do Park, Trever A. Fleetham, Jian Li, Bryan Vogt

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

High efficiency bulk heterojunction (BHJ) organic solar cells based upon poly(3-hexylthiophene) (P3HT)-[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) are typically solution processed using halogenated solvents like dichlorobenzene (DCB). In this report, we tune the quality of solvent systems using more environmentally friendly, halogen-free solvents to mimic that of DCB based on Hansen solubility parameters (HSPs). A mixture of acetophenone (AP) and mesitylene (MS) can nearly match the HSPs for DCB. Solar cells fabricated using this solvent mixture can exhibit power conversion efficiency (PCE) comparable to that from DCB with a similar surface morphology. It is critical to control the drying process in the mixed solvent system due to significant volatility difference between AP and MS in order to achieve comparable morphology and PCE. This report illustrates a route to fabricate high efficiency BHJ solar cells from halogen-free solvent systems that could eliminate potential hurdles for manufacturing scale-up of organic BHJ solar cells.

Original languageEnglish (US)
Pages (from-to)1465-1470
Number of pages6
JournalOrganic Electronics
Volume12
Issue number9
DOIs
StatePublished - Jan 1 2011

Fingerprint

Heterojunctions
heterojunctions
solar cells
Processing
mesitylene
Solar cells
Halogens
halogens
Conversion efficiency
solubility
Solubility
Butyric acid
butyric acid
volatility
drying
Surface morphology
Organic solar cells
esters
Esters
Drying

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

Park, Choong Do ; Fleetham, Trever A. ; Li, Jian ; Vogt, Bryan. / High performance bulk-heterojunction organic solar cells fabricated with non-halogenated solvent processing. In: Organic Electronics. 2011 ; Vol. 12, No. 9. pp. 1465-1470.
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High performance bulk-heterojunction organic solar cells fabricated with non-halogenated solvent processing. / Park, Choong Do; Fleetham, Trever A.; Li, Jian; Vogt, Bryan.

In: Organic Electronics, Vol. 12, No. 9, 01.01.2011, p. 1465-1470.

Research output: Contribution to journalArticle

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