articleJournal of the American Chemical SocietyFeb 21, 2008Closed access

Processing Additives for Improved Efficiency from Bulk Heterojunction Solar Cells

JKJae Kwan LeeWLWan LiCJChristoph J. BrabecJDJonathan D. YuenJSJi Sun Moon
PubMed
Indexed incrossrefpubmed

Abstract

Two criteria for processing additives introduced to control the morphology of bulk heterojunction (BHJ) materials for use in solar cells have been identified: (i) selective (differential) solubility of the fullerene component and (ii) higher boiling point than the host solvent. Using these criteria, we have investigated the class of 1,8-di(R)octanes with various functional groups (R) as processing additives for BHJ solar cells. Control of the BHJ morphology by selective solubility of the fullerene component is demonstrated using these high boiling point processing additives. The best results are obtained with R = Iodine (I). Using 1,8-diiodooctane as the processing additive, the efficiency of the BHJ solar…

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Topics & keywords

Topics
Keywords
  • Chemistry
  • Solubility
  • Fullerene
  • Polymer solar cell
  • Solvent
  • Boiling point
  • Chemical engineering
  • Boiling
UN Sustainable Development Goals
  • Affordable and clean energy
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