Analysing organic solar cell blends at thousands of degrees per second

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

Organic photovoltaics (OPVs) can still only achieve efficiencies below those of conventional silicon photovoltaics. To date the highest OPV efficiencies have been found for so-called bulk-heterojunction (BHJ) solar cells, where the active layer is a bi-continuous composite of donor (a conjugated polymer) and acceptor (a small molecule) phases. As in conventional polymer blend systems, the morphology formed will strongly influence the material characteristics, and post-production annealing has been shown to increase device efficiencies.
In this study, the active layer of BHJ devices is analysed using fast-scanning calorimetry techniques in order to investigate the transitions that play a role in stability and morphology development. In particular, Rapid Heat-Cool Calorimetry (RHC) [1], and fast scanning differential chip calorimetry (FSDCC) were used. FSDCC especially shows great potential for these systems due to the very high scanning rates and the ability to study thin layer samples, like in actual BHJ devices.
Original languageEnglish
Title of host publication11th Chemistry Conference for Young Scientists - Blankenberge
PublisherJong-KVCV
Publication statusPublished - 1 Mar 2012
Event11th Chemistry Conference for Young Scientists (ChemCYS 2012) - Blankenberge, België, Blankenberge, Belgium
Duration: 1 Mar 20122 Mar 2012

Other

Other11th Chemistry Conference for Young Scientists (ChemCYS 2012)
CountryBelgium
CityBlankenberge
Period1/03/122/03/12
OtherThis youth conference for starting researchers in the field of chemistry is organized very two years ans hosted under the youth section of the Koninklijke Vlaamse Chemische Vereniging

Keywords

  • organic photovoltaics
  • advanced thermal analysis
  • chip calorimetry

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