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Improvement of conversion efficiency of bulk heterojunction organic solar cells using photo-curable crosslinker

Authors
Journal
Solar Energy Materials and Solar Cells
0927-0248
Publisher
Elsevier
Publication Date
Volume
94
Issue
8
Identifiers
DOI: 10.1016/j.solmat.2010.04.007
Keywords
  • Organic Solar Cell
  • Bulk Heterojunction
  • Photo-Curable Crosslinker
  • Cell Efficiency
  • Effective Interface

Abstract

Abstract We have studied the performance improvement of organic photovoltaic cell through the molecular ordering of the P3HT and PCBM-71 using photo-curable crosslinker and photoinitiator. The photo-curable crosslinker ranging from 1% to 5% was added in the active layer to change the surface morphology of the bulk heterojunction organic solar cell. The cell with 1% crosslinker exhibited the J SC of 8.65 mA/cm 2, V OC of 0.607 V, fill factor of 65.30%, and conversion efficiency of 3.43%, which is 11% improvement compared to the control device. The improvement of efficiency is mainly due to increase in short-circuit current by forming more effective interface area between donor and acceptor regions.

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