Electro-optical model of photonic crystal bulk heterojunction organic solar cells

  • John R. Tumbleston
  • , Doo Hyun Ko
  • , Edward T. Samulski
  • , Rene Lopez

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this work, we present a two-dimensional electro-optical model for the operation of bulk heterojunction (BHJ) organic solar cells with photonic crystal (PC) geometries. The model is applied to the test case of a one-dimensional (1-D) periodic PC device and a conventional planar control cell with poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-p-phenylene vinylene]:[6,6]-phenyl C61-butyric acid methyl ester (MDMO-PPV:PCBM) as the photoactive BHJ material. From the optical model we demonstrate absorption enhancements of 16% for the PC device compared to the planar control cell. In terms of the electrical model, the non-planar geometry of the PC significantly alters the internal electric field in the photoactive region, which causes a 5% reduction in the exciton dissociation probability and a significant 8.4-fold increase in the bimolecular recombination rate. Investigations are also discussed which are currently being conducted to resolve these predictions with experiment.

Original languageEnglish
Title of host publication2009 Joint Annual Conference of the National Society of Black Physicists and the National Society of Hispanic Physicists - Proceedings of the Conference
Pages121-129
Number of pages9
DOIs
StatePublished - 2010
Externally publishedYes
Event2009 Joint Annual Conference of the National Society of Black Physicists and the National Society of Hispanic Physicists - Nashville, TN, United States
Duration: 11 Feb 200915 Feb 2009

Publication series

NameAIP Conference Proceedings
Volume1280
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference2009 Joint Annual Conference of the National Society of Black Physicists and the National Society of Hispanic Physicists
Country/TerritoryUnited States
CityNashville, TN
Period11/02/0915/02/09

Keywords

  • organic photovoltaics
  • photonic crystals
  • solar cell models

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