Ascertaining the limitations of low mobility on organic solar cell performance

B. M. Savoie, S. Tan, J. W. Jerome, C. W. Shu, M. A. Ratner, T. J. Marks

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

1 Citation (Scopus)

Abstract

In the past decade, organic photovoltaics (OPV) have emerged as an intensely studied alternative energy technology. The OPV platform presents several attractive qualities, yet, the high disorder and relative low mobility of the materials comprising OPV systems remain a bottleneck to further progress. We report here a modeling methodology that quantifies the efficiency losses engendered by the low mobility of these systems. We also report a methodology that explicitly treats the charge transfer (CT) state that has been shown to influence device performance. We compare two commonly studied OPV architectures, the bilayer (BL) and blended bulk-heterojunction (BHJ), and separately investigate the sensitivity of each architecture to mobility. Our findings suggest that mismatched mobilities of the active layer components can lead to additional recombination currents. We find that the collection current is largely limited by the slow carrier; consequently, the high mobility carriers only increase the recombination current without aiding collection.

Original languageEnglish
Title of host publication2012 15th International Workshop on Computational Electronics, IWCE 2012
DOIs
Publication statusPublished - Sep 27 2012
Event2012 15th International Workshop on Computational Electronics, IWCE 2012 - Madison, WI, United States
Duration: May 22 2012May 25 2012

Publication series

Name2012 15th International Workshop on Computational Electronics, IWCE 2012

Other

Other2012 15th International Workshop on Computational Electronics, IWCE 2012
CountryUnited States
CityMadison, WI
Period5/22/125/25/12

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ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Electrical and Electronic Engineering

Cite this

Savoie, B. M., Tan, S., Jerome, J. W., Shu, C. W., Ratner, M. A., & Marks, T. J. (2012). Ascertaining the limitations of low mobility on organic solar cell performance. In 2012 15th International Workshop on Computational Electronics, IWCE 2012 [6242859] (2012 15th International Workshop on Computational Electronics, IWCE 2012). https://doi.org/10.1109/IWCE.2012.6242859