Light trapping of organic solar cells by nanotextured surfaces

Shigeru Kubota, Kensaku Kanomata, Bashir Ahmmad, Jun Mizuno, Fumihiko Hirose

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

Abstract

This work proposes hybrid antireflection (AR) structure that integrates moth eye texturing and multi-layer interference coating for application to organic solar cells (OSCs). We conduct nearly global optimization of the geometric parameters (i.e., the period and height of moth eye array and the thicknesses of interference layers) for the hybrid AR system. In the optimization algorithm, the simple grid search method is combined with the Hooke and Jeeves pattern search method to accelerate the search process. By using optical simulations based on the finite-difference time-domain method, we show that the proposed AR system can enhance the short-circuit current density of P3HT:PCBM-based OSCs by around 10%. The design concept of hybrid AR structure is useful for broadband light trapping of OSCs.

Original languageEnglish
Title of host publicationICEP-IAAC 2015 - 2015 International Conference on Electronic Packaging and iMAPS All Asia Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages428-431
Number of pages4
ISBN (Print)9784904090138
DOIs
Publication statusPublished - 2015 May 20
Event2015 International Conference on Electronic Packaging and iMAPS All Asia Conference, ICEP-IAAC 2015 - Kyoto, Japan
Duration: 2015 Apr 142015 Apr 17

Other

Other2015 International Conference on Electronic Packaging and iMAPS All Asia Conference, ICEP-IAAC 2015
CountryJapan
CityKyoto
Period15/4/1415/4/17

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Keywords

  • antireflection
  • FDTD
  • optical simulation
  • optimization
  • organic solar cell

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Kubota, S., Kanomata, K., Ahmmad, B., Mizuno, J., & Hirose, F. (2015). Light trapping of organic solar cells by nanotextured surfaces. In ICEP-IAAC 2015 - 2015 International Conference on Electronic Packaging and iMAPS All Asia Conference (pp. 428-431). [7111050] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICEP-IAAC.2015.7111050