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Characterizing enhanced performance of nanopatterned bulk heterojunction organic photovoltaics

  • John R. Tumbleston
  • , Doo Hyun Ko
  • , Rene Lopez
  • , Edward T. Samulski
  • University of North Carolina at Chapel Hill

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We present experimental and theoretical studies of a nanopatterned photonic crystal formed between the bulk heterojunction blend, poly-3-hexylthiophene:[6, 6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) and nanocrystalline zinc oxide (nc-ZnO). The nanopattern is fabricated using the Pattern Replication in Non-wetting Templates (PRINT) technique. We summarize the fabrication method and show how it can be used to make a highly ordered hexagonal array of photovoltaic P3HT:PCBM posts. We also discuss theoretical studies of optical absorption for the nanopattern design that result in a 22% enhancement over a conventional planar cell. Spectroscopic ellipsometry is also used to determine the optical constants of solar cell materials that are used in the optical model. Finally, we calculate the local exciton creation profile within the photoactive nanopattern to relate the nanostructured geometry to electrical performance.

Original languageEnglish
Title of host publicationNanoscale Photonic and Cell Technologies for Photovoltaics
DOIs
StatePublished - 2008
Externally publishedYes
EventNanoscale Photonic and Cell Technologies for Photovoltaics - San Diego, CA, United States
Duration: 11 Aug 2008 → 13 Aug 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7047
ISSN (Print)0277-786X

Conference

ConferenceNanoscale Photonic and Cell Technologies for Photovoltaics
Country/TerritoryUnited States
CitySan Diego, CA
Period11/08/08 → 13/08/08

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy
  2. SDG 9 - Industry, Innovation, and Infrastructure
    SDG 9 Industry, Innovation, and Infrastructure

Keywords

  • Nanofabrication
  • Organic photovoltaics
  • Photonic crystals

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