Maximal light-energy transfer through a dielectric/metal-layered electrode on a photoactive device

Kyoung Ho Kim, Q. Han Park

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We report the fabrication of an optimized low reflective dielectric/metal-layered electrode that provides significant electrical conductivity and light transparency in the near-infrared wavelength regime. By making the metal film thickness thick enough and choosing a proper dielectric layer with a certain thickness, we show that our suggested electrode significantly reduces the light reflection while preserving high electrical conductivity. We demonstrate our optimized electrodes present a highly conductive surface with a sheet resistance of 5.2 O/sq and a high light transmittance of near 85% in the near-infrared regime. We also apply our optimized electrode to thin-film organic photovoltaic devices and show the electrode helps in absorbing light energy inside an active layer. We believe that this simple but powerful layered electrode will pave the way for designing transparent electrodes on photoactive devices.

Original languageEnglish
Pages (from-to)1963-1970
Number of pages8
JournalOptics Express
Volume22
Issue number2
DOIs
Publication statusPublished - 2014 Jan 27

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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