Hexagonal array micro-convex patterned substrate for improving diffused transmittance in perovskite solar cells

Kyoung Suk Oh, Minseop Byun, Minjin Kim, Yang Doo Kim, Kwan Kim, Daihong Huh, Dong Suk Kim, Heon Lee

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


In the past decade, the fastest development in solar cell research has occurred for perovskite solar cells. Owing to the favorable properties of perovskite materials, perovskite solar cells exhibit excellent power conversion efficiencies and there appears great potential for future development. In this paper, we report the fabrication of a substrate with excellent optical properties by incorporating hexagonal array micro-convex (HAMC) nanostructures in it before integration with the electrode (indium tin oxide and zinc oxide) and the halide for use in organic-inorganic perovskite solar cells. This was fabricated using nanoimprint lithography which showed excellent throughput and involved simple processing methods. The HAMC nanostructured substrate showed strong light scattering as compared to that of the conventional substrate. This resulted in the increase of current density of the fabricated solar cell from 19.45 mA/cm2 (un-patterned substrate) to 20.92 mA/cm2 (nanostructured substrate) with accompanying increase in the external quantum efficiency and a satisfactory performance by the perovskite solar cell.

Original languageEnglish
Pages (from-to)682-687
Number of pages6
JournalThin Solid Films
Publication statusPublished - 2018 Aug 30


  • Diffused transmittance
  • Hexagonal array pattern
  • Indium tin oxide
  • Micro-convex nanostructure
  • Nanoimprint lithography
  • Perovskite solar cells
  • Zinc oxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry


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