Self-organized antireflection CuIn(S,Se) 2 nano-protrusions on flexible substrates by ion erosion based on CuInS 2 nanocrystal precursor inks

Yu Ting Yen, Yi Chung Wang, Chia Wei Chen, Hung Wei Tsai, Yu Ze Chen, Fan Hu, Yu Lun Chueh

Research output: Contribution to journalArticle

Abstract

In this work, an approach to achieve surface nano-protrusions on a chalcopyrite CuIn(S,Se) 2 thin film was demonstrated. Home-made CuInS 2 nanocrystals with average diameter of 20 nm were prepared and characterized. By applying ion erosion process on the CuIn(S,Se) 2 film, large-area self-aligned nano-protrusions can be formed. Interestingly, the process can be applied on flexible substrate where the CuIn(S,Se) 2 film remains intact with no visible cracking after several bending tests. In addition, reflectance spectra reveal the extraordinary anti-reflectance characteristics of nano-protrusions on the CuIn(S,Se) 2 film with the incident light from 350 to 2000 nm. A 36-cm 2 CuIn(S,Se) 2 film with nano-protrusions on flexible molybdenum foil substrate has been demonstrated, which demonstrated the feasibility of developing low cost with a high optical absorption CuIn(S,Se) 2 flexible thin film.

Original languageEnglish
Pages (from-to)36-41
Number of pages6
JournalApplied Surface Science
Volume354
DOIs
Publication statusPublished - 2015 Nov 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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