Novel method for dry etching CH3NH3PbI3 perovskite films utilizing atmospheric-hydrogen-plasma

Hayk Khachatryan, Hyeong Pil Kim, Sung Nam Lee, Han Ki Kim, Moojin Kim, Kyoung Bo Kim, Jin Jang

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Patterning of organic-inorganic hybrid methyl ammonium lead iodide (CH3NH3PbI3) perovskite films by atmospheric hydrogen plasma is explored. It is estimated that among oxygen, nitrogen, and hydrogen plasmas only the hydrogen plasma treatment is capable to etch perovskite film. A rectangular metal mask is placed to a perovskite film to form a mesa structure. The morphology of treated film is dramatically changed from metal mask to outward direction. In the patterned area eight regions are observed possessing different morphologies. The microstructures and compositions of the plasma-processed semiconducting films are analyzed in each region.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalMaterials Science in Semiconductor Processing
Volume75
DOIs
StatePublished - 1 Mar 2018
Externally publishedYes

Keywords

  • Atmospheric hydrogen plasma
  • Dry etching
  • Metal mask
  • Perovskite thin film

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