Novel fabrication method for ZnO films via nitrogen-mediated crystallization

N. Itagaki, K. Kuwahara, K. Matsushima, K. Oshikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

High quality ZnO films have been obtained by utilizing buffer layers fabricated via nitrogen mediated crystallization (NMC), where sputtering method is employed for preparation of both buffer layers and ZnO films. The crystal grain size of ZnO:Al (AZO) films with NMC-buffer layers is about 3 times larger than that of conventional films, which is considered to be due to the low nuclei density of NMC-buffer layers. As a result, the resistivity of AZO films drastically reduces from 4.76 mΩ·cm for the conventional films to 0.48 mΩ·cm for our films when the total film thickness is 20 nm. The NMC buffer layers also improve the spatial distribution of the resistivity, which indicates that the crystallinity at the initial stage of deposition govern the properties of AZO films. Furthermore, we have succeeded in epitaxial growth of ZnO films, whose FWHM of the rocking curve of (002) peak is as narrow as 0.061°, on c-plane sapphire substrates by using the NMC method. From these results, we conclude that our method described here is full of promise for fabrication of ZnO-based materials.

Original languageEnglish
Title of host publicationOxide-Based Materials and Devices III
DOIs
Publication statusPublished - 2012
EventOxide-Based Materials and Devices III - San Francisco, CA, United States
Duration: Jan 22 2012Jan 25 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8263
ISSN (Print)0277-786X

Other

OtherOxide-Based Materials and Devices III
CountryUnited States
CitySan Francisco, CA
Period1/22/121/25/12

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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