Zincblende-wurtzite phase transformation of ZnSe films by pulsed laser deposition with nitrogen doping

  • Xiaojun Zhang
  • , Dandan Wang
  • , Matthew Beres
  • , Lei Liu
  • , Zhixun Ma
  • , Peter Y. Yu
  • , Samuel S. Mao

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Nitrogen-doped ZnSe films have been fabricated by pulsed laser deposition. It is found that the incorporation of nitrogen has resulted in a phase transformation from zincblende to wurtzite. By first-principles total energy calculations, two newly observed Raman peaks at 555 cm-1 and 602 cm-1 are assigned to vibration modes of N substituting Se in wurtzite and zincblende structures, respectively. This preference of wurtzite phase is consistent with previous prediction of the energy difference ΔE WZ-ZB between wurtzite structure and zincblende structure. This work opens a way to achieve stable ZnSe-based polytypism and may help understand the mechanisms of nitrogen doping in wide-bandgap semiconductors.

Original languageBritish English
Article number082111
JournalApplied Physics Letters
Volume103
Issue number8
DOIs
StatePublished - 19 Aug 2013

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