Phase transition characteristics and electrical properties of nitrogen-doped GeSb thin films for PRAM applications

Seung Yun Lee, Hyung Keun Kim, Jin Hyock Kim, Jae Sung Roh, Doo Jin Choi

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We have investigated the nitrogen doping effect on phase transition characteristics and electrical property of nitrogen-doped GeSb (N-doped GS) thin films. The nitrogen gas flow rate changed from 0 sccm (GS(0)) to 6 sccm (GS(6)) during the deposition. The sheet resistance of crystalline state was increased from 2.6 to 5.1 kω/and thermal stability of amorphous was increased as nitrogen gas flow rate increased due to nitrogen doping effect. Moreover, the average grain size was decreased from 9.7 to 6.6 nm at 400 °C as nitrogen gas flow rate increased. However, the crystallization threshold time and laser power of GS(6) were shorter and lower than GS(0) caused by lower optical reflectivity. Nitrogen-doped GeSb showed the possibility of low RESET power and high speed PRAM operation.

Original languageEnglish
Pages (from-to)4354-4359
Number of pages6
JournalJournal of Materials Science
Volume44
Issue number16
DOIs
Publication statusPublished - 2009 Aug 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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