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Journal of Materials Science

, Volume 42, Issue 14, pp 5657–5660 | Cite as

Luminescence from praseodymium doped AlN thin films deposited by RF magnetron sputtering and the effect of material structure and thermal annealing on the luminescence

  • Muhammad MaqboolEmail author
  • Hugh H. Richardson
  • Martin E. Kordesch
Article

Abstract

Thin films of Praseodymium doped AlN are deposited on silicon (111) substrates at 77 K and 950 K by rf magnetron sputtering method. About 500–1000 nm thick films are grown at 100–200 watts RF power and 5–8 mTorr nitrogen, using a metal target of Al with Pr. X-rays diffraction results show that films deposited at 77 K are amorphous and those deposited at 950 K are crystalline. Cathodoluminescence studies are performed at room temperature and luminescence peaks are observed in a wide range from ultraviolet to infrared region. The most intense peak is obtained in green at 526 nm from amorphous films as a result from 3P13H5 transition. In crystalline films the intense peak was obtain in red at 648 nm as a result from 3P03F2 transition. Films are thermally activated at 1300 K for half an hour in a nitrogen atmosphere. Thermal activation enhances the intensity of luminescence. Two peaks at 488 nm and 505 nm merged after thermal activation, giving rise to a single peak at 495 nm.

Keywords

Thermal Activation Green Emission Praseodymium Blue Emission Amorphous Film 

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Muhammad Maqbool
    • 1
    Email author
  • Hugh H. Richardson
    • 2
  • Martin E. Kordesch
    • 2
  1. 1.Department of Science & MathematicsMount Olive CollegeMount OliveUSA
  2. 2.Condensed Matter & Surface Sciences ProgramOhio UniversityAthensUSA

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