| Title |
A Study on the Mechno-luminescent SrAl2O4:Eu,Dy Thin Film Produced by Pulsed Laser Deposition for Stress or Crack Indicating Application |
| Authors |
박덕현(Duk Hyun Park); 손기선(Kee Sun Sohn); 김지식(Ji Sik Kim) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Mechano-luminescence (ML) material; Pulsed Laser Deposition; PLD; SrAl2O4:Eu;Dy thin film phosphor |
| Abstract |
A mechno-luminescent SrAl₂O₄:Eu,Dy thin film phosphor on the surface of mechanical test specimen was developed for stress or crack indicating applications. As a preliminary step, SrAl₂O₄:Eu,Dy thin film phosphors were deposited on several conventional substrates such as quartz glass, Si(111), Si(001), and corrugated quartz glass using a pulsed laser deposition (PLD) technique. Processing parameters were optimized, in an attempt to enhance the efficiency of luminescent of the SrAl₂O₄:Eu,Dy thin film phosphor. The SrAl₂O₄:Eu,Dy thin film phosphor was also deposited on the surface of a compact tension specimen composed of polycrystalline Al₂O₃ and the applicability of the SrAl₂O4:Eu,Dy thin film phosphor as a stress or crack indicator was verified in an actual mechanical test. (Received July 14, 2004) |