Photoluminescence of Al2O3 nanocrystals induced by compressive stress

✍ Scribed by C.L. Yuan; W. Lei

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 385 KB
• Volume: 42
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/j.physe.2010.01.026

✦ Synopsis

This manuscript presents a study on the growth stress of Al 2 O 3 nanocrystals in Lu 2 O 3 matrix and its resultant effect on the optical properties of Al 2 O 3 nanocrystals. The high-resolution transmission electron microscopy study reveals the complete isolation of Al 2 O 3 nanocrystals embedded in Lu 2 O 3 matrix. Two dimensional finite element calculations clearly demonstrate that Al 2 O 3 nanocrystals certainly experience great compressive stress in Lu 2 O 3 matrix. This may lead to a great deal of defects formed around or inside Al 2 O 3 nanocrystals to relax the compressive stress incurred by Al 2 O 3 nanocrystals, leading to the photoluminescence emission observed.