Details

Autor(en) / Beteiligte

• Qu, Enze
• Zhang, Yangyi
• Wang, Lixiang
• Chen, Jiaming
• Li, Dongke
• Zhao, Jingjie
• Xu, Jun
• Chen, Kunji

Titel

Alkaline earth metal ion doping to enhance the light emission from Er:SnO nanocrystal Co-doped silica films

Ist Teil von

• Physical chemistry chemical physics : PCCP, 2023-07, Vol.25 (27), p.18175-18181

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Alkaline earth metal ions (Mg 2+ , Ca 2+ , Sr 2+ ) have been introduced into Er 3+ :SnO 2 nanocrystal co-doped silica thin films fabricated by a sol-gel method combined with a spin-coating technique. It is found that the incorporation of alkaline earth metal ions can enhance the light emission from Er 3+ at the wavelength around 1540 nm and the strongest enhancement is observed in samples doped with 5 mol% Sr 2+ ions. Based on X-ray diffraction, X-ray photoelectron spectroscopy and other spectroscopic measurements, the improved light emission can be attributed to more oxygen vacancies, better crystallinity and a stronger cross-relaxation process with the introduction of alkaline earth metal ions. The NIR light emission intensities around 1540 nm from Er 3+ ions can be obviously enhanced for all alkaline earth metal ion co-doped samples with suitable doping concentrations.