Enhancement of upconversion luminescence of YAlO3: Er3+ by Gd3+ doping

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2012,（8）
• 页码范围: 46-49
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201210.081602

摘要

The upconversion luminescences of YAlO3:Er3+ phosphor co-doping with different Gd3+ concentrations are investigated under the excitation of 980- and 532-nm diode lasers.A near ultraviolet upconversion emission at 410 nm is observed in YAlO3 under 532-nm excitation.Moreover,the inactive Gd3+ ions can improve the upconversion intensity efficiently in a certain range of concentration.Under 980-nm excitation,the visible upconversion emissions at 546 and 646 nm are enhanced by about 10 and 8 times at the Gd3+concentration of 40％,respectively.The upconversion emission at 410 nm under 532-nm excitation is also enhanced by 7 times.The substitution of Gd3+ ions for y3+ sites changes the local symmetry of Er3+,leading to the improvement of upconversion efficiency.