Tunable multicolor upconversion luminescence of Ho3+/Yb3+ -doped Y2O3 phosphors via Er3+

Key Points

• Multicolor upconversion luminescence was achieved through energy transfer mechanisms involving rare earth ions—Ho3+, Yb3+, and Er3+.
• The study demonstrates tunable luminescence properties, particularly in the visible range, reaching notable emission peaks from 480 nm to 650 nm.
• Analysis of phosphor samples doped with varying concentrations of Er3+ was conducted to assess their luminescent efficiency and overall output.
• These findings highlight the potential use of these doped phosphors in optoelectronic devices, emphasizing their tunability and application in advanced technologies.