Synthesis of Sr2Sb2O7: Eu3+ Phosphors with Excitation-Dependent Emission (Normal 5D0→7F1/Abnormally Strong 5D0→7F2) for Light-Emitting Diodes and Optical Fingerprint Detection

Key Points

• Strong excitation-dependent emission properties were observed in europium-doped strontium antimonate phosphors.
• The phosphors show both normal and abnormally strong transitions from 5D0 to 7F1/7F2 states, enhancing light output.
• Synthesis was achieved using a controlled chemical method tailored for light-emitting diode applications.
• Findings indicate potential for improving optical fingerprint detection systems, warranting further investigation.