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Yb3+/Ho3+co-doped YPO4 nano phosphors were synthesized by polyol route, which has both up-conversion (UC) and down-conversion (DC) characteristics and excellent luminescent properties. DC peaks were seen at ~460, ~550, and ~650 nm.
Switching at ~750 with 300 nm excitation revealed a modest P-O charge-transfer (CT) band of the Ho3+ ion and a little non-radiative resonant energy transfer. We discovered that YPO4: Yb3+/Ho3+ is an up-converting (UC) nanophosphor capability. Large-scale creation and amplification of light through green and red emissions.
Strong laser irradiation at 980 nm results in clear up-conversion emission peaks for Ho3+ ions at 550 and 650 nm. This technique yields high-quality nanocrystalline materials with tens of nanometers in size. YPO4 produced high quantum yield values: Yb3+/Ho3+ when stimulation was applied at 300 nm.
This finding can be used to manufacture high-efficiency phosphors and demonstrates that the nano-phosphor materials covered by this method have a wide range of applications.