Abstract
A kind of red emitting phosphor, Sr2B2O5:Eu3+, Na+ for white light-emitting diodes (W-LED) was synthesized by high-temperature solid-state reaction method. The characterization and luminescence properties of the phosphor were investigated. It is found that this phosphor can be effectively excited by 394 nm near-ultraviolet (n-UV) light, and exhibit bright red emission centered at 613 nm corresponding to the 5D0→7F2 transition of Eu3+ ions. It is shown that the 11 mol% of Eu3+ doping concentration in Sr2B2O5:Eu3+, Na+ phosphor is optimum, and the concentration quenching occurs when the Eu3+ concentration is beyond 11 mol%. The concentration quenching mechanism can be interpreted by the dipole–dipole interaction of Eu3+ ions. The present work suggests that this novel phosphor is a kind of potential red emitting phosphor.
Published Version
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