Spectroscopy and Spectral Analysis, Volume. 40, Issue 10, 3077(2020)
Preparation and Performance of Red Phosphor ScVO4:Eu3+ for White LEDs
ScVO4:Eu3+ red phosphor was prepared using-high temperature solid-state method. The phase, morphology and luminescence properties of the samples were characterized by X-ray powder diffraction (XRD), scanning electron microscope (SEM) and photoluminescence spectrum (PL). The results showed that: the synthesized ScVO4:Eu3+ red phosphor was a tetragonal system with near-spherical surface. In the excitation spectrum, the excitation peaks at 382 nm, 395 and 466 nm were attributed to 7F0→5L7, 7F0→5L6 and 7F0→5D2 transitions, respectively. In the emission spectrum, the emission peaks at 598, 622 and 710 nm correspond to 5D0→7F1, 5D0→7F2 and 5D0→7F4 transitions of Eu3+. When Eu3+ has a doping ratio of 7% and is calcined at 1 200 ℃ for 3 h, ScVO4:Eu3+ red phosphor has a CIE color coordinate of (0.671 6, 0.327 3) and fluorescence lifetime of 0.521 ms, which is a kind of high-efficiency red phosphor expected to be used in white LED.
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Zhao LI, Yong-feng WANG, Jing CAO, Kun-yao WU, Ya-nan WANG. Preparation and Performance of Red Phosphor ScVO4:Eu3+ for White LEDs[J]. Spectroscopy and Spectral Analysis, 2020, 40(10): 3077
Category: Research Articles
Received: Oct. 26, 2019
Accepted: --
Published Online: Jun. 18, 2021
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