期刊
DALTON TRANSACTIONS
卷 50, 期 26, 页码 9037-+出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1dt00971k
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资金
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [103.03-2017.39]
A novel broad-band-emitting phosphor based on Al-doped ZnO was reported, showing full spectrum emission with promising potential for UV-pump warm white light-emitting diodes.
The development of full-visible-spectrum phosphors is essential for next-generation light-emitting devices with better light quality. Herein, we report on a novel broad-band-emitting phosphor based on single-composition Al-doped ZnO phosphors. Under the UV excitation of 325 nm, the ZnO : Al phosphor exhibits a full spectrum emission in the visible wavelength range from 400 to 800 nm with a CIE chromaticity coordinate of (0.42, 0.48), a quantum efficiency of 43%, a color rendering index (CRI) of 74, a correlated color temperature (CCT) value of 3873 K and an activation energy of 0.22 eV. A prototype of a UV-pumped warm WLED with a high CRI of 87 and a CCT of 4067 K has been achieved by using only this broad-band-emitting Al3+-doped ZnO phosphor. The obtained results indicate that the single-composition Al3+-singly doped warm white emitting phosphor is a promising candidate for UV-pump warm white light-emitting diodes.
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