Assessment of the electronic structure, morphology, and photoluminescence properties of Ca9-xAl6O18:xEu3+ phosphor using the hydrothermal assisted solid state method
作者： Tongyu He , Zhuo Hou , Zhiping Yang , Dawei Wang , Li Guan
DOI: 10.1016/J.POWTEC.2020.01.035
关键词: Photoluminescence 、 Crystal structure 、 Analytical chemistry 、 Hydrothermal circulation 、 Luminescence 、 Emission spectrum 、 Materials science 、 Ion 、 Phosphor 、 Electronic structure
摘要: Abstract Cubic phase Ca9-xAl6O18:xEu3+ red phosphors have been successfully fabricated using the hydrothermal assisted solid state method. The atomic site occupation of matrix, morphology, luminescent properties, quenching mechanisms, and thermal stabilities are investigated. possible sites Eu3+ in a matrix crystal lattice investigated via formation energy first principle calculations. Under 395 nm excitation, shows emission at 618 orange 594 nm optimal ion concentration is x = 0.06. effect reaction solution composition on morphology spectra SEM photoluminescence (PL) spectrum measurements. results reflect that samples different morphologies solutions. Additionally, PL intensities Ca8.94Al6O18:0.06Eu3+ decreased to 80.6% as temperature increased from room 150 °C. Ca9Al6O18:Eu3+ may potentially be used for white LEDs.
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