High quality thin film phosphors of Y2O3:Eu3+ deposited via chemical bath deposition
来源期刊：JOURNAL OF RARE EARTHS2010年第5期
论文作者：王娇 张志军 郭向欣 赵景泰 陈昊鸿 杨昕昕
文章页码：684 - 687
摘 要：High transparency in visible region was required for red-light-emitting Y2O3:Eu3+ thin film phosphors. Such films were obtained via chemical bath deposition on bare SiO2 glass substrates through heterogeneous nucleation with further heat treatment. Thin amorphous yttrium basic carbonate films could be completely transformed to crystalline Y2O3 at 650 °C. X-ray diffraction and field-emission scanning electron microscopy were used to characterize these products. The deposition temperature and the post-annealing conditions were crucial factors for preparing high-quality thin films. The thin films prepared with optimized parameters emitted a bright red light around 612 nm. Meanwhile, these thin films exhibited optical transmittance of 90% to 95% in a wavelength range of 400 to 800 nm depending on the chemical deposition solution. These results clearly indicated that chemical solution deposition is a promising technique for large-scale production of thin film phosphors in application of display technology.
王娇1,2，张志军1，郭向欣1，赵景泰1，陈昊鸿1，杨昕昕1
1. Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences2. Graduate School of Chinese Academy of Science
摘 要：High transparency in visible region was required for red-light-emitting Y2O3:Eu3+ thin film phosphors. Such films were obtained via chemical bath deposition on bare SiO2 glass substrates through heterogeneous nucleation with further heat treatment. Thin amorphous yttrium basic carbonate films could be completely transformed to crystalline Y2O3 at 650 °C. X-ray diffraction and field-emission scanning electron microscopy were used to characterize these products. The deposition temperature and the post-annealing conditions were crucial factors for preparing high-quality thin films. The thin films prepared with optimized parameters emitted a bright red light around 612 nm. Meanwhile, these thin films exhibited optical transmittance of 90% to 95% in a wavelength range of 400 to 800 nm depending on the chemical deposition solution. These results clearly indicated that chemical solution deposition is a promising technique for large-scale production of thin film phosphors in application of display technology.
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