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Luminescent properties of blue-emitting SrS : Cu, F thin-film EL devices

机译:发射蓝光的SrS:Cu,F薄膜EL器件的发光特性

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SrS: Cu, F thin-film electroluminescent (TFEL) devices were prepared by electron beam evaporation and their luminescent properties were investigated. Photoluminescence (PL) spectra of SrS: Cu, F phosphors were measured under excitation with 325 nm of He-Cd laser at room temperature. It was shown that the PL spectra for Cu concentration of 0.3 at% showed a strong blue emission with the peak at about 470 nm. A standard double insulator structure was employed for EL device fabrication using Y2O3 as first and second insulators, and ZnS was employed as buffer layer. TFEL devices prepared with rapid thermal annealing at 900 degreesC showed the same blue emission as the PL spectrum. The maximum luminance of 82 cd/m(2) and CIE coordinates of (x = 0.13 y = 0.22) could be obtained for devices with Cu content of 0.3 at% driven by 1 kHz pulses. [References: 4]
机译:SrS:通过电子束蒸发制备了Cu,F薄膜电致发光(TFEL)器件,并研究了其发光性能。在室温下,用325 nm He-Cd激光激发,测量了SrS:Cu,F荧光粉的光致发光(PL)光谱。结果表明,Cu浓度为0.3 at%的PL光谱显示出强烈的蓝色发射,其峰值在470 nm处。将标准的双绝缘体结构用于使用Y2O3作为第一和第二绝缘体的EL器件制造中,并使用ZnS作为缓冲层。在900摄氏度下进行快速热退火制备的TFEL器件显示出与PL光谱相同的蓝光发射。对于由1 kHz脉冲驱动的Cu含量为0.3 at%的器件,可以获得82 cd / m(2)的最大亮度和CIE坐标(x = 0.13 y = 0.22)。 [参考:4]

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