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首页> 外文期刊>Physica, B. Condensed Matter >The effects of substrate temperature on the structure, morphology and photoluminescence properties of pulsed laser deposited SrAl2O4:Eu2+, Dy3+ thin films
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The effects of substrate temperature on the structure, morphology and photoluminescence properties of pulsed laser deposited SrAl2O4:Eu2+, Dy3+ thin films

机译：衬底温度对脉冲激光沉积SrAl2O4：Eu2 +，Dy3 +薄膜的结构，形态和光致发光性能的影响

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摘要

In this study, SrAl2O4:Eu2+,Dy3+ thin film phosphors were deposited on Si (100) substrates using the pulsed laser deposition (PLD) technique. The films were deposited at different substrate temperatures in the range of 40-700 degrees C. The structure, morphology and topography of the films were determined by using X-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM). Photoluminescence (PL) data was collected in air at room temperature using a 325 nm He-Cd laser as an excitation source. The PL spectra of all the films were characterized by green phosphorescent photoluminescence at similar to 530 rim. This emission was attributed to 4f(6)5d(1)-> 4f(7) transition of Eu2+. The highest PL intensity was observed from the films deposited at a substrate temperature of 400 degrees C. The effects of varying substrate temperature on the PL intensity were discussed.
机译：在这项研究中，使用脉冲激光沉积（PLD）技术将SrAl2O4：Eu2 +，Dy3 +薄膜荧光粉沉积在Si（100）衬底上。薄膜在40-700摄氏度范围内的不同衬底温度下沉积。薄膜的结构，形态和形貌通过X射线衍射（XRD），原子力显微镜（AFM），扫描电子显微镜（ SEM）和高分辨率透射电子显微镜（HRTEM）。使用325 nm He-Cd激光作为激发源，在室温下于空气中收集光致发光（PL）数据。所有薄膜的PL光谱均以类似于530边缘的绿色磷光光致发光为特征。该发射归因于Eu2 +的4f（6）5d（1）-> 4f（7）跃迁。从在400℃的基板温度下沉积的膜中观察到最高的PL强度。讨论了基板温度的变化对PL强度的影响。

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