光子学报, 2019, 48 (1): 0131001, 网络出版: 2019-01-27  

AAO/Ag NPs复合体系光吸收特性

Light Absorption Characteristics of AAO/Ag NPs Composite System
作者单位
哈尔滨师范大学 物理与电子工程学院 光电带隙材料教育部重点实验室, 哈尔滨 150025
摘要
利用时域有限差分法设计并分析了基于多孔氧化铝与纳米银颗粒的AAO/Ag NPs光吸收器模型, 采用物理气相沉积方法制备了AAO/Ag NPs复合体系样品, 表征并测试了不同实验参数下样品的光吸收特性.测试结果表明制备的AAO/Ag NPs复合体系样品在400~2 500 nm波段的光吸收率高达98%, 且高的光吸收率几乎不受银纳米颗粒氧化的影响.理论计算与测试分析表明多孔氧化铝孔内壁沉积的颗粒越多, 沉积深度越深, 沉积的银颗粒尺寸范围越大, 光吸收率越高, 而多孔结构有效降低了入射光的反射率, 其表面的银膜有效降低了出射光的透射率.
Abstract
AAO/Ag NPs light absorber model based on porous anodic aluminum oxide and silver nano particles was designed and analyzed by employing finite-difference time-domain method. AAO/Ag NPs composite samples were prepared by physical vapor deposition method, and the optical absorption curves of the samples with different experimental parameters were characterized and tested. Results show that the light absorbance of the AAO/Ag NPs composite is as high as 98% in the range of 400 nm to 2 500 nm, and the high light absorbance is almost independent of the oxidation of silver nano particles. Theoretical calculation and test results show that the more particles are deposited inside the porous anodic aluminum oxide hole, the deeper the particle deposition, the larger the silver nano particles size range, the higher the light absorbance. The porous anodic aluminum oxide template effectively reduces the reflectivity of incident light, and the Ag film on the surface of porous anodic aluminum oxide effectively reduces the loss of incident light.
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姜东辉, 曲佳, 徐欣, 刘坤, 孙文军. AAO/Ag NPs复合体系光吸收特性[J]. 光子学报, 2019, 48(1): 0131001. JIANG Dong-hui, QU Jia, XU Xin, LIU Kun, SUN Wen-jun. Light Absorption Characteristics of AAO/Ag NPs Composite System[J]. ACTA PHOTONICA SINICA, 2019, 48(1): 0131001.

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