铜纳米晶-有序多孔氧化铝复合膜光学性能的研究

doi:10.3724/SP.J.1077.2011.00907

无机材料学报 ›› 2011, Vol. 26 ›› Issue (9): 907-911.DOI: 10.3724/SP.J.1077.2011.00907 CSTR: 32189.14.SP.J.1077.2011.00907

铜纳米晶-有序多孔氧化铝复合膜光学性能的研究

刘艳¹, 杨修春¹, 周慧², 侯军伟¹, 韩珊珊¹, 钱士雄²

(1. 同济大学材料科学与工程学院, 先进土木工程材料教育部重点实验室, 上海201804; 2. 复旦大学应用表面物理国家重点实验室, 上海200433)

收稿日期:2010-11-15 修回日期:2011-01-06 出版日期:2011-09-20 网络出版日期:2011-08-19
作者简介:刘艳(1985-), 女, 硕士研究生. E-mail: liuyanlwsmile@163.com
基金资助:
上海市科委基础研究重点项目(08JC419000)

Optical Properties of Cu Nanocrystalline-OPAA Composite Film

LIU Yan¹, YANG Xiu-Chun¹, ZHOU Hui², HOU Jun-Wei¹, HAN Shan-Shan¹, QIAN Shi-Xiong²

(1.Key Laboratory of Advanced Civil Engineering Materials, Ministry of Education, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China; 2. State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China)

Received:2010-11-15 Revised:2011-01-06 Published:2011-09-20 Online:2011-08-19
Supported by:
Basic Research Project of Shanghai Science and Technology Commission(08JC419000)

摘要/Abstract

摘要： 采用常压直流电沉积技术在有序多孔氧化铝(OPAA)模板内沉积Cu纳米晶, 制备出光学透明的铜纳米晶/ OPAA复合膜. 利用FESEM、TEM、紫外可见分光光度计、Z-scan技术、泵浦探测技术对该复合材料的形貌、结构、线性光吸收、三阶非线性极化率和光响应时间进行了分析. 结果表明, Cu纳米颗粒具有面心立方结构, 直径在40~50 nm之间, 分布在OPAA模板的分叉孔道区. 填充于有序多孔氧化铝模板中的Cu纳米晶在584 nm处出现等离子体共振吸收峰. 当探测光波长远离铜纳米晶的等离子体共振吸收峰时, Cu纳米晶/多孔氧化铝复合膜出现光致吸收特性, 而当探测光波长接近铜纳米晶的等离子体共振吸收峰时, 出现光致漂白现象. 该复合膜非共振三阶非线性极化率为0.73×10^-9esu, 光响应时间为1.3ps.

关键词: 有序多孔氧化铝, 铜纳米晶, 三阶光学非线性

Abstract: Optically transparent Cu nanocrystalline/OPAA composite film was successfully prepared by electrodepositing Cu into ordered porous anodic alumina (OPAA) template using constant voltage direct current technique. The morphology, structure, linear optical absorption, third-order optical nonlinearity and ultrafast dynamics of the Cu/OPAA composite were characterized by field emission scanning electron microscope (FESEM), transmission electron microscope (TEM). UV-Vis spectrophotometer, Z-scan technique and femtosecond pump-probe experiment. The results show that Cu nanoparicles have diameters of 40–50nm with face center cubic structure and disperse in the branched pores of the OPAA template, which induce a surface plasmon resonance (SPR) absorption at 584 nm. When the probe optical wavelength is far away from the SPR wavelength, Cu nanocrystalline/OPAA composite film possesses a character of light-induced absorption. When the probe optical wavelength is near the SPR wavelength, it possesses a photo-bleaching character. The composite film has a non-resonant third-order nonlinear susceptibility of 0.73×10^-9 esu and a response time of 1.3 ps.

Key words: ordered porous anodic alumina, Cu nanocrystalline, third-order optical nonlinearity

中图分类号:

TB333

刘艳, 杨修春, 周慧, 侯军伟, 韩珊珊, 钱士雄. 铜纳米晶-有序多孔氧化铝复合膜光学性能的研究[J]. 无机材料学报, 2011, 26(9): 907-911.

LIU Yan, YANG Xiu-Chun, ZHOU Hui, HOU Jun-Wei, HAN Shan-Shan, QIAN Shi-Xiong. Optical Properties of Cu Nanocrystalline-OPAA Composite Film[J]. Journal of Inorganic Materials, 2011, 26(9): 907-911.

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铜纳米晶-有序多孔氧化铝复合膜光学性能的研究

Optical Properties of Cu Nanocrystalline-OPAA Composite Film

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