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A facile process to prepare copper oxide thin films as solar selective absorbers
Xiao, Xiudi1,2; Miao, Lei1; Xu, Gang1; Lu, Limei3; Su, Zhanmin3; Wang, Ning4; Tanemura, Sakae1,5
2011-10-01
发表期刊APPLIED SURFACE SCIENCE
卷号257期号:24页码:10729-10736
摘要Copper oxide thin films as solar selective absorbers were conveniently prepared by one-step chemical conversion method. X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-vis-NIR spectra and Fourier transform infrared (FTIR) spectra were employed to characterize the composition, structure and optical properties of thin films. The results indicated that the composition, structure and optical properties of thin films were greatly influenced by reaction temperature, time and concentration of NaOH. When reaction temperature was fixed at 40 degrees C, the as-prepared films consist of pure cubic Cu(2)O. The surface morphology of thin films was changed from square-like structure (reaction time <= 25 min) to porous belt-like structure (reaction time >= 30 min) with the elongation of reaction time. While for thin films prepared at 60 degrees C and 80 degrees C, single Cu(2)O was observed after 5 min reaction. When reaction time is longer than 5 min, CuO appears and the content of CuO is increasing with the elongation of reaction time. With the increase of reaction temperature, the belt-like structure was easily formed for 60 degrees C/10 min and 80 degrees C/5 min. Decreasing concentration of NaOH also could result in the formation of CuO and porous belt-like structure. Simultaneously, the film thickness is increasing with the increase of reaction time, temperature and concentration. Films containing CuO with belt-like structure exhibited high absorptance (>0.9), and the emissivity of films increased with elongation of reaction time. Combination of the composition, structure and optical properties, it can be deduced that the porous belt-like structure like as a light trap can greatly enhance absorbance (alpha), while the composition, thickness and roughness of thin films can greatly influence the emissivity (epsilon). The highest photo-thermal conversion efficiency was up to 0.86 (alpha/epsilon = 0.94/0.08) for thin films prepared at 80 degrees C/5 min, which proved that the CuO(x) thin films can be served as high performance solar selective absorbers. (C) 2011 Elsevier B. V. All rights reserved.
文章类型Article
关键词Copper Oxide Solar Selective Absorber Absorbance Emissivity
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.apsusc.2011.07.088
研究领域[WOS]Chemistry ; Materials Science ; Physics
关键词[WOS]CUPROUS-OXIDE ; BLACK CHROME ; CELL ; NANOCRYSTALS ; DEPOSITION ; EFFICIENCY ; ALUMINUM ; COATINGS ; SURFACE ; SHAPE
收录类别SCI
语种英语
WOS类目Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS记录号WOS:000295540800069
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文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10351
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrates, Guangzhou 510640, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat, Shanghai 200050, Peoples R China
3.S China Univ Technol, Guangzhou 510640, Peoples R China
4.Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China
5.Japan Fine Ceram Ctr, Nanostruct Res Lab, Nagoya, Aichi 4568587, Japan
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Xiao, Xiudi,Miao, Lei,Xu, Gang,et al. A facile process to prepare copper oxide thin films as solar selective absorbers[J]. APPLIED SURFACE SCIENCE,2011,257(24):10729-10736.
APA Xiao, Xiudi.,Miao, Lei.,Xu, Gang.,Lu, Limei.,Su, Zhanmin.,...&Tanemura, Sakae.(2011).A facile process to prepare copper oxide thin films as solar selective absorbers.APPLIED SURFACE SCIENCE,257(24),10729-10736.
MLA Xiao, Xiudi,et al."A facile process to prepare copper oxide thin films as solar selective absorbers".APPLIED SURFACE SCIENCE 257.24(2011):10729-10736.
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