CuO thin films made of nanofibers for solar selective absorber applications

被引：76

作者：

Kumar, S. Karthick ^{[1
]}

Suresh, S. ^{[1
]}

Murugesan, S. ^{[2
]}

Raj, Samuel Paul ^{[1
]}

机构：

[1] Madurai Kamaraj Univ, Sch Energy Environm & Nat Resources, Madurai 625021, Tamil Nadu, India

[2] Madurai Kamaraj Univ, Sch Chem, Madurai 625021, Tamil Nadu, India

来源：

SOLAR ENERGY | 2013年 / 94卷

关键词：

Solar selective absorbers; Chemical oxidation; CuO nanostructures; CuO thin films; ALUMINUM-ALLOYS; COBALT COATINGS; COPPER; OXIDE; NANOSTRUCTURES; TEMPERATURE; DEPOSITION; NANOWIRES; CU(OH)(2); SURFACES;

D O I：

10.1016/j.solener.2013.05.018

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

CuO thin films made of one dimensional (1D) nanostructures, such as, nanofibers and nanoneedles, are prepared through a facile chemical oxidation of copper (Cu) substrate at different pH conditions maintained by changing the concentration of sodium hydroxide (NaOH) in the reaction medium. The effect of pH on the formation of different CuO nanostructures is examined by analyzing their surface morphology, crystalline nature and chemical composition. The optical properties of the CuO thin films are studied through UV vis and IR reflectance measurements. The X-ray diffraction (XRD) study indicates that the formed CuO nanostructures are highly crystalline and of single phase in nature. All the thin film samples made of 1D CuO nanostructures have good solar-selectivity (>10) with low thermal emittance (<7%) and high solar absorptance (>95%). The CuO thin films possess high solar-selectivity value of 13.8 and thus could be suitable for selective absorber in solar collectors for thermal energy conversion. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：299 / 304

页数：6

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