Controlled Texturing of Aluminum Sheet for Solar Energy Applications

Ayieko CO, Musembi RJ, Ogacho AA, Aduda BO, Muthoka BM, Jain PK. "Controlled Texturing of Aluminum Sheet for Solar Energy Applications." Advances in Materials Physics and Chemistry,. 2015;5:458-466.


Aluminum sheets were polished to reduce ruggedness and then textured in varying acid-ethanol
concentration etchant to form pores. The textured surface was characterized structurally by using
X-ray diffraction (XRD) which revealed aluminum crystallographic planes (1 1 1), (2 0 0), (2 2 0)
and (3 1 1). Its morphology was studied by using energy dispersive X-ray (EDX) and scanning
electron microscope (SEM) that confirmed purity of aluminum sheet to be 99.66% at. Reflectance
of textured and plain aluminum sheet was analyzed by spectrophotometric measurements which
showed that texturing reduced the reflectance of the polished surface by 26% in the UV-VIS-NIR
spectrum of solar radiation. With reduced reflectance of the textured aluminum sheet, it was applicable
for solar radiation absorption.
Aluminum, Texturing, Reflectance, Solar Energy, Electro-Polishing

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