Formation and characterization of infrared absorbing copper oxide surfaces


Arslan B., Demirci G., Erdogan M., Karakaya İ.

APPLIED SURFACE SCIENCE, cilt.402, ss.218-224, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 402
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1016/j.apsusc.2017.01.011
  • Dergi Adı: APPLIED SURFACE SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.218-224
  • Anahtar Kelimeler: Chemical conversion, Reflective coating, Absorbing coating, Cupric oxide, Cuprous oxide, THIN-FILMS, CUO NANOSTRUCTURES, NANOWIRES, GROWTH, TRANSITION, MECHANISM, WATER, CU2O
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Copper oxide formation has been investigated to combine the advantages of producing different size and shapes of coatings that possess good light absorbing properties. An aqueous blackening solution was investigated and optimum composition was found as 2.5 M NaOH and 0.225 M NaClO to form velvet copper oxide films. A two-step oxidation mechanism was proposed for the blackening process by carefully examining the experimental results. Formation of Cu2O was observed until the entire copper surface was covered at first. In the second step, Cu2O surface was further oxidized to CuO until the whole Cu2O surface was covered by CuO. Therefore, blackened copper surfaces consisted of Cu2O/CuO duplex oxides. Characterization of the coatings were performed in terms of microstructure, phase analysis, chemical state, infrared specular and total reflectivity by SEM, XRD, XPS, FUR and UV-vis spectrophotometry, respectively.(C) 2017 Elsevier B.V. All rights reserved.