Nanosize copper encapsulated carbon thin films on a Dye-sensitized solar cell cathode

Chien Hua Huang, H. Paul Wang, Chang Yu Liao

研究成果: Article同行評審

9 引文 斯高帕斯(Scopus)

摘要

Deposition of the nanosize copper encapsulated carbon (Cu@C) thin film onto the cathode has been studied to enhance efficiency of the dye-sensitized solar cell (DSSC). The X-ray diffraction (XRD) patterns of the Cu@C are suggestive of existence of metallic copper (Cu) nanoparticles in the thin film. The UV-visible spectrum of the Cu@C coated on indium-doped tin oxide (ITO) shows a red shift (probably due to the longitudinal resonance) as the size of Cu in the Cu@C increases. Moreover, the images observed by field-emission scanning electron microscopy (FE-SEM) indicate that the Cu@C nanoparticles are well dispersed on ITO. By extended X-ray absorption fine structure (EXAFS) spectroscopy, a decrease of the coordination number (CN) of Cu-Cu with decreasing sizes of Cu in the Cu@C is observed. Interestingly, an enhanced efficiency of the DSSC with the Cu@C nanoparticles coated ITO cathode by 50% is found if compared with the relatively expensive Pt electrode. As the size of Cu in the Cu@C on ITO decreases (e.g., 20 → 7 nm), the efficiency of the DSSC can be increased by 80% approximately.

原文English
頁(從 - 到)4782-4785
頁數4
期刊Journal of Nanoscience and Nanotechnology
10
發行號7
DOIs
出版狀態Published - 2010 7月

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 一般化學
  • 生物醫學工程
  • 一般材料科學
  • 凝聚態物理學

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