Cu@C dispersed TiO2 for dye-sensitized solar cell photoanodes

H. Y. Kang, H. Paul Wang

研究成果: Article同行評審

17 引文 斯高帕斯(Scopus)

摘要

Nanosize copper embedded in the inert carbon shell (Cu@C) prepared by carbonization of Cu2+-β-CD at 573K was dispersed in TiO2. The Cu@C (0.1% and 0.3%) dispersed TiO2 was used in assembling of photoanodes for dye-sensitized solar cells (DSSCs). By small angle X-ray scattering (SAXS) spectroscopy, it is found that the Cu@C dispersed TiO2 having an average Cu diameter of 18.3nm and carbon shell thickness of 3-5nm. Larger Cu nanoparticles having an average diameter of 24.5nm in TiO2 was formed when their carbon shells were steam reformed at 673K. The Cu nanoparticles having a spherical shape are well dispersed in TiO2, which significantly enhance the photo-excited electron transfer for the DSSC. Notably, the Cu dispersed TiO2 photoanode has a greater efficiency than the pure TiO2 one by at least 23%. This work exemplifies a simple and novel alternative to enhance DSSC efficiencies.

原文English
頁(從 - 到)144-147
頁數4
期刊Applied Energy
100
DOIs
出版狀態Published - 2012 12月

All Science Journal Classification (ASJC) codes

  • 建築與營造
  • 能源(全部)
  • 機械工業
  • 管理、監督、政策法律

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