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

H. Y. Kang, Hong-Paul Wang

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)144-147
Number of pages4
JournalApplied Energy
Volume100
DOIs
Publication statusPublished - 2012 Jan 1

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dye
shell
Carbon
carbon
Nanoparticles
Carbonization
X ray scattering
Steam
spectroscopy
scattering
Spectroscopy
copper
Copper
electron
Electrons
solar cell
Dye-sensitized solar cells
nanoparticle

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Energy(all)

Cite this

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abstract = "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.",
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Cu@C dispersed TiO2 for dye-sensitized solar cell photoanodes. / Kang, H. Y.; Wang, Hong-Paul.

In: Applied Energy, Vol. 100, 01.01.2012, p. 144-147.

Research output: Contribution to journalArticle

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AB - 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.

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