Journal
VIBRATIONAL SPECTROSCOPY
Volume 80, Issue -, Pages 66-69Publisher
ELSEVIER
DOI: 10.1016/j.vibspec.2015.08.001
Keywords
Energy transfer; Raman scattering; Photoluminescence
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Funding
- National Science Council [NSC 101-2731-M-008-002-MY3]
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Raman spectroscopy and photoluminescence (PL) were used to investigate the improved short-circuit current density (J(SC)) of CdS/CdSe quantum dot (QD)-sensitized solar cells with multi-walled carbon nanotubes (MWCNTs). Raman and PL experiments were carried out in order to explore the hot-electron and cold-electron injections, respectively. The experimental results showed that the concentration of MWCNTs influences the hot-electron and cold-electron injections from CdS/CdSe QDs to TiO2 nanoparticles. Therefore, the improved J(SC) in CdS/CdSe QD-sensitized solar cells can be explained as due to the better electron injections. (C) 2015 Elsevier B.V. All rights reserved.
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