Raman and photoluminescence investigation of CdS/CdSe quantum dots on TiO2 nanoparticles with multi-walled carbon nanotubes and their application in solar cells

Kun Mu Lee; Sheng Hsiung Chang; Ming Chung Wu; Chun Guey Wu

doi:10.1016/j.vibspec.2015.08.001

Raman and photoluminescence investigation of CdS/CdSe quantum dots on TiO₂ nanoparticles with multi-walled carbon nanotubes and their application in solar cells

Kun Mu Lee, Sheng Hsiung Chang^*, Ming Chung Wu, Chun Guey Wu

^*Corresponding author for this work

Department of Chemical and Materials Engineering

National Central University

Research output: Contribution to journal › Journal Article › peer-review

11 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	66-69
Number of pages	4
Journal	Vibrational Spectroscopy
Volume	80
DOIs	https://doi.org/10.1016/j.vibspec.2015.08.001
State	Published - 05 09 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.

Keywords

Energy transfer
Photoluminescence
Raman scattering

Access to Document

10.1016/j.vibspec.2015.08.001

Cite this

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title = "Raman and photoluminescence investigation of CdS/CdSe quantum dots on TiO2 nanoparticles with multi-walled carbon nanotubes and their application in solar cells",

abstract = "Raman spectroscopy and photoluminescence (PL) were used to investigate the improved short-circuit current density (JSC) 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 JSC in CdS/CdSe QD-sensitized solar cells can be explained as due to the better electron injections.",

keywords = "Energy transfer, Photoluminescence, Raman scattering",

author = "Lee, {Kun Mu} and Chang, {Sheng Hsiung} and Wu, {Ming Chung} and Wu, {Chun Guey}",

year = "2015",

month = sep,

day = "5",

doi = "10.1016/j.vibspec.2015.08.001",

language = "英语",

volume = "80",

pages = "66--69",

journal = "Vibrational Spectroscopy",

issn = "0924-2031",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Raman and photoluminescence investigation of CdS/CdSe quantum dots on TiO2 nanoparticles with multi-walled carbon nanotubes and their application in solar cells

AU - Lee, Kun Mu

AU - Chang, Sheng Hsiung

AU - Wu, Ming Chung

AU - Wu, Chun Guey

PY - 2015/9/5

Y1 - 2015/9/5

N2 - Raman spectroscopy and photoluminescence (PL) were used to investigate the improved short-circuit current density (JSC) 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 JSC in CdS/CdSe QD-sensitized solar cells can be explained as due to the better electron injections.

AB - Raman spectroscopy and photoluminescence (PL) were used to investigate the improved short-circuit current density (JSC) 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 JSC in CdS/CdSe QD-sensitized solar cells can be explained as due to the better electron injections.

KW - Energy transfer

KW - Photoluminescence

KW - Raman scattering

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