Organized assemblies of single wall carbon nanotubes and porphyrin for photochemical solar cells: Charge injection from excited porphyrin into single-walled carbon nanotubes

Taku Hasobe, Shunichi Fukuzumi, Prashant V. Kamat

Research output: Contribution to journalArticle

181 Citations (Scopus)

Abstract

Photochemical solar cells have been constructed from organized assemblies of single-walled carbon nanotubes (SWCNT) and protonated porphyrin on nanostructured SnO2 electrodes. The protonated form of porphyrin (H4P2+) and SWCNT composites form 0.5-3.0 μm-sized rodlike structures and they can be assembled onto nanostructured SnO2 films [optically transparent electrode OTE/SnO2] by an electrophoretic deposition method. These organized assemblies are photoactive and absorb strongly in the entire visible region. The incident photon to photocurrent efficiency (IPCE) of OTE/SnO2/SWCNT-H4P 2+ is ∼13% at an applied potential of 0.2 V versus saturated calomel electrode. Femtosecond pump-probe spectroscopy experiments confirm the decay of the excited porphyrin in the SWCNT-H4P2+ assembly as it injects electrons into SWCNT. The dual role of SWCNT in promoting photoinduced charge separation and facilitating charge transport is presented.

Original languageEnglish
Pages (from-to)25477-25484
Number of pages8
JournalJournal of Physical Chemistry B
Volume110
Issue number50
DOIs
Publication statusPublished - 2006 Dec 21
Externally publishedYes

Fingerprint

Charge injection
Carbon Nanotubes
Porphyrins
Single-walled carbon nanotubes (SWCN)
porphyrins
assemblies
Carbon nanotubes
Solar cells
solar cells
carbon nanotubes
injection
Electrodes
electrodes
polarization (charge separation)
Photocurrents
photocurrents
Charge transfer
Photons
assembly
Pumps

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Organized assemblies of single wall carbon nanotubes and porphyrin for photochemical solar cells : Charge injection from excited porphyrin into single-walled carbon nanotubes. / Hasobe, Taku; Fukuzumi, Shunichi; Kamat, Prashant V.

In: Journal of Physical Chemistry B, Vol. 110, No. 50, 21.12.2006, p. 25477-25484.

Research output: Contribution to journalArticle

@article{21dfaa662bef4f88891a77a8b6c3fc1c,
title = "Organized assemblies of single wall carbon nanotubes and porphyrin for photochemical solar cells: Charge injection from excited porphyrin into single-walled carbon nanotubes",
abstract = "Photochemical solar cells have been constructed from organized assemblies of single-walled carbon nanotubes (SWCNT) and protonated porphyrin on nanostructured SnO2 electrodes. The protonated form of porphyrin (H4P2+) and SWCNT composites form 0.5-3.0 μm-sized rodlike structures and they can be assembled onto nanostructured SnO2 films [optically transparent electrode OTE/SnO2] by an electrophoretic deposition method. These organized assemblies are photoactive and absorb strongly in the entire visible region. The incident photon to photocurrent efficiency (IPCE) of OTE/SnO2/SWCNT-H4P 2+ is ∼13{\%} at an applied potential of 0.2 V versus saturated calomel electrode. Femtosecond pump-probe spectroscopy experiments confirm the decay of the excited porphyrin in the SWCNT-H4P2+ assembly as it injects electrons into SWCNT. The dual role of SWCNT in promoting photoinduced charge separation and facilitating charge transport is presented.",
author = "Taku Hasobe and Shunichi Fukuzumi and Kamat, {Prashant V.}",
year = "2006",
month = "12",
day = "21",
doi = "10.1021/jp064845u",
language = "English",
volume = "110",
pages = "25477--25484",
journal = "Journal of Physical Chemistry B Materials",
issn = "1520-6106",
publisher = "American Chemical Society",
number = "50",

}

TY - JOUR

T1 - Organized assemblies of single wall carbon nanotubes and porphyrin for photochemical solar cells

T2 - Charge injection from excited porphyrin into single-walled carbon nanotubes

AU - Hasobe, Taku

AU - Fukuzumi, Shunichi

AU - Kamat, Prashant V.

PY - 2006/12/21

Y1 - 2006/12/21

N2 - Photochemical solar cells have been constructed from organized assemblies of single-walled carbon nanotubes (SWCNT) and protonated porphyrin on nanostructured SnO2 electrodes. The protonated form of porphyrin (H4P2+) and SWCNT composites form 0.5-3.0 μm-sized rodlike structures and they can be assembled onto nanostructured SnO2 films [optically transparent electrode OTE/SnO2] by an electrophoretic deposition method. These organized assemblies are photoactive and absorb strongly in the entire visible region. The incident photon to photocurrent efficiency (IPCE) of OTE/SnO2/SWCNT-H4P 2+ is ∼13% at an applied potential of 0.2 V versus saturated calomel electrode. Femtosecond pump-probe spectroscopy experiments confirm the decay of the excited porphyrin in the SWCNT-H4P2+ assembly as it injects electrons into SWCNT. The dual role of SWCNT in promoting photoinduced charge separation and facilitating charge transport is presented.

AB - Photochemical solar cells have been constructed from organized assemblies of single-walled carbon nanotubes (SWCNT) and protonated porphyrin on nanostructured SnO2 electrodes. The protonated form of porphyrin (H4P2+) and SWCNT composites form 0.5-3.0 μm-sized rodlike structures and they can be assembled onto nanostructured SnO2 films [optically transparent electrode OTE/SnO2] by an electrophoretic deposition method. These organized assemblies are photoactive and absorb strongly in the entire visible region. The incident photon to photocurrent efficiency (IPCE) of OTE/SnO2/SWCNT-H4P 2+ is ∼13% at an applied potential of 0.2 V versus saturated calomel electrode. Femtosecond pump-probe spectroscopy experiments confirm the decay of the excited porphyrin in the SWCNT-H4P2+ assembly as it injects electrons into SWCNT. The dual role of SWCNT in promoting photoinduced charge separation and facilitating charge transport is presented.

UR - http://www.scopus.com/inward/record.url?scp=33846680074&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846680074&partnerID=8YFLogxK

U2 - 10.1021/jp064845u

DO - 10.1021/jp064845u

M3 - Article

C2 - 17165996

AN - SCOPUS:33846680074

VL - 110

SP - 25477

EP - 25484

JO - Journal of Physical Chemistry B Materials

JF - Journal of Physical Chemistry B Materials

SN - 1520-6106

IS - 50

ER -