Nanowire-based quantum-dot-sensitized solar cells

Eray Aydil, Kurtis Leschkies, Emil Enache-Pommer, Janice E. Boercker, Uwe Kortshagen, David J. Norris

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report a quantum-dot-sensitized solar cell which combines CdSe quantum dots adsorbed on ZnO nanowires to convert light into electrical current flow. Specifically, an array of ZnO nanowires were grown vertically on a transparent conducting glass substrate in aqueous solutions of methenamine and zinc nitrate. CdSe quantum dots were synthesized separately and capped with mercaptopropionic acid. Following, the quantum dots were attached to the surface of the nanowires to form a photosensitized anode where the ZnO nanowire surfaces were decorated with a monolayer of CdSe quantum dots. A platinized transparent conducting oxide photocathode and the nanowire photoanode were positioned face-to-face and the space between the anode and the cathode was filled with an electrolyte. When illuminated with visible light, the excited CdSe quantum dots injected electrons across the quantum dot-nanowire interface in to the ZnO nanowire. The morphology of the nanowires then provided the photoinjected electrons with a direct electrical pathway to the transparent conducting oxide anode. These solar cells exhibited short-circuit currents ranging from 1-2 mA/cm2 and open-circuit voltages of ∼0.6 V when illuminated with 100 mW/cm2 simulated AM1.5 spectrum. The internal quantum efficiency (IQE) of this QDSSC in the spectral range covering the first excitonic transition (∼500-600 nm) was 50-60%.

Original languageEnglish (US)
Title of host publicationAmerican Chemical Society - 235th National Meeting, Abstracts of Scientific Papers
StatePublished - Dec 1 2008
Event235th National Meeting of the American Chemical Society, ACS 2008 - New Orleans, LA, United States
Duration: Apr 6 2008Apr 10 2008

Other

Other235th National Meeting of the American Chemical Society, ACS 2008
CountryUnited States
CityNew Orleans, LA
Period4/6/084/10/08

Fingerprint

Semiconductor quantum dots
Nanowires
Solar cells
Anodes
Oxides
Methenamine
Photocathodes
Electrons
Open circuit voltage
Quantum efficiency
Short circuit currents
Electrolytes
Nitrates
Monolayers
Cathodes
Zinc
Glass
Acids
Substrates

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Aydil, E., Leschkies, K., Enache-Pommer, E., Boercker, J. E., Kortshagen, U., & Norris, D. J. (2008). Nanowire-based quantum-dot-sensitized solar cells. In American Chemical Society - 235th National Meeting, Abstracts of Scientific Papers

Nanowire-based quantum-dot-sensitized solar cells. / Aydil, Eray; Leschkies, Kurtis; Enache-Pommer, Emil; Boercker, Janice E.; Kortshagen, Uwe; Norris, David J.

American Chemical Society - 235th National Meeting, Abstracts of Scientific Papers. 2008.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Aydil, E, Leschkies, K, Enache-Pommer, E, Boercker, JE, Kortshagen, U & Norris, DJ 2008, Nanowire-based quantum-dot-sensitized solar cells. in American Chemical Society - 235th National Meeting, Abstracts of Scientific Papers. 235th National Meeting of the American Chemical Society, ACS 2008, New Orleans, LA, United States, 4/6/08.
Aydil E, Leschkies K, Enache-Pommer E, Boercker JE, Kortshagen U, Norris DJ. Nanowire-based quantum-dot-sensitized solar cells. In American Chemical Society - 235th National Meeting, Abstracts of Scientific Papers. 2008
Aydil, Eray ; Leschkies, Kurtis ; Enache-Pommer, Emil ; Boercker, Janice E. ; Kortshagen, Uwe ; Norris, David J. / Nanowire-based quantum-dot-sensitized solar cells. American Chemical Society - 235th National Meeting, Abstracts of Scientific Papers. 2008.
@inproceedings{0843882df7254082a9814070fda79f33,
title = "Nanowire-based quantum-dot-sensitized solar cells",
abstract = "We report a quantum-dot-sensitized solar cell which combines CdSe quantum dots adsorbed on ZnO nanowires to convert light into electrical current flow. Specifically, an array of ZnO nanowires were grown vertically on a transparent conducting glass substrate in aqueous solutions of methenamine and zinc nitrate. CdSe quantum dots were synthesized separately and capped with mercaptopropionic acid. Following, the quantum dots were attached to the surface of the nanowires to form a photosensitized anode where the ZnO nanowire surfaces were decorated with a monolayer of CdSe quantum dots. A platinized transparent conducting oxide photocathode and the nanowire photoanode were positioned face-to-face and the space between the anode and the cathode was filled with an electrolyte. When illuminated with visible light, the excited CdSe quantum dots injected electrons across the quantum dot-nanowire interface in to the ZnO nanowire. The morphology of the nanowires then provided the photoinjected electrons with a direct electrical pathway to the transparent conducting oxide anode. These solar cells exhibited short-circuit currents ranging from 1-2 mA/cm2 and open-circuit voltages of ∼0.6 V when illuminated with 100 mW/cm2 simulated AM1.5 spectrum. The internal quantum efficiency (IQE) of this QDSSC in the spectral range covering the first excitonic transition (∼500-600 nm) was 50-60{\%}.",
author = "Eray Aydil and Kurtis Leschkies and Emil Enache-Pommer and Boercker, {Janice E.} and Uwe Kortshagen and Norris, {David J.}",
year = "2008",
month = "12",
day = "1",
language = "English (US)",
isbn = "9780841269859",
booktitle = "American Chemical Society - 235th National Meeting, Abstracts of Scientific Papers",

}

TY - GEN

T1 - Nanowire-based quantum-dot-sensitized solar cells

AU - Aydil, Eray

AU - Leschkies, Kurtis

AU - Enache-Pommer, Emil

AU - Boercker, Janice E.

AU - Kortshagen, Uwe

AU - Norris, David J.

PY - 2008/12/1

Y1 - 2008/12/1

N2 - We report a quantum-dot-sensitized solar cell which combines CdSe quantum dots adsorbed on ZnO nanowires to convert light into electrical current flow. Specifically, an array of ZnO nanowires were grown vertically on a transparent conducting glass substrate in aqueous solutions of methenamine and zinc nitrate. CdSe quantum dots were synthesized separately and capped with mercaptopropionic acid. Following, the quantum dots were attached to the surface of the nanowires to form a photosensitized anode where the ZnO nanowire surfaces were decorated with a monolayer of CdSe quantum dots. A platinized transparent conducting oxide photocathode and the nanowire photoanode were positioned face-to-face and the space between the anode and the cathode was filled with an electrolyte. When illuminated with visible light, the excited CdSe quantum dots injected electrons across the quantum dot-nanowire interface in to the ZnO nanowire. The morphology of the nanowires then provided the photoinjected electrons with a direct electrical pathway to the transparent conducting oxide anode. These solar cells exhibited short-circuit currents ranging from 1-2 mA/cm2 and open-circuit voltages of ∼0.6 V when illuminated with 100 mW/cm2 simulated AM1.5 spectrum. The internal quantum efficiency (IQE) of this QDSSC in the spectral range covering the first excitonic transition (∼500-600 nm) was 50-60%.

AB - We report a quantum-dot-sensitized solar cell which combines CdSe quantum dots adsorbed on ZnO nanowires to convert light into electrical current flow. Specifically, an array of ZnO nanowires were grown vertically on a transparent conducting glass substrate in aqueous solutions of methenamine and zinc nitrate. CdSe quantum dots were synthesized separately and capped with mercaptopropionic acid. Following, the quantum dots were attached to the surface of the nanowires to form a photosensitized anode where the ZnO nanowire surfaces were decorated with a monolayer of CdSe quantum dots. A platinized transparent conducting oxide photocathode and the nanowire photoanode were positioned face-to-face and the space between the anode and the cathode was filled with an electrolyte. When illuminated with visible light, the excited CdSe quantum dots injected electrons across the quantum dot-nanowire interface in to the ZnO nanowire. The morphology of the nanowires then provided the photoinjected electrons with a direct electrical pathway to the transparent conducting oxide anode. These solar cells exhibited short-circuit currents ranging from 1-2 mA/cm2 and open-circuit voltages of ∼0.6 V when illuminated with 100 mW/cm2 simulated AM1.5 spectrum. The internal quantum efficiency (IQE) of this QDSSC in the spectral range covering the first excitonic transition (∼500-600 nm) was 50-60%.

UR - http://www.scopus.com/inward/record.url?scp=77955591853&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955591853&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:77955591853

SN - 9780841269859

BT - American Chemical Society - 235th National Meeting, Abstracts of Scientific Papers

ER -