Harvest of near infrared light in PbSe nanocrystal-polymer hybrid photovoltaic cells

Dehu Cui; Jian Xu; Ting Zhu; Gary Paradee; S. Ashok; Michael Gerhold

doi:10.1063/1.2201047

Harvest of near infrared light in PbSe nanocrystal-polymer hybrid photovoltaic cells

Dehu Cui, Jian Xu, Ting Zhu, Gary Paradee, S. Ashok, Michael Gerhold

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Abstract

We report a hybrid photovoltaic cell where PbSe nanocrystals were used to sensitize the conjugated polymer into the infrared. The device exhibited an incident monochromatic photon to current conversion efficiency of 1.3% at λ=805 nm. Under 1 sun AM 1.5 illumination, the infrared response (780 nm<λ<1600 nm) of the embedded nanocrystals contributes to 33% of the overall photocurrent of the photovoltaic cell. The observed intensity dependences of the photocurrents have revealed the pseudomonomolecular recombination kinetics in the nanocrystal quantum dot polymer composite, indicating that the efficiency of the hybrid photovoltaic cells can be enhanced by reducing the potential barriers due to the ligand molecules at the surfaces of nanocrystals.

Original language	English (US)
Article number	183111
Journal	Applied Physics Letters
Volume	88
Issue number	18
DOIs	https://doi.org/10.1063/1.2201047
State	Published - May 1 2006

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2201047

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title = "Harvest of near infrared light in PbSe nanocrystal-polymer hybrid photovoltaic cells",

abstract = "We report a hybrid photovoltaic cell where PbSe nanocrystals were used to sensitize the conjugated polymer into the infrared. The device exhibited an incident monochromatic photon to current conversion efficiency of 1.3% at λ=805 nm. Under 1 sun AM 1.5 illumination, the infrared response (780 nm<λ<1600 nm) of the embedded nanocrystals contributes to 33% of the overall photocurrent of the photovoltaic cell. The observed intensity dependences of the photocurrents have revealed the pseudomonomolecular recombination kinetics in the nanocrystal quantum dot polymer composite, indicating that the efficiency of the hybrid photovoltaic cells can be enhanced by reducing the potential barriers due to the ligand molecules at the surfaces of nanocrystals.",

author = "Dehu Cui and Jian Xu and Ting Zhu and Gary Paradee and S. Ashok and Michael Gerhold",

note = "Funding Information: One of the authors (J.X.) would like to thank Dr. C. W. Murray at IBM T. J. Watson Center and Professor T. E. Mallouk at Penn State University for helpful discussions and technical supports on the synthesis of semiconductor nanocrystals. This work was supported by the National Science Foundation of USA under Grant No. DMR-0213623 and the U. S. Army Research Office under Contract No. DAAD19-02-D-0001. ",

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doi = "10.1063/1.2201047",

language = "English (US)",

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T1 - Harvest of near infrared light in PbSe nanocrystal-polymer hybrid photovoltaic cells

AU - Cui, Dehu

AU - Xu, Jian

AU - Zhu, Ting

AU - Paradee, Gary

AU - Ashok, S.

AU - Gerhold, Michael

N1 - Funding Information: One of the authors (J.X.) would like to thank Dr. C. W. Murray at IBM T. J. Watson Center and Professor T. E. Mallouk at Penn State University for helpful discussions and technical supports on the synthesis of semiconductor nanocrystals. This work was supported by the National Science Foundation of USA under Grant No. DMR-0213623 and the U. S. Army Research Office under Contract No. DAAD19-02-D-0001.

PY - 2006/5/1

Y1 - 2006/5/1

N2 - We report a hybrid photovoltaic cell where PbSe nanocrystals were used to sensitize the conjugated polymer into the infrared. The device exhibited an incident monochromatic photon to current conversion efficiency of 1.3% at λ=805 nm. Under 1 sun AM 1.5 illumination, the infrared response (780 nm<λ<1600 nm) of the embedded nanocrystals contributes to 33% of the overall photocurrent of the photovoltaic cell. The observed intensity dependences of the photocurrents have revealed the pseudomonomolecular recombination kinetics in the nanocrystal quantum dot polymer composite, indicating that the efficiency of the hybrid photovoltaic cells can be enhanced by reducing the potential barriers due to the ligand molecules at the surfaces of nanocrystals.

AB - We report a hybrid photovoltaic cell where PbSe nanocrystals were used to sensitize the conjugated polymer into the infrared. The device exhibited an incident monochromatic photon to current conversion efficiency of 1.3% at λ=805 nm. Under 1 sun AM 1.5 illumination, the infrared response (780 nm<λ<1600 nm) of the embedded nanocrystals contributes to 33% of the overall photocurrent of the photovoltaic cell. The observed intensity dependences of the photocurrents have revealed the pseudomonomolecular recombination kinetics in the nanocrystal quantum dot polymer composite, indicating that the efficiency of the hybrid photovoltaic cells can be enhanced by reducing the potential barriers due to the ligand molecules at the surfaces of nanocrystals.

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DO - 10.1063/1.2201047

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VL - 88

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

M1 - 183111

ER -

Harvest of near infrared light in PbSe nanocrystal-polymer hybrid photovoltaic cells

Abstract

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