Solar cells based on junctions between colloidal Pbse nanocrystals and thin ZnO films

Kurtis S. Leschkies; Timothy J. Beatty; Moon Sung Kang; David J. Norris; Eray S. Aydil

doi:10.1021/nn901139d

Solar cells based on junctions between colloidal Pbse nanocrystals and thin ZnO films

Kurtis S. Leschkies, Timothy J. Beatty, Moon Sung Kang, David J. Norris, Eray S. Aydil

Chemical and Biomolecular Engineering

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

Abstract

We report a new type of excitonic solar cell based on planar heterojunctions between PbSe semiconductor nanocrystals and thin ZnO films. These solar cells generate large photocurrents and higher photovoltages compared to Schottky cells assembled with similar nanocrystal films. When illuminated with 100 mW/cm² simulated AM1.5 spectrum, these solar cells exhibit short-circuit currents between 12 and 15 mA/cm², open-circuit voltages up to 0.45 V, and a power conversion efficiency of 1.6%. The photovoltage depends on the size of the nanocrystals, increasing linearly with their effective band gap energy.

Original language	English (US)
Pages (from-to)	3638-3648
Number of pages	11
Journal	ACS nano
Volume	3
Issue number	11
DOIs	https://doi.org/10.1021/nn901139d
State	Published - Nov 24 2009

Keywords

Excitonic solar cell
Nanocrystal
PbSe
Quantum dot
Solar cell
ZnO

ASJC Scopus subject areas

General Materials Science
General Engineering
General Physics and Astronomy

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10.1021/nn901139d

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abstract = "We report a new type of excitonic solar cell based on planar heterojunctions between PbSe semiconductor nanocrystals and thin ZnO films. These solar cells generate large photocurrents and higher photovoltages compared to Schottky cells assembled with similar nanocrystal films. When illuminated with 100 mW/cm2 simulated AM1.5 spectrum, these solar cells exhibit short-circuit currents between 12 and 15 mA/cm2, open-circuit voltages up to 0.45 V, and a power conversion efficiency of 1.6%. The photovoltage depends on the size of the nanocrystals, increasing linearly with their effective band gap energy.",

keywords = "Excitonic solar cell, Nanocrystal, PbSe, Quantum dot, Solar cell, ZnO",

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AU - Leschkies, Kurtis S.

AU - Beatty, Timothy J.

AU - Kang, Moon Sung

AU - Norris, David J.

AU - Aydil, Eray S.

PY - 2009/11/24

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N2 - We report a new type of excitonic solar cell based on planar heterojunctions between PbSe semiconductor nanocrystals and thin ZnO films. These solar cells generate large photocurrents and higher photovoltages compared to Schottky cells assembled with similar nanocrystal films. When illuminated with 100 mW/cm2 simulated AM1.5 spectrum, these solar cells exhibit short-circuit currents between 12 and 15 mA/cm2, open-circuit voltages up to 0.45 V, and a power conversion efficiency of 1.6%. The photovoltage depends on the size of the nanocrystals, increasing linearly with their effective band gap energy.

AB - We report a new type of excitonic solar cell based on planar heterojunctions between PbSe semiconductor nanocrystals and thin ZnO films. These solar cells generate large photocurrents and higher photovoltages compared to Schottky cells assembled with similar nanocrystal films. When illuminated with 100 mW/cm2 simulated AM1.5 spectrum, these solar cells exhibit short-circuit currents between 12 and 15 mA/cm2, open-circuit voltages up to 0.45 V, and a power conversion efficiency of 1.6%. The photovoltage depends on the size of the nanocrystals, increasing linearly with their effective band gap energy.

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KW - Nanocrystal

KW - PbSe

KW - Quantum dot

KW - Solar cell

KW - ZnO

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Solar cells based on junctions between colloidal Pbse nanocrystals and thin ZnO films

Abstract

Keywords

ASJC Scopus subject areas

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