Multiple Exciton Generation Solar Cells: Effects of Nanocrystal Shape on Quantum Efficiency

Joseph Luther; Matthew Beard; Ashley Marshall

doi:10.1109/PVSC.2014.6925101

Multiple Exciton Generation Solar Cells: Effects of Nanocrystal Shape on Quantum Efficiency

Joseph Luther, Matthew Beard, Ashley Marshall

Chemistry and Nanoscience

Research output: Contribution to conference › Paper › peer-review

2 Scopus Citations

Abstract

Semiconductor nanocrystals (NCs) have the ability to perform a process, termed multiple exciton generation (or MEG), which produces two electrons for every absorbed photon. This has been experimentally confirmed using ultrafast spectroscopic techniques for many semiconductor NC families. The shape of the NCs has been found to play an important role in the efficiency of MEG. Spherical PbSe NCs have been used to fabricate devices that exhibit greater than 100% quantum efficiencies, here we report on the use of NC morphologies and hybrid NC assemblies that can increase the power conversion efficiency in a device.

Original language	American English
Pages	1077-1079
Number of pages	3
DOIs	https://doi.org/10.1109/PVSC.2014.6925101 https://doi.org/10.1109/PVSC.2014.6925101
State	Published - 15 Oct 2014
Event	40th IEEE Photovoltaic Specialist Conference, PVSC 2014 - Denver, United States Duration: 8 Jun 2014 → 13 Jun 2014

Conference

Conference	40th IEEE Photovoltaic Specialist Conference, PVSC 2014
Country/Territory	United States
City	Denver
Period	8/06/14 → 13/06/14

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

NREL Publication Number

NREL/CP-5900-61361

Keywords

Lead chalcogenides
multiple exciton generation
nanocrystals
photovoltaic cells

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title = "Multiple Exciton Generation Solar Cells: Effects of Nanocrystal Shape on Quantum Efficiency",

abstract = "Semiconductor nanocrystals (NCs) have the ability to perform a process, termed multiple exciton generation (or MEG), which produces two electrons for every absorbed photon. This has been experimentally confirmed using ultrafast spectroscopic techniques for many semiconductor NC families. The shape of the NCs has been found to play an important role in the efficiency of MEG. Spherical PbSe NCs have been used to fabricate devices that exhibit greater than 100% quantum efficiencies, here we report on the use of NC morphologies and hybrid NC assemblies that can increase the power conversion efficiency in a device.",

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author = "Joseph Luther and Matthew Beard and Ashley Marshall",

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year = "2014",

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doi = "10.1109/PVSC.2014.6925101",

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AU - Luther, Joseph

AU - Beard, Matthew

AU - Marshall, Ashley

PY - 2014/10/15

Y1 - 2014/10/15

N2 - Semiconductor nanocrystals (NCs) have the ability to perform a process, termed multiple exciton generation (or MEG), which produces two electrons for every absorbed photon. This has been experimentally confirmed using ultrafast spectroscopic techniques for many semiconductor NC families. The shape of the NCs has been found to play an important role in the efficiency of MEG. Spherical PbSe NCs have been used to fabricate devices that exhibit greater than 100% quantum efficiencies, here we report on the use of NC morphologies and hybrid NC assemblies that can increase the power conversion efficiency in a device.

AB - Semiconductor nanocrystals (NCs) have the ability to perform a process, termed multiple exciton generation (or MEG), which produces two electrons for every absorbed photon. This has been experimentally confirmed using ultrafast spectroscopic techniques for many semiconductor NC families. The shape of the NCs has been found to play an important role in the efficiency of MEG. Spherical PbSe NCs have been used to fabricate devices that exhibit greater than 100% quantum efficiencies, here we report on the use of NC morphologies and hybrid NC assemblies that can increase the power conversion efficiency in a device.

KW - Lead chalcogenides

KW - multiple exciton generation

KW - nanocrystals

KW - photovoltaic cells

UR - http://www.scopus.com/inward/record.url?scp=84912104297&partnerID=8YFLogxK

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DO - 10.1109/PVSC.2014.6925101

M3 - Paper

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SP - 1077

EP - 1079

T2 - 40th IEEE Photovoltaic Specialist Conference, PVSC 2014

Y2 - 8 June 2014 through 13 June 2014

ER -

Multiple Exciton Generation Solar Cells: Effects of Nanocrystal Shape on Quantum Efficiency

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

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