Quantum Dot Solar Cells with Multiple Exciton Generation

Quantum Dot Solar Cells with Multiple Exciton Generation

Chemistry and Nanoscience

Research output: Contribution to conference › Paper

Abstract

We have measured the quantum yield of the multiple exciton generation (MEG) process in quantum dots (QDs) of the lead-salt semiconductor family (PbSe, PbTe, and PbS) using fs pump-probe transient absorption measurements. Very high quantum yields (up to 300%) for charge carrier generation from MEG have been measured in all of the Pb-VI QDs. We have calculated the potential maximum performance ofvarious MEG QD solar cells in the detailed balance limit. We examined a two-cell tandem PV device with singlet fission (SF), QD, and normal dye (N) absorbers in the nine possible series-connected combinations to compare the tandem combinations and identify the combinations with the highest theoretical efficiency. We also calculated the maximum efficiency of an idealized single-gap MEG QD solarcell with M multiplications and its performance under solar concentration.

Original language	American English
Number of pages	5
State	Published - 2005
Event	2005 DOE Solar Energy Technologies Program Review Meeting - Denver, Colorado Duration: 7 Nov 2005 → 10 Nov 2005

Conference

Conference	2005 DOE Solar Energy Technologies Program Review Meeting
City	Denver, Colorado
Period	7/11/05 → 10/11/05

Bibliographical note

Presented at the 2005 DOE Solar Energy Technologies Program Review Meeting held November 7-10, 2005 in Denver, Colorado. Also included in the proceedings available on CD-ROM (DOE/GO-102006-2245; NREL/CD-520-38557)

NREL Publication Number

NREL/CP-590-38992

Keywords

NREL
photovoltaics (PV)
PV
quantum dots (QD)
solar
solar cells

Access to Document

https://www.nrel.gov/docs/fy06osti/38992.pdf

Cite this

@conference{dc26891e36aa4c529272bf7f14e5e159,

title = "Quantum Dot Solar Cells with Multiple Exciton Generation",

abstract = "We have measured the quantum yield of the multiple exciton generation (MEG) process in quantum dots (QDs) of the lead-salt semiconductor family (PbSe, PbTe, and PbS) using fs pump-probe transient absorption measurements. Very high quantum yields (up to 300%) for charge carrier generation from MEG have been measured in all of the Pb-VI QDs. We have calculated the potential maximum performance ofvarious MEG QD solar cells in the detailed balance limit. We examined a two-cell tandem PV device with singlet fission (SF), QD, and normal dye (N) absorbers in the nine possible series-connected combinations to compare the tandem combinations and identify the combinations with the highest theoretical efficiency. We also calculated the maximum efficiency of an idealized single-gap MEG QD solarcell with M multiplications and its performance under solar concentration.",

keywords = "NREL, photovoltaics (PV), PV, quantum dots (QD), solar, solar cells",

author = "NREL",

note = "Presented at the 2005 DOE Solar Energy Technologies Program Review Meeting held November 7-10, 2005 in Denver, Colorado. Also included in the proceedings available on CD-ROM (DOE/GO-102006-2245; NREL/CD-520-38557); 2005 DOE Solar Energy Technologies Program Review Meeting ; Conference date: 07-11-2005 Through 10-11-2005",

year = "2005",

language = "American English",

}

TY - CONF

T1 - Quantum Dot Solar Cells with Multiple Exciton Generation

AU - NREL, null

N1 - Presented at the 2005 DOE Solar Energy Technologies Program Review Meeting held November 7-10, 2005 in Denver, Colorado. Also included in the proceedings available on CD-ROM (DOE/GO-102006-2245; NREL/CD-520-38557)

PY - 2005

Y1 - 2005

N2 - We have measured the quantum yield of the multiple exciton generation (MEG) process in quantum dots (QDs) of the lead-salt semiconductor family (PbSe, PbTe, and PbS) using fs pump-probe transient absorption measurements. Very high quantum yields (up to 300%) for charge carrier generation from MEG have been measured in all of the Pb-VI QDs. We have calculated the potential maximum performance ofvarious MEG QD solar cells in the detailed balance limit. We examined a two-cell tandem PV device with singlet fission (SF), QD, and normal dye (N) absorbers in the nine possible series-connected combinations to compare the tandem combinations and identify the combinations with the highest theoretical efficiency. We also calculated the maximum efficiency of an idealized single-gap MEG QD solarcell with M multiplications and its performance under solar concentration.

AB - We have measured the quantum yield of the multiple exciton generation (MEG) process in quantum dots (QDs) of the lead-salt semiconductor family (PbSe, PbTe, and PbS) using fs pump-probe transient absorption measurements. Very high quantum yields (up to 300%) for charge carrier generation from MEG have been measured in all of the Pb-VI QDs. We have calculated the potential maximum performance ofvarious MEG QD solar cells in the detailed balance limit. We examined a two-cell tandem PV device with singlet fission (SF), QD, and normal dye (N) absorbers in the nine possible series-connected combinations to compare the tandem combinations and identify the combinations with the highest theoretical efficiency. We also calculated the maximum efficiency of an idealized single-gap MEG QD solarcell with M multiplications and its performance under solar concentration.

KW - NREL

KW - photovoltaics (PV)

KW - PV

KW - quantum dots (QD)

KW - solar

KW - solar cells

M3 - Paper

T2 - 2005 DOE Solar Energy Technologies Program Review Meeting

Y2 - 7 November 2005 through 10 November 2005

ER -

Quantum Dot Solar Cells with Multiple Exciton Generation

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

Access to Document

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