Charge Recombination Suppressed by Destructive Quantum Interference in Heterojunction Materials

Roel Tempelaar; L. Jan Anton Koster; Remco W. A. Havenith; Jasper Knoester; Thomas L. C. Jansen

doi:10.1021/acs.jpclett.5b02580

Charge Recombination Suppressed by Destructive Quantum Interference in Heterojunction Materials

Roel Tempelaar, L. Jan Anton Koster, Remco W. A. Havenith, Jasper Knoester, Thomas L. C. Jansen^*

^*Corresponding author for this work

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Abstract

We show that charge recombination in ordered heterojunctions depends sensitively on the degree of coherent delocalization of charges at the donor acceptor interface. Depending on the relative sign of the electron and hole transfer integrals, such delocalization can dramatically suppress recombination through destructive quantum interference. This could explain why measured recombination rates are significantly lower than predictions based on Langevin theory for a variety of organic bulk heterojunctions. Moreover, it opens up a design strategy for photovoltaic devices with enhanced efficiencies through coherently suppressed charge recombination.

Original language	English
Pages (from-to)	198-203
Number of pages	6
Journal	The Journal of Physical Chemistry Letters
Volume	7
Issue number	1
DOIs	https://doi.org/10.1021/acs.jpclett.5b02580
Publication status	Published - 7-Jan-2016

Keywords

SENSITIZED SOLAR-CELLS
BIMOLECULAR RECOMBINATION
ORGANIC PHOTOVOLTAICS
TRANSPORT

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10.1021/acs.jpclett.5b02580

Charge Recombination Suppressed by Destructive QuantumFinal publisher's version, 991 KBLicence: Taverne

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9 Citations
1 Erratum

Correction to “Charge Recombination Suppressed by Destructive Quantum Interference in Heterojunction Materials”
Tempelaar, R., Koster, L. J. A., Havenith, R. W. A., Knoester, J. & Jansen, T. L. C., 15-Sept-2016, In: The Journal of Physical Chemistry Letters. 7, 18, p. 3659-3659 1 p.
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title = "Charge Recombination Suppressed by Destructive Quantum Interference in Heterojunction Materials",

abstract = "We show that charge recombination in ordered heterojunctions depends sensitively on the degree of coherent delocalization of charges at the donor acceptor interface. Depending on the relative sign of the electron and hole transfer integrals, such delocalization can dramatically suppress recombination through destructive quantum interference. This could explain why measured recombination rates are significantly lower than predictions based on Langevin theory for a variety of organic bulk heterojunctions. Moreover, it opens up a design strategy for photovoltaic devices with enhanced efficiencies through coherently suppressed charge recombination.",

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AU - Koster, L. Jan Anton

AU - Havenith, Remco W. A.

AU - Knoester, Jasper

AU - Jansen, Thomas L. C.

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N2 - We show that charge recombination in ordered heterojunctions depends sensitively on the degree of coherent delocalization of charges at the donor acceptor interface. Depending on the relative sign of the electron and hole transfer integrals, such delocalization can dramatically suppress recombination through destructive quantum interference. This could explain why measured recombination rates are significantly lower than predictions based on Langevin theory for a variety of organic bulk heterojunctions. Moreover, it opens up a design strategy for photovoltaic devices with enhanced efficiencies through coherently suppressed charge recombination.

AB - We show that charge recombination in ordered heterojunctions depends sensitively on the degree of coherent delocalization of charges at the donor acceptor interface. Depending on the relative sign of the electron and hole transfer integrals, such delocalization can dramatically suppress recombination through destructive quantum interference. This could explain why measured recombination rates are significantly lower than predictions based on Langevin theory for a variety of organic bulk heterojunctions. Moreover, it opens up a design strategy for photovoltaic devices with enhanced efficiencies through coherently suppressed charge recombination.

KW - SENSITIZED SOLAR-CELLS

KW - BIMOLECULAR RECOMBINATION

KW - ORGANIC PHOTOVOLTAICS

KW - TRANSPORT

U2 - 10.1021/acs.jpclett.5b02580

DO - 10.1021/acs.jpclett.5b02580

M3 - Article

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EP - 203

JO - The Journal of Physical Chemistry Letters

JF - The Journal of Physical Chemistry Letters

IS - 1

ER -

Charge Recombination Suppressed by Destructive Quantum Interference in Heterojunction Materials

Abstract

Keywords

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Correction to “Charge Recombination Suppressed by Destructive Quantum Interference in Heterojunction Materials”

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