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Charge recombination suppressed by destructive quantum interference in heterojunction materials

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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.
Keywords
SENSITIZED SOLAR-CELLS, BIMOLECULAR RECOMBINATION, ORGANIC, PHOTOVOLTAICS, TRANSPORT

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MLA
Tempelaar, Roel, L Jan Anton Koster, Remco Havenith, et al. “Charge Recombination Suppressed by Destructive Quantum Interference in Heterojunction Materials.” JOURNAL OF PHYSICAL CHEMISTRY LETTERS 7.1 (2016): 198–203. Print.
APA
Tempelaar, R., Koster, L. J. A., Havenith, R., Knoester, J., & Jansen, T. L. (2016). Charge recombination suppressed by destructive quantum interference in heterojunction materials. JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 7(1), 198–203.
Chicago author-date
Tempelaar, Roel, L Jan Anton Koster, Remco Havenith, Jasper Knoester, and Thomas LC Jansen. 2016. “Charge Recombination Suppressed by Destructive Quantum Interference in Heterojunction Materials.” Journal of Physical Chemistry Letters 7 (1): 198–203.
Chicago author-date (all authors)
Tempelaar, Roel, L Jan Anton Koster, Remco Havenith, Jasper Knoester, and Thomas LC Jansen. 2016. “Charge Recombination Suppressed by Destructive Quantum Interference in Heterojunction Materials.” Journal of Physical Chemistry Letters 7 (1): 198–203.
Vancouver
1.
Tempelaar R, Koster LJA, Havenith R, Knoester J, Jansen TL. Charge recombination suppressed by destructive quantum interference in heterojunction materials. JOURNAL OF PHYSICAL CHEMISTRY LETTERS. 2016;7(1):198–203.
IEEE
[1]
R. Tempelaar, L. J. A. Koster, R. Havenith, J. Knoester, and T. L. Jansen, “Charge recombination suppressed by destructive quantum interference in heterojunction materials,” JOURNAL OF PHYSICAL CHEMISTRY LETTERS, vol. 7, no. 1, pp. 198–203, 2016.
@article{8549876,
  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.},
  author       = {Tempelaar, Roel and Koster, L Jan Anton and Havenith, Remco and Knoester, Jasper and Jansen, Thomas LC},
  issn         = {1948-7185},
  journal      = {JOURNAL OF PHYSICAL CHEMISTRY LETTERS},
  keywords     = {SENSITIZED SOLAR-CELLS,BIMOLECULAR RECOMBINATION,ORGANIC,PHOTOVOLTAICS,TRANSPORT},
  language     = {eng},
  number       = {1},
  pages        = {198--203},
  title        = {Charge recombination suppressed by destructive quantum interference in heterojunction materials},
  url          = {http://dx.doi.org/10.1021/acs.jpclett.5b02580},
  volume       = {7},
  year         = {2016},
}

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