Multijunction organic photovoltaics with a broad spectral response

Jill A. MacKo, Richard R. Lunt, Timothy P. Osedach, Patrick R. Brown, Miles C. Barr, Karen K. Gleason, Vladimir Bulovic

    Research output: Contribution to journalArticle

    • 12 Citations

    Abstract

    We demonstrate series-integrated multijunction organic photovoltaics fabricated monolithically by vapor-deposition in a transposed subcell order with the near-infrared-absorbing subcell in front of the green-absorbing subcell. This transposed subcell order is enabled by the highly complementary absorption spectra of a near-infrared-absorbing visibly-transparent subcell and a visible-absorbing subcell and motivated by the non-spatially-uniform optical intensity in nanoscale photovoltaics. The subcell order and thicknesses are optimized via transfer-matrix formalism and short-circuit current simulations. An efficient charge recombination zone consisting of layers of BCP/Ag/MoOx leads to negligible voltage and series-resistance losses. Under 1-sun illumination the multijunction solar cells exhibit a power conversion efficiency of 5.5 ± 0.2% with an FF of 0.685 ± 0.002 and a V OC of 1.65 ± 0.02 V, corresponding to the sum of the V OC of the component subcells. These devices exhibit a broad spectral response (in the wavelength range of 350 nm to 850 nm) but are limited by subcell external quantum efficiencies between 20% and 30% over the photoactive spectrum. This journal is

    Original languageEnglish (US)
    Pages (from-to)14548-14553
    Number of pages6
    JournalPhysical Chemistry Chemical Physics
    Volume14
    Issue number42
    DOIs
    StatePublished - Nov 14 2012

    Profile

    Biological Availability
    spectral sensitivity
    Methacholine Compounds
    Enzyme Reactivators
    Acetohexamide
    Pyridazines
    Carbuncle
    Garbage
    Vapor deposition
    Brain Death
    Conversion efficiency
    Solar cells
    Wavelength
    Galactosephosphates
    short circuit currents
    quantum efficiency
    sun
    solar cells
    illumination
    vapor deposition

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Physics and Astronomy(all)

    Cite this

    MacKo, J. A., Lunt, R. R., Osedach, T. P., Brown, P. R., Barr, M. C., Gleason, K. K., & Bulovic, V. (2012). Multijunction organic photovoltaics with a broad spectral response. Physical Chemistry Chemical Physics, 14(42), 14548-14553. DOI: 10.1039/c2cp43000b

    Multijunction organic photovoltaics with a broad spectral response. / MacKo, Jill A.; Lunt, Richard R.; Osedach, Timothy P.; Brown, Patrick R.; Barr, Miles C.; Gleason, Karen K.; Bulovic, Vladimir.

    In: Physical Chemistry Chemical Physics, Vol. 14, No. 42, 14.11.2012, p. 14548-14553.

    Research output: Contribution to journalArticle

    MacKo, JA, Lunt, RR, Osedach, TP, Brown, PR, Barr, MC, Gleason, KK & Bulovic, V 2012, 'Multijunction organic photovoltaics with a broad spectral response' Physical Chemistry Chemical Physics, vol 14, no. 42, pp. 14548-14553. DOI: 10.1039/c2cp43000b
    MacKo JA, Lunt RR, Osedach TP, Brown PR, Barr MC, Gleason KK et al. Multijunction organic photovoltaics with a broad spectral response. Physical Chemistry Chemical Physics. 2012 Nov 14;14(42):14548-14553. Available from, DOI: 10.1039/c2cp43000b

    MacKo, Jill A.; Lunt, Richard R.; Osedach, Timothy P.; Brown, Patrick R.; Barr, Miles C.; Gleason, Karen K.; Bulovic, Vladimir / Multijunction organic photovoltaics with a broad spectral response.

    In: Physical Chemistry Chemical Physics, Vol. 14, No. 42, 14.11.2012, p. 14548-14553.

    Research output: Contribution to journalArticle

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