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

  • 13 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

LanguageEnglish (US)
Pages14548-14553
Number of pages6
JournalPhysical Chemistry Chemical Physics
Volume14
Issue number42
DOIs
StatePublished - Nov 14 2012

Profile

short circuit currents
spectral sensitivity
quantum efficiency
sun
solar cells
illumination
vapor deposition
formalism
Infrared radiation
absorption spectra
Vapor deposition
electric potential
Quantum efficiency
wavelengths
Short circuit currents
Sun
Conversion efficiency
Absorption spectra
simulation
Lighting

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. 2012 ; Vol. 14, No. 42. pp. 14548-14553
@article{8bab8ac7319045088b4ec602f9937c60,
title = "Multijunction organic photovoltaics with a broad spectral response",
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",
author = "MacKo, {Jill A.} and Lunt, {Richard R.} and Osedach, {Timothy P.} and Brown, {Patrick R.} and Barr, {Miles C.} and Gleason, {Karen K.} and Vladimir Bulovic",
year = "2012",
month = "11",
day = "14",
doi = "10.1039/c2cp43000b",
language = "English (US)",
volume = "14",
pages = "14548--14553",
journal = "Physical Chemistry Chemical Physics",
issn = "1463-9076",
publisher = "Royal Society of Chemistry",
number = "42",

}

TY - JOUR

T1 - Multijunction organic photovoltaics with a broad spectral response

AU - MacKo,Jill A.

AU - Lunt,Richard R.

AU - Osedach,Timothy P.

AU - Brown,Patrick R.

AU - Barr,Miles C.

AU - Gleason,Karen K.

AU - Bulovic,Vladimir

PY - 2012/11/14

Y1 - 2012/11/14

N2 - 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

AB - 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

UR - http://www.scopus.com/inward/record.url?scp=84867346153&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84867346153&partnerID=8YFLogxK

U2 - 10.1039/c2cp43000b

DO - 10.1039/c2cp43000b

M3 - Article

VL - 14

SP - 14548

EP - 14553

JO - Physical Chemistry Chemical Physics

T2 - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

SN - 1463-9076

IS - 42

ER -