Details
| Original language | English |
|---|---|
| Pages (from-to) | 8878-8897 |
| Number of pages | 20 |
| Journal | Optics Express |
| Volume | 28 |
| Issue number | 6 |
| Publication status | Published - 16 Mar 2020 |
Abstract
The rise in the power conversion efficiency (PCE) of perovskite solar cells has triggered enormous interest in perovskite-based tandem photovoltaics. One key challenge is to achieve high transmission of low energy photons into the bottom cell. Here, nanostructured front electrodes for 4-terminal perovskite/crystalline-silicon (perovskite/c-Si) tandem solar cells are developed by conformal deposition of indium tin oxide (ITO) on self-assembled polystyrene nanopillars. The nanostructured ITO is optimized for reduced reflection and increased transmission with a tradeoff in increased sheet resistance. In the optimum case, the nanostructured ITO electrodes enhance the transmittance by ∼7% (relative) compared to planar references. Perovskite/c-Si tandem devices with nanostructured ITO exhibit enhanced short-circuit current density (2.9 mA/cm2 absolute) and PCE (1.7% absolute) in the bottom c-Si solar cell compared to the reference. The improved light in-coupling is more pronounced for elevated angle of incidence. Energy yield enhancement up to ∼10% (relative) is achieved for perovskite/c-Si tandem architecture with the nanostructured ITO electrodes. It is also shown that these nanostructured ITO electrodes are also compatible with various other perovskite-based tandem architectures and bear the potential to improve the PCE up to 27.0%. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Optics Express, Vol. 28, No. 6, 16.03.2020, p. 8878-8897.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Nanostructured front electrodes for perovskite/c-Si tandem photovoltaics
AU - Hossain, Ihteaz M.
AU - Donie, Yidenekachew J.
AU - Schmager, Raphael
AU - Abdelkhalik, Mohamed S.
AU - Rienäcker, Michael
AU - Wietler, Tobias F.
AU - Peibst, Robby
AU - Karabanov, Andrei
AU - Schwenzer, Jonas A.
AU - Moghadamzadeh, Somayeh
AU - Lemmer, Ulrich
AU - Richards, Bryce S.
AU - Gomard, Guillaume
AU - Paetzold, Ulrich W.
N1 - Funding information: Helmholtz Association (HYIG of Dr. U.W. Paetzold [VH-NG-1148]; Recruitment Initiative of Prof. B.S. Richards; HEMF, PEROSEED [ZT-0024] Innovationpool, Science and Technology of Nanosystems); KIT Young Investigator Network; Bundesministerium für Bildung und Forschung (PRINTPERO [03SF0557A]); Deutsche Forschungsgemeinschaft (LAMBDA); Bundesministerium für Wirtschaft und Technologie (“EASi” (FKZ0324040)); German State of Lower Saxony. The authors express their gratitude towards the great spirit of the “KIT perovskite PV taskforce”, especially Isabel Allegro, Diana Rueda-Delgado, Adrian Mertens, Tobias Abzieher, Bahram Abdollahi Nejand and Saba Gharibzadeh. We also acknowledge Patrice Brenner for the focused ion beam cut of the perovskite solar cells. The authors wish to thank H. Kohlenberg and the team from ISFH and from Institute of Electronic Materials and Devices (MBE) at Leibniz Universität Hannover for the Si bottom cell fabrication. The authors gratefully acknowledge the help and support of the Karlsruhe School of Optics & Photonics (KSOP) and Max Planck School of Photonics (MPSP), respectively.
PY - 2020/3/16
Y1 - 2020/3/16
N2 - The rise in the power conversion efficiency (PCE) of perovskite solar cells has triggered enormous interest in perovskite-based tandem photovoltaics. One key challenge is to achieve high transmission of low energy photons into the bottom cell. Here, nanostructured front electrodes for 4-terminal perovskite/crystalline-silicon (perovskite/c-Si) tandem solar cells are developed by conformal deposition of indium tin oxide (ITO) on self-assembled polystyrene nanopillars. The nanostructured ITO is optimized for reduced reflection and increased transmission with a tradeoff in increased sheet resistance. In the optimum case, the nanostructured ITO electrodes enhance the transmittance by ∼7% (relative) compared to planar references. Perovskite/c-Si tandem devices with nanostructured ITO exhibit enhanced short-circuit current density (2.9 mA/cm2 absolute) and PCE (1.7% absolute) in the bottom c-Si solar cell compared to the reference. The improved light in-coupling is more pronounced for elevated angle of incidence. Energy yield enhancement up to ∼10% (relative) is achieved for perovskite/c-Si tandem architecture with the nanostructured ITO electrodes. It is also shown that these nanostructured ITO electrodes are also compatible with various other perovskite-based tandem architectures and bear the potential to improve the PCE up to 27.0%. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
AB - The rise in the power conversion efficiency (PCE) of perovskite solar cells has triggered enormous interest in perovskite-based tandem photovoltaics. One key challenge is to achieve high transmission of low energy photons into the bottom cell. Here, nanostructured front electrodes for 4-terminal perovskite/crystalline-silicon (perovskite/c-Si) tandem solar cells are developed by conformal deposition of indium tin oxide (ITO) on self-assembled polystyrene nanopillars. The nanostructured ITO is optimized for reduced reflection and increased transmission with a tradeoff in increased sheet resistance. In the optimum case, the nanostructured ITO electrodes enhance the transmittance by ∼7% (relative) compared to planar references. Perovskite/c-Si tandem devices with nanostructured ITO exhibit enhanced short-circuit current density (2.9 mA/cm2 absolute) and PCE (1.7% absolute) in the bottom c-Si solar cell compared to the reference. The improved light in-coupling is more pronounced for elevated angle of incidence. Energy yield enhancement up to ∼10% (relative) is achieved for perovskite/c-Si tandem architecture with the nanostructured ITO electrodes. It is also shown that these nanostructured ITO electrodes are also compatible with various other perovskite-based tandem architectures and bear the potential to improve the PCE up to 27.0%. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
UR - http://www.scopus.com/inward/record.url?scp=85081413273&partnerID=8YFLogxK
U2 - 10.1364/OE.382253
DO - 10.1364/OE.382253
M3 - Article
C2 - 32225505
AN - SCOPUS:85081413273
VL - 28
SP - 8878
EP - 8897
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 6
ER -