Minimizing Current and Voltage Losses to Reach 25% Efficient Monolithic Two-Terminal Perovskite-Silicon Tandem Solar Cells

Kevin A. Bush, Salman Manzoor, Kyle Frohna, Zhengshan Yu, James A. Raiford, Axel F. Palmstrom, Hsin Ping Wang, Rohit Prasanna, Stacey F. Bent, Zachary Holman, Michael D. McGehee

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The rapid rise in efficiency and tunable bandgap of metal-halide perovskites makes them highly attractive for use in tandems on silicon. Recently we demonstrated a perovskite-silicon monolithic two-terminal tandem with 23.6% power conversion efficiency. Here, we present work on optical optimization to improve light harvesting that includes thinning out the top transparent electrode to reduce front-surface reflection and parasitic absorption; introducing metal fingers to minimize series resistance losses; and further minimizing reflection loss with a polydimethylsiloxane (PDMS) stamp with random, pyramidal texture. Additionally, to reduce voltage loss while achieving current matching, we employ poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) as a hole transport material instead of NiOx and a wider 1.68 eV bandgap perovskite composition. These optimizations boost the open-circuit voltage to 1.77 V and the short-circuit current density to 18.4 mA/cm2, culminating in a 25% efficient perovskite-silicon tandem with a 1 cm2 active area.

Original languageEnglish (US)
Pages (from-to)2173-2180
Number of pages8
JournalACS Energy Letters
Volume3
Issue number9
DOIs
StatePublished - Sep 14 2018

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Silicon
Perovskite
Solar cells
Electric potential
Energy gap
Metal halides
Open circuit voltage
Polydimethylsiloxane
Short circuit currents
Conversion efficiency
Amines
Current density
Textures
Metals
Electrodes
Chemical analysis
perovskite

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Materials Chemistry

Cite this

Minimizing Current and Voltage Losses to Reach 25% Efficient Monolithic Two-Terminal Perovskite-Silicon Tandem Solar Cells. / Bush, Kevin A.; Manzoor, Salman; Frohna, Kyle; Yu, Zhengshan; Raiford, James A.; Palmstrom, Axel F.; Wang, Hsin Ping; Prasanna, Rohit; Bent, Stacey F.; Holman, Zachary; McGehee, Michael D.

In: ACS Energy Letters, Vol. 3, No. 9, 14.09.2018, p. 2173-2180.

Research output: Contribution to journalArticle

Bush, KA, Manzoor, S, Frohna, K, Yu, Z, Raiford, JA, Palmstrom, AF, Wang, HP, Prasanna, R, Bent, SF, Holman, Z & McGehee, MD 2018, 'Minimizing Current and Voltage Losses to Reach 25% Efficient Monolithic Two-Terminal Perovskite-Silicon Tandem Solar Cells', ACS Energy Letters, vol. 3, no. 9, pp. 2173-2180. https://doi.org/10.1021/acsenergylett.8b01201
Bush, Kevin A. ; Manzoor, Salman ; Frohna, Kyle ; Yu, Zhengshan ; Raiford, James A. ; Palmstrom, Axel F. ; Wang, Hsin Ping ; Prasanna, Rohit ; Bent, Stacey F. ; Holman, Zachary ; McGehee, Michael D. / Minimizing Current and Voltage Losses to Reach 25% Efficient Monolithic Two-Terminal Perovskite-Silicon Tandem Solar Cells. In: ACS Energy Letters. 2018 ; Vol. 3, No. 9. pp. 2173-2180.
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