Grain Engineering for Perovskite/Silicon Monolithic Tandem Solar Cells with Efficiency of 25.4%

Bo Chen, Zhengshan Yu, Kong Liu, Xiaopeng Zheng, Ye Liu, Jianwei Shi, Derrek Spronk, Peter N. Rudd, Zachary Holman, Jinsong Huang

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Organic-inorganic halide perovskites are promising semiconductors to mate with silicon in tandem photovoltaic cells due to their solution processability and tunable complementary bandgaps. Herein, we show that a combination of two additives, MACl and MAH2PO2, in the perovskite precursor can significantly improve the grain morphology of wide-bandgap (1.64–1.70 eV) perovskite films, resulting in solar cells with increased photocurrent while reducing the open-circuit voltage deficit to 0.49–0.51 V. The addition of MACl enlarges the grain size, while MAH2PO2 reduces non-radiative recombination through passivation of the perovskite grain boundaries, with good synergy of functions from MACl and MAH2PO2. Matching the photocurrent between the two sub-cells in a perovskite/silicon monolithic tandem solar cell by using a bandgap of 1.64 eV for the top cell results in a high tandem Voc of 1.80 V and improved power conversion efficiency of 25.4%.

Original languageEnglish (US)
Pages (from-to)177-190
Number of pages14
JournalJoule
Volume3
Issue number1
DOIs
StatePublished - Jan 16 2019

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Perovskite
Solar cells
Silicon
Energy gap
Photocurrents
Photovoltaic cells
Open circuit voltage
Passivation
Conversion efficiency
Grain boundaries
Semiconductor materials

Keywords

  • additive
  • grain engineering
  • perovskite
  • solar cell
  • tandem
  • wide bandgap

ASJC Scopus subject areas

  • Energy(all)

Cite this

Grain Engineering for Perovskite/Silicon Monolithic Tandem Solar Cells with Efficiency of 25.4%. / Chen, Bo; Yu, Zhengshan; Liu, Kong; Zheng, Xiaopeng; Liu, Ye; Shi, Jianwei; Spronk, Derrek; Rudd, Peter N.; Holman, Zachary; Huang, Jinsong.

In: Joule, Vol. 3, No. 1, 16.01.2019, p. 177-190.

Research output: Contribution to journalArticle

Chen, B, Yu, Z, Liu, K, Zheng, X, Liu, Y, Shi, J, Spronk, D, Rudd, PN, Holman, Z & Huang, J 2019, 'Grain Engineering for Perovskite/Silicon Monolithic Tandem Solar Cells with Efficiency of 25.4%', Joule, vol. 3, no. 1, pp. 177-190. https://doi.org/10.1016/j.joule.2018.10.003
Chen, Bo ; Yu, Zhengshan ; Liu, Kong ; Zheng, Xiaopeng ; Liu, Ye ; Shi, Jianwei ; Spronk, Derrek ; Rudd, Peter N. ; Holman, Zachary ; Huang, Jinsong. / Grain Engineering for Perovskite/Silicon Monolithic Tandem Solar Cells with Efficiency of 25.4%. In: Joule. 2019 ; Vol. 3, No. 1. pp. 177-190.
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