Highly stable and efficient all-inorganic lead-free perovskite solar cells with native-oxide passivation

Min Chen, Ming Gang Ju, Hector F. Garces, Alexander D. Carl, Luis K. Ono, Zafer Hawash, Yi Zhang, Tianyi Shen, Yabing Qi, Ronald L. Grimm, Domenico Pacifici, Xiao C Zeng, Yuanyuan Zhou, Nitin P. Padture

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

There has been an urgent need to eliminate toxic lead from the prevailing halide perovskite solar cells (PSCs), but the current lead-free PSCs are still plagued with the critical issues of low efficiency and poor stability. This is primarily due to their inadequate photovoltaic properties and chemical stability. Herein we demonstrate the use of the lead-free, all-inorganic cesium tin-germanium triiodide (CsSn 0.5 Ge 0.5 I 3 ) solid-solution perovskite as the light absorber in PSCs, delivering promising efficiency of up to 7.11%. More importantly, these PSCs show very high stability, with less than 10% decay in efficiency after 500 h of continuous operation in N 2  atmosphere under one-sun illumination. The key to this striking performance of these PSCs is the formation of a full-coverage, stable native-oxide layer, which fully encapsulates and passivates the perovskite surfaces. The native-oxide passivation approach reported here represents an alternate avenue for boosting the efficiency and stability of lead-free PSCs.

Original languageEnglish (US)
Article number16
JournalNature communications
Volume10
Issue number1
DOIs
StatePublished - Dec 1 2019

Fingerprint

Passivation
Oxides
passivity
solar cells
oxides
Germanium
Poisons
Chemical stability
Sun
halides
Perovskite solar cells
Lead
perovskite
Solid solutions
germanium
absorbers
sun
Solar System
solid solutions
Lighting

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Chen, M., Ju, M. G., Garces, H. F., Carl, A. D., Ono, L. K., Hawash, Z., ... Padture, N. P. (2019). Highly stable and efficient all-inorganic lead-free perovskite solar cells with native-oxide passivation. Nature communications, 10(1), [16]. https://doi.org/10.1038/s41467-018-07951-y

Highly stable and efficient all-inorganic lead-free perovskite solar cells with native-oxide passivation. / Chen, Min; Ju, Ming Gang; Garces, Hector F.; Carl, Alexander D.; Ono, Luis K.; Hawash, Zafer; Zhang, Yi; Shen, Tianyi; Qi, Yabing; Grimm, Ronald L.; Pacifici, Domenico; Zeng, Xiao C; Zhou, Yuanyuan; Padture, Nitin P.

In: Nature communications, Vol. 10, No. 1, 16, 01.12.2019.

Research output: Contribution to journalArticle

Chen, M, Ju, MG, Garces, HF, Carl, AD, Ono, LK, Hawash, Z, Zhang, Y, Shen, T, Qi, Y, Grimm, RL, Pacifici, D, Zeng, XC, Zhou, Y & Padture, NP 2019, 'Highly stable and efficient all-inorganic lead-free perovskite solar cells with native-oxide passivation', Nature communications, vol. 10, no. 1, 16. https://doi.org/10.1038/s41467-018-07951-y
Chen, Min ; Ju, Ming Gang ; Garces, Hector F. ; Carl, Alexander D. ; Ono, Luis K. ; Hawash, Zafer ; Zhang, Yi ; Shen, Tianyi ; Qi, Yabing ; Grimm, Ronald L. ; Pacifici, Domenico ; Zeng, Xiao C ; Zhou, Yuanyuan ; Padture, Nitin P. / Highly stable and efficient all-inorganic lead-free perovskite solar cells with native-oxide passivation. In: Nature communications. 2019 ; Vol. 10, No. 1.
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