Hybrid organic nanocrystal/carbon nanotube film electrodes for air- and photo-stable perovskite photovoltaics

Raja Bhaskar Kanth Siram, Mark V. Khenkin, Angelica Niazov-Elkan, K. M. Anoop, Haim Weissman, Eugene A. Katz, Iris Visoly-Fisher, Boris Rybtchinski

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We report on utilizing free-standing hybrid perylenediimide/carbon nanotube (PDI/CNT) films fabricated in air as back contacts for fully inorganic perovskite solar cells (glass/FTO/dense TiO 2 /mesoporous TiO 2 /CsPbBr 3 /back electrode). The back contact electrode connection is performed by film transfer rather than by vacuum deposition or by wet processing, allowing the formation of highly homogeneous contacts under ambient conditions. The use of this novel electrode in solar cells based on CsPbBr 3 resulted in efficiency of 5.8% without a hole transporting layer; it is significantly improved in comparison to the reference cells with standard gold electrodes. Overall device fabrication can be performed on air, using inexpensive processing methods. The hybrid film electrodes dramatically improve the cell photo-stability under ambient conditions and under real-life operating conditions outdoors. The champion unencapsulated device demonstrated less than 30% efficiency loss over 6 weeks of outdoor aging in Negev desert conditions. The CNT/PDI electrodes offer the combination of fabrication simplicity, unique contacting approach, high efficiency and good operational stability for perovskite photovoltaics.

Original languageEnglish
Pages (from-to)3733-3740
Number of pages8
JournalNanoscale
Volume11
Issue number8
DOIs
Publication statusPublished - Feb 28 2019

Fingerprint

Carbon Nanotubes
Perovskite
Nanocrystals
Carbon nanotubes
Electrodes
Air
Fabrication
Vacuum deposition
Processing
Gold
Contacts (fluid mechanics)
perovskite
Solar cells
Aging of materials
Glass

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Siram, R. B. K., Khenkin, M. V., Niazov-Elkan, A., Anoop, K. M., Weissman, H., Katz, E. A., ... Rybtchinski, B. (2019). Hybrid organic nanocrystal/carbon nanotube film electrodes for air- and photo-stable perovskite photovoltaics. Nanoscale, 11(8), 3733-3740. https://doi.org/10.1039/c8nr09353a

Hybrid organic nanocrystal/carbon nanotube film electrodes for air- and photo-stable perovskite photovoltaics. / Siram, Raja Bhaskar Kanth; Khenkin, Mark V.; Niazov-Elkan, Angelica; Anoop, K. M.; Weissman, Haim; Katz, Eugene A.; Visoly-Fisher, Iris; Rybtchinski, Boris.

In: Nanoscale, Vol. 11, No. 8, 28.02.2019, p. 3733-3740.

Research output: Contribution to journalArticle

Siram, RBK, Khenkin, MV, Niazov-Elkan, A, Anoop, KM, Weissman, H, Katz, EA, Visoly-Fisher, I & Rybtchinski, B 2019, 'Hybrid organic nanocrystal/carbon nanotube film electrodes for air- and photo-stable perovskite photovoltaics', Nanoscale, vol. 11, no. 8, pp. 3733-3740. https://doi.org/10.1039/c8nr09353a
Siram RBK, Khenkin MV, Niazov-Elkan A, Anoop KM, Weissman H, Katz EA et al. Hybrid organic nanocrystal/carbon nanotube film electrodes for air- and photo-stable perovskite photovoltaics. Nanoscale. 2019 Feb 28;11(8):3733-3740. https://doi.org/10.1039/c8nr09353a
Siram, Raja Bhaskar Kanth ; Khenkin, Mark V. ; Niazov-Elkan, Angelica ; Anoop, K. M. ; Weissman, Haim ; Katz, Eugene A. ; Visoly-Fisher, Iris ; Rybtchinski, Boris. / Hybrid organic nanocrystal/carbon nanotube film electrodes for air- and photo-stable perovskite photovoltaics. In: Nanoscale. 2019 ; Vol. 11, No. 8. pp. 3733-3740.
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