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

doi:10.1039/c8nr09353a

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

The Swiss Institute for Dryland Environmental and Energy Research

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

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 language	English
Pages (from-to)	3733-3740
Number of pages	8
Journal	Nanoscale
Volume	11
Issue number	8
DOIs	https://doi.org/10.1039/c8nr09353a
State	Published - 28 Feb 2019

ASJC Scopus subject areas

Materials Science (all)

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10.1039/c8nr09353a

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@article{584a8a3bb94d4ef0afa1655197780d34,

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

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.",

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

note = "Funding Information: The research was funded by Dana and Yossie Hollander (Israel), Israel Ministry of National Infrastructures, Water and Energy Resources (grant no. 0399202/215-11-037), and by the Adelis Foundation. I. V. F. and E. A. K. acknowledge partial support from the Israel Science Foundation-NSFC joint program (Grant number 0752/15). E. A. K. and M. V. K. thank the United States – Israel Binational Science Foundation (grant no. 2015757). A. K. M. is grateful to the Albert Katz Graduate School (BGU) for PhD fellowship, and R. B. K. S. to the Planning and Budgeting Committee (PBC), Israel, for postdoctoral fellowship. A. N.-E. is a recipient of the Adams Fellowship for PhD studies. We thank Prof. David Cahen and Prof. Gary Hodes for allowing us to use the device fabrication facilities and for the valuable discussions. Publisher Copyright: {\textcopyright} 2019 The Royal Society of Chemistry.",

year = "2019",

month = feb,

day = "28",

doi = "10.1039/c8nr09353a",

language = "English",

volume = "11",

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journal = "Nanoscale",

issn = "2040-3364",

publisher = "Royal Society of Chemistry",

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T1 - Hybrid organic nanocrystal/carbon nanotube film electrodes for air- and photo-stable perovskite photovoltaics

AU - Siram, Raja Bhaskar Kanth

AU - Khenkin, Mark V.

AU - Niazov-Elkan, Angelica

AU - Anoop, K. M.

AU - Weissman, Haim

AU - Katz, Eugene A.

AU - Visoly-Fisher, Iris

AU - Rybtchinski, Boris

N1 - Funding Information: The research was funded by Dana and Yossie Hollander (Israel), Israel Ministry of National Infrastructures, Water and Energy Resources (grant no. 0399202/215-11-037), and by the Adelis Foundation. I. V. F. and E. A. K. acknowledge partial support from the Israel Science Foundation-NSFC joint program (Grant number 0752/15). E. A. K. and M. V. K. thank the United States – Israel Binational Science Foundation (grant no. 2015757). A. K. M. is grateful to the Albert Katz Graduate School (BGU) for PhD fellowship, and R. B. K. S. to the Planning and Budgeting Committee (PBC), Israel, for postdoctoral fellowship. A. N.-E. is a recipient of the Adams Fellowship for PhD studies. We thank Prof. David Cahen and Prof. Gary Hodes for allowing us to use the device fabrication facilities and for the valuable discussions. Publisher Copyright: © 2019 The Royal Society of Chemistry.

PY - 2019/2/28

Y1 - 2019/2/28

N2 - 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.

AB - 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.

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U2 - 10.1039/c8nr09353a

DO - 10.1039/c8nr09353a

M3 - Article

C2 - 30742182

AN - SCOPUS:85061986792

VL - 11

SP - 3733

EP - 3740

JO - Nanoscale

JF - Nanoscale

SN - 2040-3364

IS - 8

ER -

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

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