Chloride inclusion and hole transport material doping to improve methyl ammonium lead bromide perovskite-based high open-circuit voltage solar cells

Eran Edri; Saar Kirmayer; Michael Kulbak; Gary Hodes; David Cahen

doi:10.1021/jz402706q

Chloride inclusion and hole transport material doping to improve methyl ammonium lead bromide perovskite-based high open-circuit voltage solar cells

Eran Edri, Saar Kirmayer, Michael Kulbak, Gary Hodes, David Cahen

Department of Molecular Chemistry and Materials Science Perlman

Weizmann Institute of Science

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

Abstract

Low-cost solar cells with high V_OC, relatively small (E _G - qV_OC), and high qV_OC/E_G ratio, where E_G is the absorber band gap, are long sought after, especially for use in tandem cells or other systems with spectral splitting. We report a significant improvement in CH₃NH₃PbBr₃-based cells, using CH₃NH₃PbBr_3-xCl_x, with E_G = 2.3 eV, as the absorber in a mesoporous p-i-n device configuration. By p-doping an organic hole transport material with a deep HOMO level and wide band gap to reduce recombination, the cell's V_OC increased to 1.5 V, a 0.2 V increase from our earlier results with the pristine Br analogue with an identical band gap. At the same time, in the most efficient devices, the current density increased from ∼1 to ∼4 mA/cm².

Original language	American English
Pages (from-to)	429-433
Number of pages	5
Journal	Journal of Physical Chemistry Letters
Volume	5
Issue number	3
DOIs	https://doi.org/10.1021/jz402706q
State	Published - 6 Feb 2014

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

high open-circuit voltage
organic-inorganic lead halide perovskite
solar cell

All Science Journal Classification (ASJC) codes

General Materials Science
Physical and Theoretical Chemistry

Access to Document

10.1021/jz402706q

Cite this

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title = "Chloride inclusion and hole transport material doping to improve methyl ammonium lead bromide perovskite-based high open-circuit voltage solar cells",

abstract = "Low-cost solar cells with high VOC, relatively small (E G - qVOC), and high qVOC/EG ratio, where EG is the absorber band gap, are long sought after, especially for use in tandem cells or other systems with spectral splitting. We report a significant improvement in CH3NH3PbBr3-based cells, using CH3NH3PbBr3-xClx, with EG = 2.3 eV, as the absorber in a mesoporous p-i-n device configuration. By p-doping an organic hole transport material with a deep HOMO level and wide band gap to reduce recombination, the cell's VOC increased to 1.5 V, a 0.2 V increase from our earlier results with the pristine Br analogue with an identical band gap. At the same time, in the most efficient devices, the current density increased from ∼1 to ∼4 mA/cm2.",

keywords = "high open-circuit voltage, organic-inorganic lead halide perovskite, solar cell",

author = "Eran Edri and Saar Kirmayer and Michael Kulbak and Gary Hodes and David Cahen",

note = "Leona M. and Harry B. Helmsley Charitable Trust; Kamin program of the Israel Ministry of Trade and Industry; Israel National Nano-Initiative; Nancy and Stephen Grand Center for Sensors and SecurityWe thank the Leona M. and Harry B. Helmsley Charitable Trust, the Kamin program of the Israel Ministry of Trade and Industry, the Israel National Nano-Initiative, Mr. Martin Kushner Schnur, and the Nancy and Stephen Grand Center for Sensors and Security for partial support. D.C. holds the Sylvia and Rowland Schaefer Chair in Energy research.",

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doi = "10.1021/jz402706q",

language = "American English",

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pages = "429--433",

journal = "Journal of Physical Chemistry Letters",

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AU - Edri, Eran

AU - Kirmayer, Saar

AU - Kulbak, Michael

AU - Hodes, Gary

AU - Cahen, David

N1 - Leona M. and Harry B. Helmsley Charitable Trust; Kamin program of the Israel Ministry of Trade and Industry; Israel National Nano-Initiative; Nancy and Stephen Grand Center for Sensors and SecurityWe thank the Leona M. and Harry B. Helmsley Charitable Trust, the Kamin program of the Israel Ministry of Trade and Industry, the Israel National Nano-Initiative, Mr. Martin Kushner Schnur, and the Nancy and Stephen Grand Center for Sensors and Security for partial support. D.C. holds the Sylvia and Rowland Schaefer Chair in Energy research.

PY - 2014/2/6

Y1 - 2014/2/6

N2 - Low-cost solar cells with high VOC, relatively small (E G - qVOC), and high qVOC/EG ratio, where EG is the absorber band gap, are long sought after, especially for use in tandem cells or other systems with spectral splitting. We report a significant improvement in CH3NH3PbBr3-based cells, using CH3NH3PbBr3-xClx, with EG = 2.3 eV, as the absorber in a mesoporous p-i-n device configuration. By p-doping an organic hole transport material with a deep HOMO level and wide band gap to reduce recombination, the cell's VOC increased to 1.5 V, a 0.2 V increase from our earlier results with the pristine Br analogue with an identical band gap. At the same time, in the most efficient devices, the current density increased from ∼1 to ∼4 mA/cm2.

AB - Low-cost solar cells with high VOC, relatively small (E G - qVOC), and high qVOC/EG ratio, where EG is the absorber band gap, are long sought after, especially for use in tandem cells or other systems with spectral splitting. We report a significant improvement in CH3NH3PbBr3-based cells, using CH3NH3PbBr3-xClx, with EG = 2.3 eV, as the absorber in a mesoporous p-i-n device configuration. By p-doping an organic hole transport material with a deep HOMO level and wide band gap to reduce recombination, the cell's VOC increased to 1.5 V, a 0.2 V increase from our earlier results with the pristine Br analogue with an identical band gap. At the same time, in the most efficient devices, the current density increased from ∼1 to ∼4 mA/cm2.

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KW - organic-inorganic lead halide perovskite

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Chloride inclusion and hole transport material doping to improve methyl ammonium lead bromide perovskite-based high open-circuit voltage solar cells

Abstract

UN SDGs

Keywords

All Science Journal Classification (ASJC) codes

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