Why lead methylammonium tri-iodide perovskite-based solar cells require a mesoporous electron transporting scaffold (but not necessarily a hole conductor)

Eran Edri; Saar Kirmayer; Alex Henning; Sabyasachi Mukhopadhyay; Konstantin Gartsman; Yossi Rosenwaks; Gary Hodes; David Cahen

doi:10.1021/nl404454h

Why lead methylammonium tri-iodide perovskite-based solar cells require a mesoporous electron transporting scaffold (but not necessarily a hole conductor)

Eran Edri, Saar Kirmayer, Alex Henning, Sabyasachi Mukhopadhyay, Konstantin Gartsman, Yossi Rosenwaks, Gary Hodes, David Cahen

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

533 Scopus citations

Abstract

CH₃NH₃PbI₃-based solar cells were characterized with electron beam-induced current (EBIC) and compared to CH ₃NH₃PbI_3-xCl_x ones. A spatial map of charge separation efficiency in working cells shows p-i-n structures for both thin film cells. Effective diffusion lengths, L_D, (from EBIC profile) show that holes are extracted significantly more efficiently than electrons in CH₃NH₃PbI₃, explaining why CH ₃NH₃PbI₃-based cells require mesoporous electron conductors, while CH₃NH₃PbI_3-xCl _x ones, where L_D values are comparable for both charge types, do not.

Original language	English
Pages (from-to)	1000-1004
Number of pages	5
Journal	Nano Letters
Volume	14
Issue number	2
DOIs	https://doi.org/10.1021/nl404454h
State	Published - 12 Feb 2014
Externally published	Yes

Keywords

Perovskite solar cell
electron beam induced current
organic-inorganic lead halide
photovoltaic
scanning kelvin probe force microscopy

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

UN SDGs

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

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10.1021/nl404454h

Cite this

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abstract = "CH3NH3PbI3-based solar cells were characterized with electron beam-induced current (EBIC) and compared to CH 3NH3PbI3-xClx ones. A spatial map of charge separation efficiency in working cells shows p-i-n structures for both thin film cells. Effective diffusion lengths, LD, (from EBIC profile) show that holes are extracted significantly more efficiently than electrons in CH3NH3PbI3, explaining why CH 3NH3PbI3-based cells require mesoporous electron conductors, while CH3NH3PbI3-xCl x ones, where LD values are comparable for both charge types, do not.",

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AU - Edri, Eran

AU - Kirmayer, Saar

AU - Henning, Alex

AU - Mukhopadhyay, Sabyasachi

AU - Gartsman, Konstantin

AU - Rosenwaks, Yossi

AU - Hodes, Gary

AU - Cahen, David

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Y1 - 2014/2/12

N2 - CH3NH3PbI3-based solar cells were characterized with electron beam-induced current (EBIC) and compared to CH 3NH3PbI3-xClx ones. A spatial map of charge separation efficiency in working cells shows p-i-n structures for both thin film cells. Effective diffusion lengths, LD, (from EBIC profile) show that holes are extracted significantly more efficiently than electrons in CH3NH3PbI3, explaining why CH 3NH3PbI3-based cells require mesoporous electron conductors, while CH3NH3PbI3-xCl x ones, where LD values are comparable for both charge types, do not.

AB - CH3NH3PbI3-based solar cells were characterized with electron beam-induced current (EBIC) and compared to CH 3NH3PbI3-xClx ones. A spatial map of charge separation efficiency in working cells shows p-i-n structures for both thin film cells. Effective diffusion lengths, LD, (from EBIC profile) show that holes are extracted significantly more efficiently than electrons in CH3NH3PbI3, explaining why CH 3NH3PbI3-based cells require mesoporous electron conductors, while CH3NH3PbI3-xCl x ones, where LD values are comparable for both charge types, do not.

KW - Perovskite solar cell

KW - electron beam induced current

KW - organic-inorganic lead halide

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KW - scanning kelvin probe force microscopy

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Why lead methylammonium tri-iodide perovskite-based solar cells require a mesoporous electron transporting scaffold (but not necessarily a hole conductor)

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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