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^*

^*Corresponding author for this work

School of Electrical Engineering

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

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

Keywords

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

UN SDGs

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

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10.1021/nl404454h

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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

PY - 2014/2/12

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.

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KW - electron beam induced current

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KW - photovoltaic

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

UN SDGs

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