High-work-function molybdenum oxide hole extraction contacts in hybrid organic-inorganic perovskite solar cells

Philip Schulz; Jan O. Tiepelt; Jeffrey A. Christians; Igal Levine; Eran Edri; Erin M. Sanehira; Gary Hodes; David Cahen; Antoine Kahn

doi:10.1021/acsami.6b10898

High-work-function molybdenum oxide hole extraction contacts in hybrid organic-inorganic perovskite solar cells

Philip Schulz
, Jan O. Tiepelt
, Jeffrey A. Christians
, Igal Levine
, Eran Edri
, Erin M. Sanehira
, Gary Hodes
, David Cahen
, Antoine Kahn

Princeton University
National Renewable Energy Laboratory
Dept. of Materials and Interfaces
Weizmann Institute of Science Israel
Ernest Orlando Lawrence Berkeley National Laboratory
University of Washington

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

186 Citations (Scopus)

Résumé

We investigate the effect of high work function contacts in halide perovskite absorber-based photovoltaic devices. Photoemission spectroscopy measurements reveal that band bending is induced in the absorber by the deposition of the high work function molybdenum trioxide (MoO₃). We find that direct contact between MoO₃ and the perovskite leads to a chemical reaction, which diminishes device functionality. Introducing an ultrathin spiro-MeOTAD buffer layer prevents the reaction, yet the altered evolution of the energy levels in the methylammonium lead iodide (MAPbI₃) layer at the interface still negatively impacts device performance.

langue originale	Anglais
Pages (de - à)	31491-31499
Nombre de pages	9
journal	ACS Applied Materials and Interfaces
Volume	8
Numéro de publication	46
Les DOIs	https://doi.org/10.1021/acsami.6b10898
état	Publié - 23 nov. 2016
Modification externe	Oui

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10.1021/acsami.6b10898

Contient cette citation

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title = "High-work-function molybdenum oxide hole extraction contacts in hybrid organic-inorganic perovskite solar cells",

abstract = "We investigate the effect of high work function contacts in halide perovskite absorber-based photovoltaic devices. Photoemission spectroscopy measurements reveal that band bending is induced in the absorber by the deposition of the high work function molybdenum trioxide (MoO3). We find that direct contact between MoO3 and the perovskite leads to a chemical reaction, which diminishes device functionality. Introducing an ultrathin spiro-MeOTAD buffer layer prevents the reaction, yet the altered evolution of the energy levels in the methylammonium lead iodide (MAPbI3) layer at the interface still negatively impacts device performance.",

keywords = "band offsets, charge carrier transport, electronic structures/processes/mechanisms, hybrid materials, photoemission spectroscopy, photovoltaic devices",

author = "Philip Schulz and Tiepelt, \{Jan O.\} and Christians, \{Jeffrey A.\} and Igal Levine and Eran Edri and Sanehira, \{Erin M.\} and Gary Hodes and David Cahen and Antoine Kahn",

note = "Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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doi = "10.1021/acsami.6b10898",

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AU - Schulz, Philip

AU - Tiepelt, Jan O.

AU - Christians, Jeffrey A.

AU - Levine, Igal

AU - Edri, Eran

AU - Sanehira, Erin M.

AU - Hodes, Gary

AU - Cahen, David

AU - Kahn, Antoine

PY - 2016/11/23

Y1 - 2016/11/23

N2 - We investigate the effect of high work function contacts in halide perovskite absorber-based photovoltaic devices. Photoemission spectroscopy measurements reveal that band bending is induced in the absorber by the deposition of the high work function molybdenum trioxide (MoO3). We find that direct contact between MoO3 and the perovskite leads to a chemical reaction, which diminishes device functionality. Introducing an ultrathin spiro-MeOTAD buffer layer prevents the reaction, yet the altered evolution of the energy levels in the methylammonium lead iodide (MAPbI3) layer at the interface still negatively impacts device performance.

AB - We investigate the effect of high work function contacts in halide perovskite absorber-based photovoltaic devices. Photoemission spectroscopy measurements reveal that band bending is induced in the absorber by the deposition of the high work function molybdenum trioxide (MoO3). We find that direct contact between MoO3 and the perovskite leads to a chemical reaction, which diminishes device functionality. Introducing an ultrathin spiro-MeOTAD buffer layer prevents the reaction, yet the altered evolution of the energy levels in the methylammonium lead iodide (MAPbI3) layer at the interface still negatively impacts device performance.

KW - band offsets

KW - charge carrier transport

KW - electronic structures/processes/mechanisms

KW - hybrid materials

KW - photoemission spectroscopy

KW - photovoltaic devices

U2 - 10.1021/acsami.6b10898

DO - 10.1021/acsami.6b10898

M3 - Article

AN - SCOPUS:84999208582

SN - 1944-8244

VL - 8

SP - 31491

EP - 31499

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 46

ER -

High-work-function molybdenum oxide hole extraction contacts in hybrid organic-inorganic perovskite solar cells

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