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

Abstract

Here, 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.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [4];  [4];  [2]
+ Show Author Affiliations
  1. Princeton Univ., Princeton, NJ (United States); National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Princeton Univ., Princeton, NJ (United States)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  4. Weizmann Institute of Science, Rehovot (Israel)
  5. Weizmann Institute of Science, Rehovot (Israel); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  6. National Renewable Energy Lab. (NREL), Golden, CO (United States); Univ. of Washington, Seattle, WA (United States)
Publication Date:
Research Org.:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
OSTI Identifier:
1337615
Report Number(s):
NREL/JA-5K00-67634
Journal ID: ISSN 1944-8244
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 8; Journal Issue: 46; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; band offsets; charge carrier transport; electronic structures/processes/mechanisms; hybrid materials; photoemission spectroscopy; photovoltaic devices

Citation Formats

Schulz, Philip, Tiepelt, Jan O., Christians, Jeffrey A., Levine, Igal, Edri, Eran, Sanehira, Erin M., Hodes, Gary, Cahen, David, and Kahn, Antoine. High-work-function molybdenum oxide hole extraction contacts in hybrid organic–inorganic perovskite solar cells. United States: N. p., 2016. Web. doi:10.1021/acsami.6b10898.
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Schulz, Philip, Tiepelt, Jan O., Christians, Jeffrey A., Levine, Igal, Edri, Eran, Sanehira, Erin M., Hodes, Gary, Cahen, David, & Kahn, Antoine. High-work-function molybdenum oxide hole extraction contacts in hybrid organic–inorganic perovskite solar cells. United States. https://doi.org/10.1021/acsami.6b10898
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Schulz, Philip, Tiepelt, Jan O., Christians, Jeffrey A., Levine, Igal, Edri, Eran, Sanehira, Erin M., Hodes, Gary, Cahen, David, and Kahn, Antoine. Tue . "High-work-function molybdenum oxide hole extraction contacts in hybrid organic–inorganic perovskite solar cells". United States. https://doi.org/10.1021/acsami.6b10898. https://www.osti.gov/servlets/purl/1337615.
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@article{osti_1337615,
title = {High-work-function molybdenum oxide hole extraction contacts in hybrid organic–inorganic perovskite solar cells},
author = {Schulz, Philip and Tiepelt, Jan O. and Christians, Jeffrey A. and Levine, Igal and Edri, Eran and Sanehira, Erin M. and Hodes, Gary and Cahen, David and Kahn, Antoine},
abstractNote = {Here, 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.},
doi = {10.1021/acsami.6b10898},
journal = {ACS Applied Materials and Interfaces},
number = 46,
volume = 8,
place = {United States},
year = {Tue Nov 08 00:00:00 EST 2016},
month = {Tue Nov 08 00:00:00 EST 2016}
}
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https://doi.org/10.1021/acsami.6b10898
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