In Situ Investigation of Halide Incorporation into Perovskite Solar Cells

Mengjin Yang; Mowafak Al-Jassim; Kai Zhu; Joseph Berry; Jeffery Aguiar; Nooraldeen Alkurd; Sarah Wozny; Maulik Patel; Weilie Zhou; Terry Holesinger

doi:10.1557/mrc.2017.52

In Situ Investigation of Halide Incorporation into Perovskite Solar Cells

Mengjin Yang, Mowafak Al-Jassim, Kai Zhu, Joseph Berry, Jeffery Aguiar, Nooraldeen Alkurd, Sarah Wozny, Maulik Patel, Weilie Zhou, Terry Holesinger

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

6 Scopus Citations

Abstract

Here we report on the material chemistry following crystallization in the presence of water vapor of chlorinated formamidinium lead-triiodide (NH₂CH = NH₂PbI_3-xCl_x) perovskite films. We found in-situ exposure to water vapor reduces, or possibly eliminates, the retention of chlorine (Cl) inside NH₂CH = NH₂PbI_3-xCl_x crystals. There is a strong tendency toward Cl volatility, which indicates the sensitivity of these materials for their integration into solar cells. The requisite for additional efforts focused on the mitigation of water vapor is reported. Based on the in situ results, hot casting (<100 °C) in dry conditions demonstrates improved film coverage and Cl retention with efficiencies reaching 12.07%.

Original language	American English
Pages (from-to)	575-582
Number of pages	8
Journal	MRS Communications
Volume	7
Issue number	3
DOIs	https://doi.org/10.1557/mrc.2017.52 https://doi.org/10.1557/mrc.2017.52
State	Published - 1 Sep 2017

Bibliographical note

Publisher Copyright:
© 2017 Materials Research Society.

NREL Publication Number

NREL/JA-5K00-68970

Keywords

dry condition
film coverage
perovskite
perovskite solar cells
water vapor

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title = "In Situ Investigation of Halide Incorporation into Perovskite Solar Cells",

abstract = "Here we report on the material chemistry following crystallization in the presence of water vapor of chlorinated formamidinium lead-triiodide (NH2CH = NH2PbI3-xClx) perovskite films. We found in-situ exposure to water vapor reduces, or possibly eliminates, the retention of chlorine (Cl) inside NH2CH = NH2PbI3-xClx crystals. There is a strong tendency toward Cl volatility, which indicates the sensitivity of these materials for their integration into solar cells. The requisite for additional efforts focused on the mitigation of water vapor is reported. Based on the in situ results, hot casting (<100 °C) in dry conditions demonstrates improved film coverage and Cl retention with efficiencies reaching 12.07%.",

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author = "Mengjin Yang and Mowafak Al-Jassim and Kai Zhu and Joseph Berry and Jeffery Aguiar and Nooraldeen Alkurd and Sarah Wozny and Maulik Patel and Weilie Zhou and Terry Holesinger",

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T1 - In Situ Investigation of Halide Incorporation into Perovskite Solar Cells

AU - Yang, Mengjin

AU - Al-Jassim, Mowafak

AU - Zhu, Kai

AU - Berry, Joseph

AU - Aguiar, Jeffery

AU - Alkurd, Nooraldeen

AU - Wozny, Sarah

AU - Patel, Maulik

AU - Zhou, Weilie

AU - Holesinger, Terry

PY - 2017/9/1

Y1 - 2017/9/1

N2 - Here we report on the material chemistry following crystallization in the presence of water vapor of chlorinated formamidinium lead-triiodide (NH2CH = NH2PbI3-xClx) perovskite films. We found in-situ exposure to water vapor reduces, or possibly eliminates, the retention of chlorine (Cl) inside NH2CH = NH2PbI3-xClx crystals. There is a strong tendency toward Cl volatility, which indicates the sensitivity of these materials for their integration into solar cells. The requisite for additional efforts focused on the mitigation of water vapor is reported. Based on the in situ results, hot casting (<100 °C) in dry conditions demonstrates improved film coverage and Cl retention with efficiencies reaching 12.07%.

AB - Here we report on the material chemistry following crystallization in the presence of water vapor of chlorinated formamidinium lead-triiodide (NH2CH = NH2PbI3-xClx) perovskite films. We found in-situ exposure to water vapor reduces, or possibly eliminates, the retention of chlorine (Cl) inside NH2CH = NH2PbI3-xClx crystals. There is a strong tendency toward Cl volatility, which indicates the sensitivity of these materials for their integration into solar cells. The requisite for additional efforts focused on the mitigation of water vapor is reported. Based on the in situ results, hot casting (<100 °C) in dry conditions demonstrates improved film coverage and Cl retention with efficiencies reaching 12.07%.

KW - dry condition

KW - film coverage

KW - perovskite

KW - perovskite solar cells

KW - water vapor

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DO - 10.1557/mrc.2017.52

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JO - MRS Communications

JF - MRS Communications

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ER -

In Situ Investigation of Halide Incorporation into Perovskite Solar Cells

Abstract

Bibliographical note

NREL Publication Number

Keywords

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