Fully-inorganic strontium incorporated CsPbI2Br perovskite solar cells with promoted efficiency and stability

Jyoti V. Patil; Sawanta S. Mali; Chang Kook Hong

doi:10.1016/j.jechem.2021.04.003

Fully-inorganic strontium incorporated CsPbI₂Br perovskite solar cells with promoted efficiency and stability

Jyoti V. Patil, Sawanta S. Mali, Chang Kook Hong^*

^*Corresponding author for this work

Pure And Applied Chemistry

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

30 Citations (Scopus)

Abstract

In the present investigation, we fabricated strontium (Sr²⁺) incorporated CsPbI₂Br-based inorganic perovskite solar cells in ambient conditions. The morphology, crystallinity, absorption, elemental composition and photoluminescence analysis of the bare CsPbI₂Br and CsPb_1-_xSr_xI₂Br perovskite thin films were studied systematically to investigate the role of Sr²⁺ incorporation. It is observed that the surface morphology of the CsPbI₂Br perovskite thin film has been improved by partial substitution of Pb²⁺ by Sr²⁺ which facilitates photoactive black phase-stabilization and defect passivation. The champion device having CsPb_0.98Sr_0.02I₂Br composition exhibited a power conversion efficiency (PCE) of 16.61% which is much higher than the bare device (13.65%). Furthermore, our CsPb_0.98Sr_0.02I₂Br-based devices maintain > 85% of its initial efficiency over 100 h in ambient conditions.

Original language	English
Pages (from-to)	451-458
Number of pages	8
Journal	Journal of Energy Chemistry
Volume	62
Early online date	20 Apr 2021
DOIs	https://doi.org/10.1016/j.jechem.2021.04.003
Publication status	Published - Nov 2021

Funding

This work was supported by Priority Research Centre Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology (NRF-2018R1A6A1A03024334). Also, this work was supported by Priority Research Centre Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology (2020R1A2C2004880).

Keywords

All-inorganic perovskites
Deposition method
Phase stability
Promoted efficiency
Strontium incorporation

Access to Document

10.1016/j.jechem.2021.04.003

Cite this

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title = "Fully-inorganic strontium incorporated CsPbI2Br perovskite solar cells with promoted efficiency and stability",

abstract = "In the present investigation, we fabricated strontium (Sr2+) incorporated CsPbI2Br-based inorganic perovskite solar cells in ambient conditions. The morphology, crystallinity, absorption, elemental composition and photoluminescence analysis of the bare CsPbI2Br and CsPb1-xSrxI2Br perovskite thin films were studied systematically to investigate the role of Sr2+ incorporation. It is observed that the surface morphology of the CsPbI2Br perovskite thin film has been improved by partial substitution of Pb2+ by Sr2+ which facilitates photoactive black phase-stabilization and defect passivation. The champion device having CsPb0.98Sr0.02I2Br composition exhibited a power conversion efficiency (PCE) of 16.61% which is much higher than the bare device (13.65%). Furthermore, our CsPb0.98Sr0.02I2Br-based devices maintain > 85% of its initial efficiency over 100 h in ambient conditions.",

keywords = "All-inorganic perovskites, Deposition method, Phase stability, Promoted efficiency, Strontium incorporation",

author = "Patil, {Jyoti V.} and Mali, {Sawanta S.} and Hong, {Chang Kook}",

year = "2021",

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language = "English",

volume = "62",

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TY - JOUR

T1 - Fully-inorganic strontium incorporated CsPbI2Br perovskite solar cells with promoted efficiency and stability

AU - Patil, Jyoti V.

AU - Mali, Sawanta S.

AU - Hong, Chang Kook

PY - 2021/11

Y1 - 2021/11

N2 - In the present investigation, we fabricated strontium (Sr2+) incorporated CsPbI2Br-based inorganic perovskite solar cells in ambient conditions. The morphology, crystallinity, absorption, elemental composition and photoluminescence analysis of the bare CsPbI2Br and CsPb1-xSrxI2Br perovskite thin films were studied systematically to investigate the role of Sr2+ incorporation. It is observed that the surface morphology of the CsPbI2Br perovskite thin film has been improved by partial substitution of Pb2+ by Sr2+ which facilitates photoactive black phase-stabilization and defect passivation. The champion device having CsPb0.98Sr0.02I2Br composition exhibited a power conversion efficiency (PCE) of 16.61% which is much higher than the bare device (13.65%). Furthermore, our CsPb0.98Sr0.02I2Br-based devices maintain > 85% of its initial efficiency over 100 h in ambient conditions.

AB - In the present investigation, we fabricated strontium (Sr2+) incorporated CsPbI2Br-based inorganic perovskite solar cells in ambient conditions. The morphology, crystallinity, absorption, elemental composition and photoluminescence analysis of the bare CsPbI2Br and CsPb1-xSrxI2Br perovskite thin films were studied systematically to investigate the role of Sr2+ incorporation. It is observed that the surface morphology of the CsPbI2Br perovskite thin film has been improved by partial substitution of Pb2+ by Sr2+ which facilitates photoactive black phase-stabilization and defect passivation. The champion device having CsPb0.98Sr0.02I2Br composition exhibited a power conversion efficiency (PCE) of 16.61% which is much higher than the bare device (13.65%). Furthermore, our CsPb0.98Sr0.02I2Br-based devices maintain > 85% of its initial efficiency over 100 h in ambient conditions.

KW - All-inorganic perovskites

KW - Deposition method

KW - Phase stability

KW - Promoted efficiency

KW - Strontium incorporation

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DO - 10.1016/j.jechem.2021.04.003

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