Strontium-Doped Low-Temperature-Processed CsPbI2Br Perovskite Solar Cells

Cho Fai Jonathan Lau; Meng Zhang; Xiaofan Deng; Jianghui Zheng; Jueming Bing; Qingshan Ma; Jincheol Kim; Long Hu; Martin A. Green; Shujuan Huang; Anita Ho-Baillie

doi:10.1021/acsenergylett.7b00751

Strontium-Doped Low-Temperature-Processed CsPbI₂Br Perovskite Solar Cells

Cho Fai Jonathan Lau
, Meng Zhang^*
, Xiaofan Deng
, Jianghui Zheng
, Jueming Bing
, Qingshan Ma
, Jincheol Kim
, Long Hu
, Martin A. Green
, Shujuan Huang
, Anita Ho-Baillie

^*Corresponding author for this work

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

355 Scopus citations

Abstract

Cesium (Cs) metal halide perovskites for photovoltaics have gained research interest due to their better thermal stability compared to their organic-inorganic counterparts. However, demonstration of highly efficient Cs-based perovskite solar cells requires high annealing temperature, which limits their use in multijunction devices. In this work, low-temperature-processed cesium lead (Pb) halide perovskite solar cells are demonstrated. We have also successfully incorporated the less toxic strontium (Sr) at a low concentration that partially substitutes Pb in CsPb_1-xSr_xI₂Br. The crystallinity, morphology, absorption, photoluminescence, and elemental composition of this low-temperature-processed CsPb_1-xSr_xI₂Br are studied. It is found that the surface of the perovskite film is enriched with Sr, providing a passivating effect. At the optimal concentration (x = 0.02), a mesoscopic perovskite solar cell using CsPb_0.98Sr_0.02I₂Br achieves a stabilized efficiency at 10.8%. This work shows the potential of inorganic perovskite, stimulating further development of this material.

Original language	English
Pages (from-to)	2319-2325
Number of pages	7
Journal	ACS Energy Letters
Volume	2
Issue number	10
DOIs	https://doi.org/10.1021/acsenergylett.7b00751
State	Published - 13 Oct 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© Published 2017 by the American Chemical Society.

UN SDGs

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

SDG 7 Affordable and Clean Energy

ASJC Scopus subject areas

Chemistry (miscellaneous)
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Materials Chemistry

Access to Document

10.1021/acsenergylett.7b00751

Cite this

@article{73b6449b31bd4438a7fe7bfec82c8595,

title = "Strontium-Doped Low-Temperature-Processed CsPbI2Br Perovskite Solar Cells",

abstract = "Cesium (Cs) metal halide perovskites for photovoltaics have gained research interest due to their better thermal stability compared to their organic-inorganic counterparts. However, demonstration of highly efficient Cs-based perovskite solar cells requires high annealing temperature, which limits their use in multijunction devices. In this work, low-temperature-processed cesium lead (Pb) halide perovskite solar cells are demonstrated. We have also successfully incorporated the less toxic strontium (Sr) at a low concentration that partially substitutes Pb in CsPb1-xSrxI2Br. The crystallinity, morphology, absorption, photoluminescence, and elemental composition of this low-temperature-processed CsPb1-xSrxI2Br are studied. It is found that the surface of the perovskite film is enriched with Sr, providing a passivating effect. At the optimal concentration (x = 0.02), a mesoscopic perovskite solar cell using CsPb0.98Sr0.02I2Br achieves a stabilized efficiency at 10.8\%. This work shows the potential of inorganic perovskite, stimulating further development of this material.",

author = "Lau, \{Cho Fai Jonathan\} and Meng Zhang and Xiaofan Deng and Jianghui Zheng and Jueming Bing and Qingshan Ma and Jincheol Kim and Long Hu and Green, \{Martin A.\} and Shujuan Huang and Anita Ho-Baillie",

note = "Publisher Copyright: {\textcopyright} Published 2017 by the American Chemical Society.",

year = "2017",

month = oct,

day = "13",

doi = "10.1021/acsenergylett.7b00751",

language = "English",

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journal = "ACS Energy Letters",

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TY - JOUR

T1 - Strontium-Doped Low-Temperature-Processed CsPbI2Br Perovskite Solar Cells

AU - Lau, Cho Fai Jonathan

AU - Zhang, Meng

AU - Deng, Xiaofan

AU - Zheng, Jianghui

AU - Bing, Jueming

AU - Ma, Qingshan

AU - Kim, Jincheol

AU - Hu, Long

AU - Green, Martin A.

AU - Huang, Shujuan

AU - Ho-Baillie, Anita

PY - 2017/10/13

Y1 - 2017/10/13

N2 - Cesium (Cs) metal halide perovskites for photovoltaics have gained research interest due to their better thermal stability compared to their organic-inorganic counterparts. However, demonstration of highly efficient Cs-based perovskite solar cells requires high annealing temperature, which limits their use in multijunction devices. In this work, low-temperature-processed cesium lead (Pb) halide perovskite solar cells are demonstrated. We have also successfully incorporated the less toxic strontium (Sr) at a low concentration that partially substitutes Pb in CsPb1-xSrxI2Br. The crystallinity, morphology, absorption, photoluminescence, and elemental composition of this low-temperature-processed CsPb1-xSrxI2Br are studied. It is found that the surface of the perovskite film is enriched with Sr, providing a passivating effect. At the optimal concentration (x = 0.02), a mesoscopic perovskite solar cell using CsPb0.98Sr0.02I2Br achieves a stabilized efficiency at 10.8%. This work shows the potential of inorganic perovskite, stimulating further development of this material.

AB - Cesium (Cs) metal halide perovskites for photovoltaics have gained research interest due to their better thermal stability compared to their organic-inorganic counterparts. However, demonstration of highly efficient Cs-based perovskite solar cells requires high annealing temperature, which limits their use in multijunction devices. In this work, low-temperature-processed cesium lead (Pb) halide perovskite solar cells are demonstrated. We have also successfully incorporated the less toxic strontium (Sr) at a low concentration that partially substitutes Pb in CsPb1-xSrxI2Br. The crystallinity, morphology, absorption, photoluminescence, and elemental composition of this low-temperature-processed CsPb1-xSrxI2Br are studied. It is found that the surface of the perovskite film is enriched with Sr, providing a passivating effect. At the optimal concentration (x = 0.02), a mesoscopic perovskite solar cell using CsPb0.98Sr0.02I2Br achieves a stabilized efficiency at 10.8%. This work shows the potential of inorganic perovskite, stimulating further development of this material.

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