Mixed bismuth-antimony-based double perovskite nanocrystals for solar cell application

Ashish Kumar; Sanjay Kumar Swami; S. S. Rawat; V. N. Singh; Om Prakash Sinha; Ritu Srivastava

doi:10.1002/er.6924

Mixed bismuth-antimony-based double perovskite nanocrystals for solar cell application

Ashish Kumar, Sanjay Kumar Swami, S. S. Rawat, V. N. Singh, Om Prakash Sinha, Ritu Srivastava

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

24 Scopus citations

Abstract

Perovskite materials are third-generation optoelectronic materials and require a lot of research work to improve their stability. Recently, lead-free double perovskite materials have attracted significant attention due to their environmental friendliness, stability, and tunable optoelectronic properties. However, a limited number of double perovskite materials have been reported for optoelectronics applications. Therefore an effort is needed to explore more lead-free double perovskites and alter the properties for their further applications. In this manuscript, we report lead-free bismuth and bismuth/antimony-based perovskite materials [Cs₂AgBiBr₆, Cs₂AgBi_0.6Sb_0.4Br_6, and Cs₂AgBi_0.6Sb_0.4(Br_0.278I_0.722)₆] nanocrystals (NCs) synthesized using the hot injection method and benzoyl bromide has been used as a precursor and trimethyl-silyl iodide (TMSI) as the iodine source for anion-exchange (from Br to Br/I). The formation of NC has been confirmed using X-ray diffraction and X-ray fluorescence spectrometer studies for phase and elemental analysis of synthesized NCs. The transmission electron microscopy of Cs₂AgBiBr₆ and Cs₂AgBi_0.6Sb_0.4Br₆-based perovskite revealed cubic-shaped NCs with size 15.0 ± 4.5 nm and 14.0 ± 5.3 nm, respectively, which changed to hexagonal (Cs₂AgBi_0.6Sb_0.4(Br_0.278 I_0.722)₆ NCs) shaped NCs with size 30 to 70 nm (after anion exchange). The successful bismuth replacement by bismuth/antimony is carried out. The time-correlated single-photon counting measurements on Cs₂AgBi_0.6Sb_0.4Br₆ NCs is carried out. The calculated average lifetimes of toluene (T)-Cs₂AgBi_0.6Sb_0.4Br₆ and dichlorobenzene D- Cs₂AgBi_0.6Sb_0.4Br₆ NCs are 4.70 ns and 8.67 ns, respectively. After the anion exchange, the average lifetime value for T-Cs₂AgBi_0.6Sb_0.4(Br_0.278I_0.722)₆ and D- Cs₂AgBi_0.6Sb_0.4(Br_0.278 I_0.722)₆ NCs are 8.73 and 9.78 ns, respectively. Additionally, the effect of light on the current density-voltage characteristics of the Cs₂AgBi_0.6Sb_0.4Br₆ NCs device has been studied to ascertain its utility in solar cells. The device is fabricated using nickel oxide and PCBM as interface layers with power conversion efficiency 0.09%.

Original language	English
Pages (from-to)	16769-16780
Number of pages	12
Journal	International Journal of Energy Research
Volume	45
Issue number	11
DOIs	https://doi.org/10.1002/er.6924
State	Published - 1 Sep 2021
Externally published	Yes

Keywords

benzoyl bromide
lead-free perovskite nanocrystals
organic solvents
solar cell

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Nuclear Energy and Engineering
Fuel Technology
Energy Engineering and Power Technology

UN SDGs

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

Access to Document

10.1002/er.6924

Cite this

@article{bccf0d5fb4684eacb0bf0cd7d3b17df7,

title = "Mixed bismuth-antimony-based double perovskite nanocrystals for solar cell application",

abstract = "Perovskite materials are third-generation optoelectronic materials and require a lot of research work to improve their stability. Recently, lead-free double perovskite materials have attracted significant attention due to their environmental friendliness, stability, and tunable optoelectronic properties. However, a limited number of double perovskite materials have been reported for optoelectronics applications. Therefore an effort is needed to explore more lead-free double perovskites and alter the properties for their further applications. In this manuscript, we report lead-free bismuth and bismuth/antimony-based perovskite materials [Cs2AgBiBr6, Cs2AgBi0.6Sb0.4Br6, and Cs2AgBi0.6Sb0.4(Br0.278I0.722)6] nanocrystals (NCs) synthesized using the hot injection method and benzoyl bromide has been used as a precursor and trimethyl-silyl iodide (TMSI) as the iodine source for anion-exchange (from Br to Br/I). The formation of NC has been confirmed using X-ray diffraction and X-ray fluorescence spectrometer studies for phase and elemental analysis of synthesized NCs. The transmission electron microscopy of Cs2AgBiBr6 and Cs2AgBi0.6Sb0.4Br6-based perovskite revealed cubic-shaped NCs with size 15.0 ± 4.5 nm and 14.0 ± 5.3 nm, respectively, which changed to hexagonal (Cs2AgBi0.6Sb0.4(Br0.278 I0.722)6 NCs) shaped NCs with size 30 to 70 nm (after anion exchange). The successful bismuth replacement by bismuth/antimony is carried out. The time-correlated single-photon counting measurements on Cs2AgBi0.6Sb0.4Br6 NCs is carried out. The calculated average lifetimes of toluene (T)-Cs2AgBi0.6Sb0.4Br6 and dichlorobenzene D- Cs2AgBi0.6Sb0.4Br6 NCs are 4.70 ns and 8.67 ns, respectively. After the anion exchange, the average lifetime value for T-Cs2AgBi0.6Sb0.4(Br0.278I0.722)6 and D- Cs2AgBi0.6Sb0.4(Br0.278 I0.722)6 NCs are 8.73 and 9.78 ns, respectively. Additionally, the effect of light on the current density-voltage characteristics of the Cs2AgBi0.6Sb0.4Br6 NCs device has been studied to ascertain its utility in solar cells. The device is fabricated using nickel oxide and PCBM as interface layers with power conversion efficiency 0.09%.",

keywords = "benzoyl bromide, lead-free perovskite nanocrystals, organic solvents, solar cell",

author = "Ashish Kumar and Swami, {Sanjay Kumar} and Rawat, {S. S.} and Singh, {V. N.} and Sinha, {Om Prakash} and Ritu Srivastava",

note = "Publisher Copyright: {\textcopyright} 2021 John Wiley & Sons Ltd.",

year = "2021",

month = sep,

day = "1",

doi = "10.1002/er.6924",

language = "English",

volume = "45",

pages = "16769--16780",

journal = "International Journal of Energy Research",

issn = "0363-907X",

publisher = "John Wiley and Sons Ltd",

number = "11",

}

TY - JOUR

T1 - Mixed bismuth-antimony-based double perovskite nanocrystals for solar cell application

AU - Kumar, Ashish

AU - Swami, Sanjay Kumar

AU - Rawat, S. S.

AU - Singh, V. N.

AU - Sinha, Om Prakash

AU - Srivastava, Ritu

PY - 2021/9/1

Y1 - 2021/9/1

N2 - Perovskite materials are third-generation optoelectronic materials and require a lot of research work to improve their stability. Recently, lead-free double perovskite materials have attracted significant attention due to their environmental friendliness, stability, and tunable optoelectronic properties. However, a limited number of double perovskite materials have been reported for optoelectronics applications. Therefore an effort is needed to explore more lead-free double perovskites and alter the properties for their further applications. In this manuscript, we report lead-free bismuth and bismuth/antimony-based perovskite materials [Cs2AgBiBr6, Cs2AgBi0.6Sb0.4Br6, and Cs2AgBi0.6Sb0.4(Br0.278I0.722)6] nanocrystals (NCs) synthesized using the hot injection method and benzoyl bromide has been used as a precursor and trimethyl-silyl iodide (TMSI) as the iodine source for anion-exchange (from Br to Br/I). The formation of NC has been confirmed using X-ray diffraction and X-ray fluorescence spectrometer studies for phase and elemental analysis of synthesized NCs. The transmission electron microscopy of Cs2AgBiBr6 and Cs2AgBi0.6Sb0.4Br6-based perovskite revealed cubic-shaped NCs with size 15.0 ± 4.5 nm and 14.0 ± 5.3 nm, respectively, which changed to hexagonal (Cs2AgBi0.6Sb0.4(Br0.278 I0.722)6 NCs) shaped NCs with size 30 to 70 nm (after anion exchange). The successful bismuth replacement by bismuth/antimony is carried out. The time-correlated single-photon counting measurements on Cs2AgBi0.6Sb0.4Br6 NCs is carried out. The calculated average lifetimes of toluene (T)-Cs2AgBi0.6Sb0.4Br6 and dichlorobenzene D- Cs2AgBi0.6Sb0.4Br6 NCs are 4.70 ns and 8.67 ns, respectively. After the anion exchange, the average lifetime value for T-Cs2AgBi0.6Sb0.4(Br0.278I0.722)6 and D- Cs2AgBi0.6Sb0.4(Br0.278 I0.722)6 NCs are 8.73 and 9.78 ns, respectively. Additionally, the effect of light on the current density-voltage characteristics of the Cs2AgBi0.6Sb0.4Br6 NCs device has been studied to ascertain its utility in solar cells. The device is fabricated using nickel oxide and PCBM as interface layers with power conversion efficiency 0.09%.

AB - Perovskite materials are third-generation optoelectronic materials and require a lot of research work to improve their stability. Recently, lead-free double perovskite materials have attracted significant attention due to their environmental friendliness, stability, and tunable optoelectronic properties. However, a limited number of double perovskite materials have been reported for optoelectronics applications. Therefore an effort is needed to explore more lead-free double perovskites and alter the properties for their further applications. In this manuscript, we report lead-free bismuth and bismuth/antimony-based perovskite materials [Cs2AgBiBr6, Cs2AgBi0.6Sb0.4Br6, and Cs2AgBi0.6Sb0.4(Br0.278I0.722)6] nanocrystals (NCs) synthesized using the hot injection method and benzoyl bromide has been used as a precursor and trimethyl-silyl iodide (TMSI) as the iodine source for anion-exchange (from Br to Br/I). The formation of NC has been confirmed using X-ray diffraction and X-ray fluorescence spectrometer studies for phase and elemental analysis of synthesized NCs. The transmission electron microscopy of Cs2AgBiBr6 and Cs2AgBi0.6Sb0.4Br6-based perovskite revealed cubic-shaped NCs with size 15.0 ± 4.5 nm and 14.0 ± 5.3 nm, respectively, which changed to hexagonal (Cs2AgBi0.6Sb0.4(Br0.278 I0.722)6 NCs) shaped NCs with size 30 to 70 nm (after anion exchange). The successful bismuth replacement by bismuth/antimony is carried out. The time-correlated single-photon counting measurements on Cs2AgBi0.6Sb0.4Br6 NCs is carried out. The calculated average lifetimes of toluene (T)-Cs2AgBi0.6Sb0.4Br6 and dichlorobenzene D- Cs2AgBi0.6Sb0.4Br6 NCs are 4.70 ns and 8.67 ns, respectively. After the anion exchange, the average lifetime value for T-Cs2AgBi0.6Sb0.4(Br0.278I0.722)6 and D- Cs2AgBi0.6Sb0.4(Br0.278 I0.722)6 NCs are 8.73 and 9.78 ns, respectively. Additionally, the effect of light on the current density-voltage characteristics of the Cs2AgBi0.6Sb0.4Br6 NCs device has been studied to ascertain its utility in solar cells. The device is fabricated using nickel oxide and PCBM as interface layers with power conversion efficiency 0.09%.

KW - benzoyl bromide

KW - lead-free perovskite nanocrystals

KW - organic solvents

KW - solar cell

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U2 - 10.1002/er.6924

DO - 10.1002/er.6924

M3 - Article

AN - SCOPUS:85107562148

SN - 0363-907X

VL - 45

SP - 16769

EP - 16780

JO - International Journal of Energy Research

JF - International Journal of Energy Research

IS - 11

ER -

Mixed bismuth-antimony-based double perovskite nanocrystals for solar cell application

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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