Efficient Solar Spectrum-Like White-Light Emission in Zinc-Based Zero-Dimensional Hybrid Metal Halides

Shihui He; Shiqiang Hao; Liubing Fan; Kunjie Liu; Chuxin Cai; Christopher Wolverton; Jing Zhao; Quanlin Liu

doi:10.1002/adom.202300218

Efficient Solar Spectrum-Like White-Light Emission in Zinc-Based Zero-Dimensional Hybrid Metal Halides

Shihui He, Shiqiang Hao, Liubing Fan, Kunjie Liu, Chuxin Cai, Christopher Wolverton, Jing Zhao^*, Quanlin Liu^*

^*Corresponding author for this work

Materials Science and Engineering

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

25 Scopus citations

Abstract

Organic–inorganic metal halides (OIMHs) with high-efficiency solar spectrum-like emission are attracting broad and current interest. Here, five 0D Zn-based hybrid halides are synthesized based on aromatic organic cations with different carbon-chain lengths: C₆H₅CH₂NH₃⁺ (PMA⁺) and C₆H₅(CH₂)₄NH₃⁺ (PBA⁺). (PMA)₂ZnCl₄ exhibits the highest photoluminescence quantum yield of 37.2% of reported Zn-based white-emission OIMHs. The emission spectrum of (PBA)₂ZnI₄ indicates a color rendering index of 98, which is the highest among single-component white-light-emitting phosphors. Spectral characterizations and density functional theory calculations demonstrate that the extremely broad emission of (PBA)₂ZnI₄ originates from the synergistic emission of organic cations and self-trapped excitons. The optical properties of the obtained (PMA)₂ZnBr₄, (PMA)₂ZnI₄·H₂O, and (PBA)₂ZnCl₄ are also characterized for comparison, and with the same organic cations, the PLQY decreases from chloride to bromide to iodide. This work demonstrates that the selection of appropriate organics and halogens can enable fine tuning of single-component white-light emission, satisfying varying needs for solid-state lighting.

Original language	English (US)
Article number	2300218
Journal	Advanced Optical Materials
Volume	11
Issue number	15
DOIs	https://doi.org/10.1002/adom.202300218
State	Published - Aug 7 2023

Funding

This work was supported by the National Key Research and Development Program of China (No. 2021YFA0718900). This work was also supported by the National Natural Science Foundation of China (52272133 and 51972021) and Fundamental Research Funds for the Central Universities FRF‐IDRY‐GD21‐005. S.Hao and C.W. (DFT calculations) acknowledge support from the Department of Energy, Office of Science, Basic Energy Sciences under Grant DE‐SC0014520.

Keywords

color rendering index
organic–inorganic metal halides
white light emission

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

Access to Document

10.1002/adom.202300218

Cite this

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title = "Efficient Solar Spectrum-Like White-Light Emission in Zinc-Based Zero-Dimensional Hybrid Metal Halides",

abstract = "Organic–inorganic metal halides (OIMHs) with high-efficiency solar spectrum-like emission are attracting broad and current interest. Here, five 0D Zn-based hybrid halides are synthesized based on aromatic organic cations with different carbon-chain lengths: C6H5CH2NH3+ (PMA+) and C6H5(CH2)4NH3+ (PBA+). (PMA)2ZnCl4 exhibits the highest photoluminescence quantum yield of 37.2\% of reported Zn-based white-emission OIMHs. The emission spectrum of (PBA)2ZnI4 indicates a color rendering index of 98, which is the highest among single-component white-light-emitting phosphors. Spectral characterizations and density functional theory calculations demonstrate that the extremely broad emission of (PBA)2ZnI4 originates from the synergistic emission of organic cations and self-trapped excitons. The optical properties of the obtained (PMA)2ZnBr4, (PMA)2ZnI4·H2O, and (PBA)2ZnCl4 are also characterized for comparison, and with the same organic cations, the PLQY decreases from chloride to bromide to iodide. This work demonstrates that the selection of appropriate organics and halogens can enable fine tuning of single-component white-light emission, satisfying varying needs for solid-state lighting.",

keywords = "color rendering index, organic–inorganic metal halides, white light emission",

author = "Shihui He and Shiqiang Hao and Liubing Fan and Kunjie Liu and Chuxin Cai and Christopher Wolverton and Jing Zhao and Quanlin Liu",

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AU - He, Shihui

AU - Hao, Shiqiang

AU - Fan, Liubing

AU - Liu, Kunjie

AU - Cai, Chuxin

AU - Wolverton, Christopher

AU - Zhao, Jing

AU - Liu, Quanlin

PY - 2023/8/7

Y1 - 2023/8/7

N2 - Organic–inorganic metal halides (OIMHs) with high-efficiency solar spectrum-like emission are attracting broad and current interest. Here, five 0D Zn-based hybrid halides are synthesized based on aromatic organic cations with different carbon-chain lengths: C6H5CH2NH3+ (PMA+) and C6H5(CH2)4NH3+ (PBA+). (PMA)2ZnCl4 exhibits the highest photoluminescence quantum yield of 37.2% of reported Zn-based white-emission OIMHs. The emission spectrum of (PBA)2ZnI4 indicates a color rendering index of 98, which is the highest among single-component white-light-emitting phosphors. Spectral characterizations and density functional theory calculations demonstrate that the extremely broad emission of (PBA)2ZnI4 originates from the synergistic emission of organic cations and self-trapped excitons. The optical properties of the obtained (PMA)2ZnBr4, (PMA)2ZnI4·H2O, and (PBA)2ZnCl4 are also characterized for comparison, and with the same organic cations, the PLQY decreases from chloride to bromide to iodide. This work demonstrates that the selection of appropriate organics and halogens can enable fine tuning of single-component white-light emission, satisfying varying needs for solid-state lighting.

AB - Organic–inorganic metal halides (OIMHs) with high-efficiency solar spectrum-like emission are attracting broad and current interest. Here, five 0D Zn-based hybrid halides are synthesized based on aromatic organic cations with different carbon-chain lengths: C6H5CH2NH3+ (PMA+) and C6H5(CH2)4NH3+ (PBA+). (PMA)2ZnCl4 exhibits the highest photoluminescence quantum yield of 37.2% of reported Zn-based white-emission OIMHs. The emission spectrum of (PBA)2ZnI4 indicates a color rendering index of 98, which is the highest among single-component white-light-emitting phosphors. Spectral characterizations and density functional theory calculations demonstrate that the extremely broad emission of (PBA)2ZnI4 originates from the synergistic emission of organic cations and self-trapped excitons. The optical properties of the obtained (PMA)2ZnBr4, (PMA)2ZnI4·H2O, and (PBA)2ZnCl4 are also characterized for comparison, and with the same organic cations, the PLQY decreases from chloride to bromide to iodide. This work demonstrates that the selection of appropriate organics and halogens can enable fine tuning of single-component white-light emission, satisfying varying needs for solid-state lighting.

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KW - white light emission

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Efficient Solar Spectrum-Like White-Light Emission in Zinc-Based Zero-Dimensional Hybrid Metal Halides

Abstract

Funding

Keywords

ASJC Scopus subject areas

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CCDC 2231810: Experimental Crystal Structure Determination

CCDC 2231808: Experimental Crystal Structure Determination

CCDC 2231807: Experimental Crystal Structure Determination

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Efficient Solar Spectrum-Like White-Light Emission in Zinc-Based Zero-Dimensional Hybrid Metal Halides

Abstract

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Datasets

CCDC 2231810: Experimental Crystal Structure Determination

CCDC 2231808: Experimental Crystal Structure Determination

CCDC 2231807: Experimental Crystal Structure Determination

Cite this