Near-infrared Cr<sup>3+</sup>-doped lead-free halide perovskite microcrystals for information encryption and temperature thermometry

Zhao, Wei; Li, Li; Ling, Faling; Wang, Yongjie; Xiang, Guotao; Zhou, Xianju; Jiang, Sha; Yang, Zhiyu; Hua, Yongbin; Yu, Jae Su

doi:10.1039/d3tc04453j

J. Mater. Chem. C

2024

DOI: 10.1039/d3tc04453j

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Near-infrared Cr³⁺-doped lead-free halide perovskite microcrystals for information encryption and temperature thermometry

Wei Zhao,

Li Li,

Faling Ling

et al.

Abstract: Lead-free double perovskite materials have attracted lots of interest because they can be doped with luminescence activators to modify their optical characteristics and improve photoluminescence performances. Herein, the solvothermal method...

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Cited by 8 publications

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Rare‐Earth‐Based Lead‐Free Halide Double Perovskites for Light Emission: Recent Advances and Applications

Rao,

Zhao,

Gong

2024

Adv Funct Materials

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The double perovskite material of Cs2NaRECl6‐type, utilizing rare‐earth (RE) ions as trivalent element, has attracted widespread interest due to its unique optoelectronic properties and wide range of applications. It displays rich optical properties, including visible and infrared light emission through down‐shifting, as well as up‐conversion emission and radiation‐induced emission. These exceptional optical properties make it a promising material for optoelectronic devices such as detectors, light‐emitting diodes, lasers and energy storage batteries but also show unique advantages in anti‐counterfeiting technology and imaging. In this article, the latest progress is reported and challenges in the crystal structure, material preparation, optoelectronic performance, and various applications of lead‐free halide double perovskite (HLDPs) compounds. This is also outline prospective research directions of existing materials, with the aim of facilitating the discovery of new HLDPs materials.

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Rare‐Earth‐Based Lead‐Free Halide Double Perovskites for Light Emission: Recent Advances and Applications

Rao,

Zhao,

Gong

2024

Adv Funct Materials

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Modeling of a Single‐Band‐Ratiometric Sensor Based on Lattice Positive Thermal Expansion in Eu³⁺‐Activated Halide Perovskite Cs₂NaEuCl₆

Rao,

Zhao,

Gong

2024

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Recently, single‐band ratiometric (SBR) thermometry has emerged as an innovative approach to traditional fluorescence thermometry, overcoming uncertainties associated with emission spectrum overlap or scattering while maintaining high spatial resolution and remote monitoring. This paper presents a novel Cs2NaEuCl6 perovskite prepared through a slow‐cooling solution method. Additionally, it proposes a temperature sensor model that relies on the thermal quenching of charge‐transfer state absorption. Mechanical studies highlight the role of lattice positive thermal expansion in affecting Eu3+ emission. Conversely, a significant emission enhancement is observed upon excitation corresponding to both the ground state and excited state absorption. The distinct luminescent behavior of this Eu3+‐activated halide perovskite model makes it suitable for developing a highly sensitive SBR‐type sensor with a relative sensitivity (Sr) exceeding 1.5% K−1 and temperature resolution (𝛿T) below 1 K at room temperature. Furthermore, it demonstrates the thermal stability during multiple heating‐cooling cycles. Finally, the practical applicability of the proposed SBR model is demonstrated by employing a self‐manufactured film sensor that enables precise real‐time temperature detection for electronic components. The work is regarded as a significant stride toward the development of cutting‐edge and exquisitely sensitive thermometers based on lanthanide‐based halide double perovskites.

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A zero-dimensional perovskite with high-efficiency luminescence and transient response for advanced information encryption

Yuan,

Wang,

Zhang

et al. 2024

Chemical Engineering Journal

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Near-infrared Cr³⁺-doped lead-free halide perovskite microcrystals for information encryption and temperature thermometry

Abstract: Lead-free double perovskite materials have attracted lots of interest because they can be doped with luminescence activators to modify their optical characteristics and improve photoluminescence performances. Herein, the solvothermal method...

Cited by 8 publications

References 57 publications

Rare‐Earth‐Based Lead‐Free Halide Double Perovskites for Light Emission: Recent Advances and Applications

Rare‐Earth‐Based Lead‐Free Halide Double Perovskites for Light Emission: Recent Advances and Applications

Modeling of a Single‐Band‐Ratiometric Sensor Based on Lattice Positive Thermal Expansion in Eu³⁺‐Activated Halide Perovskite Cs₂NaEuCl₆

A zero-dimensional perovskite with high-efficiency luminescence and transient response for advanced information encryption

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Resources

About

Near-infrared Cr3+-doped lead-free halide perovskite microcrystals for information encryption and temperature thermometry

Abstract: Lead-free double perovskite materials have attracted lots of interest because they can be doped with luminescence activators to modify their optical characteristics and improve photoluminescence performances. Herein, the solvothermal method...

Cited by 8 publications

References 57 publications

Rare‐Earth‐Based Lead‐Free Halide Double Perovskites for Light Emission: Recent Advances and Applications

Rare‐Earth‐Based Lead‐Free Halide Double Perovskites for Light Emission: Recent Advances and Applications

Modeling of a Single‐Band‐Ratiometric Sensor Based on Lattice Positive Thermal Expansion in Eu3+‐Activated Halide Perovskite Cs2NaEuCl6

A zero-dimensional perovskite with high-efficiency luminescence and transient response for advanced information encryption

Contact Info

Product

Resources

About

Near-infrared Cr³⁺-doped lead-free halide perovskite microcrystals for information encryption and temperature thermometry

Modeling of a Single‐Band‐Ratiometric Sensor Based on Lattice Positive Thermal Expansion in Eu³⁺‐Activated Halide Perovskite Cs₂NaEuCl₆