Phase control in the synthesis of cesium copper iodide compounds for their photoluminescence and radioluminescence study

Zhao, Ziqi; Li, Xitao; Xie, Lijing; Chen, Bingkun; Jiang, Ting; Cao, Jie; Zhang, Fa; Wang, Min; Wu, Yafeng; Zheng, Hong; Zhang, Fang; Wang, Yongtian

doi:10.1016/j.jlumin.2021.118482

Cited by 13 publications

(7 citation statements)

References 55 publications

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“…The morphology of both CsCu 2 I 3 NCs and CsCu 2 I 3 /MOF-801 composites was investigated by TEM. As shown in Figure B, CsCu 2 I 3 NCs exhibited a smooth rod-like structure in accordance with previous findings . However, after the in situ growth of MOF-801 on the surface of CsCu 2 I 3 NCs, the previously smooth surface became textured and adorned with numerous nanoparticles (Figure C).…”

Section: Resultssupporting

confidence: 91%

“…As shown in Figure 1B, CsCu 2 I 3 NCs exhibited a smooth rod-like structure in accordance with previous findings. 24 However, after the in situ growth of MOF-801 on the surface of CsCu 2 I 3 NCs, the previously smooth surface became textured and adorned with numerous nanoparticles (Figure 1C). In addition, the element distribution within the CsCu 2 I 3 /MOF-801 composite was comprehensively investigated using energy-dispersive X-ray spectroscopy (EDS).…”

Section: ■ Introductionmentioning

confidence: 99%

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Photoelectrochemical Sensor for H₂S Based on a Lead-Free Perovskite/Metal–Organic Framework Composite

Mao,

Zu,

Zhang

et al. 2024

Anal. Chem.

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Halide perovskites have emerged as a highly promising class of photoelectric materials. However, the application of lead-based perovskites has been hindered by their toxicity and relatively weak stability. In this work, a composite material comprising a lead-free perovskite cesium copper iodide (CsCu 2 I 3 ) nanocrystal and a metal−organic framework (MOF-801) has been synthesized through an in situ growth approach. The resulting composite material, denoted as CsCu 2 I 3 /MOF-801, demonstrates outstanding stability and exceptional optoelectronic characteristics. MOF-801 may serve a dual role by acting as a protective barrier between CsCu 2 I 3 nanocrystals and the external environment, as well as promoting the efficient transfer of photogenerated charge carriers, thereby mitigating their recombination. Consequently, CsCu 2 I 3 /MOF-801 demonstrates its utility by providing both stability and a notably high initial photocurrent. Leveraging the inherent reactivity between H 2 S and the composite material, which results in the formation of Cu 2 S and structural alteration, an exceptionally sensitive photoelectrochemical sensor for H 2 S detection has been designed. This sensor exhibits a linear detection range spanning from 0.005 to 100 μM with a remarkable detection limit of 1.67 nM, rendering it highly suitable for precise quantification of H 2 S in rat brains. This eco-friendly sensor significantly broadens the application horizon of perovskite materials and lays a robust foundation for their future commercialization.

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Section: Resultssupporting

confidence: 91%

Section: ■ Introductionmentioning

confidence: 99%

Photoelectrochemical Sensor for H₂S Based on a Lead-Free Perovskite/Metal–Organic Framework Composite

Mao,

Zu,

Zhang

et al. 2024

Anal. Chem.

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“…Chemical transformation is an interesting phenomenon and an effective way for regulating the optical properties of materials. [202][203][204] Shi's group observed the PL spectrum regulation of TCHs and achieved the reversible phase transition between yellow-emitting CsCu 2 I 3 and blue-emitting Cs 3 Cu 2 I 5 . [202] Specifically, when CsI or CuI was added into the halide products, Cs 8a).…”

Section: Phase Control and Dopingmentioning

confidence: 99%

Recent Advances and Opportunities of Eco‐Friendly Ternary Copper Halides: A New Superstar in Optoelectronic Applications

Lin

et al. 2023

Advanced Materials

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Recently, the newly‐emerging lead‐free metal‐halide materials with less toxicity and superior optoelectronic properties have received wide attention as the safer and potentially more robust alternatives to lead‐based perovskite counterparts. Among them, ternary copper halides (TCHs) have become a vital group due to their unique features, including abundant structural diversity, ease of synthesis, unprecedented optoelectronic properties, high abundance, and low cost. Although the recent efforts in this field have made certain progresses, some scientific and technological issues still remain unresolved. Herein, a comprehensive and up‐to‐date overview of recent progress on the fundamental characteristics of TCH materials and their versatile applications is presented, which contains topics such as: i) crystal and electronic structure features and synthesis strategies; ii) mechanisms of self‐trapped excitons, luminescence regulation, and environmental stability; and iii) their burgeoning optoelectronic devices of phosphor‐converted white light‐emitting diodes (WLEDs), electroluminescent LEDs, anti‐counterfeiting, X‐ray scintillators, photodetectors, sensors, and memristors. Finally, the current challenges together with future perspectives on the development of TCH materials and applications are also critically described, which is considered to be critical for accelerating the commercialization of these rapidly evolving technologies.

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“…2,8,9 Unlike the complex manufacturing processes for traditional commercial scintillators, MHP-based scintillators, with their facile preparation and tunable photoluminescence spectra, have received significant attention. 10 For example, adjusting the halide ratio in FAPbX 3 (X = Cl, Br) nanocrystals can change their luminescent wavelength from 403 to 531 nm, 11 and the thin films made of CsPbBr 3 nanosheets exhibit resolution as low as 26 μm. 4 Despite the impressive progress and prosperous potential of lead-based MHP, lead toxicity and intrinsic instability may be obstacles for practical commercial application.…”

Section: Introductionmentioning

confidence: 99%

Yellow-emissive organic copper(i) halide single crystals with [Cu₄I₄] cubane unit as efficient X-ray scintillators

Kong,

Jiang,

Sun

et al. 2024

Inorg. Chem. Front.

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Phase control in the synthesis of cesium copper iodide compounds for their photoluminescence and radioluminescence study

Cited by 13 publications

References 55 publications

Photoelectrochemical Sensor for H₂S Based on a Lead-Free Perovskite/Metal–Organic Framework Composite

Photoelectrochemical Sensor for H₂S Based on a Lead-Free Perovskite/Metal–Organic Framework Composite

Recent Advances and Opportunities of Eco‐Friendly Ternary Copper Halides: A New Superstar in Optoelectronic Applications

Yellow-emissive organic copper(i) halide single crystals with [Cu₄I₄] cubane unit as efficient X-ray scintillators

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Phase control in the synthesis of cesium copper iodide compounds for their photoluminescence and radioluminescence study

Cited by 13 publications

References 55 publications

Photoelectrochemical Sensor for H2S Based on a Lead-Free Perovskite/Metal–Organic Framework Composite

Photoelectrochemical Sensor for H2S Based on a Lead-Free Perovskite/Metal–Organic Framework Composite

Recent Advances and Opportunities of Eco‐Friendly Ternary Copper Halides: A New Superstar in Optoelectronic Applications

Yellow-emissive organic copper(i) halide single crystals with [Cu4I4] cubane unit as efficient X-ray scintillators

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Photoelectrochemical Sensor for H₂S Based on a Lead-Free Perovskite/Metal–Organic Framework Composite

Photoelectrochemical Sensor for H₂S Based on a Lead-Free Perovskite/Metal–Organic Framework Composite

Yellow-emissive organic copper(i) halide single crystals with [Cu₄I₄] cubane unit as efficient X-ray scintillators