Full-color emissive bidirectional needle-like nano-tips of the hybrid of Tb/Eu-Metal organic frameworks @ inorganic halide perovskite for multifunctional applications

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-04-19 DOI:10.1016/j.materresbull.2025.113505

Santosh Kachhap , Akhilesh Kumar Singh , Sunil Kumar Singh

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Abstract

A multifunctional metal-organic framework (Tb/Eu-MOF) interfaced with an CsPbCl_1.5Br_1.5 is developed. The self-assembled Tb/Eu-MOF has a bi-directional needle-like morphology. The successful formation of the CsPbCl_1.5Br_1.5 inside the porous Tb/Eu-MOF is evidenced by the characteristic absorption edge and characteristic PL emission of CsPbCl_1.5Br_1.5. PL studies show the unilateral energy transfer from Tb³⁺ to Eu³⁺. The CsPbCl_1.5Br_1.5 does not show any optical interaction with the other two emitting centers (Eu³⁺ and Tb³⁺) and emits only by its characteristic excitation. The cool white light emission is achieved by CsPbCl_1.5Br_1.5@ Tb/Eu-MOF in PMMA matrix-coated UV-LED chip. The CIE coordinate, CCT, CRI, Vis., and color purity are calculated. Further, the excitation wavelength-dependent emission spectrum spans from blue to yellowish-red region opens the potential of the material for anti-counterfeiting application. The letter "W" encrypted on four different substrates exhibit momentous color change under different excitation wavelengths and show excellent stability over time in ambient conditions.

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用于多功能应用的 Tb/Eu-Metal 有机框架@无机卤化物过磷酸盐混合体全彩双向发射针状纳米尖端

研制了一种以cspbcl1.5 - br1.5为界面的多功能金属有机骨架（Tb/Eu-MOF）。自组装的Tb/Eu-MOF具有双向针状形态。CsPbCl1.5Br1.5的特征吸收边和特征PL发射证明了CsPbCl1.5Br1.5在多孔Tb/Eu-MOF内的成功形成。PL研究表明，能量从Tb3+向Eu3+单向转移。CsPbCl1.5Br1.5与其他两个发射中心（Eu3+和Tb3+）不表现出任何光相互作用，仅通过其特征激发发射。冷白光发射是由CsPbCl1.5Br1.5@ Tb/Eu-MOF在PMMA基包覆UV-LED芯片中实现的。计算CIE坐标、CCT、CRI、Vis和颜色纯度。此外，激发波长相关的发射光谱跨越蓝色到黄红色区域，打开了材料防伪应用的潜力。字母“W”加密在四种不同的衬底上，在不同的激发波长下表现出显著的颜色变化，并在环境条件下表现出优异的稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.