Origin of Mechanoluminescence from Cu-Doped ZnS Particles Embedded in an Elastomer Film and Its Application in Flexible Electro-mechanoluminescent Lighting Devices

Shin, Seung Wook; Oh, Jae-Young; Hong, Chul−Un; Kim, Eun Mi; Woo, Jeong Ju; Heo, Gi Seok; Kim, Jihun

doi:10.1021/acsami.5b07594

Cited by 45 publications

(22 citation statements)

References 27 publications

(48 reference statements)

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“…To verify the molecularly diffused DCJTB effects, we hereafter describe the application of bilayer DCJTB‐diffused composite films to the color conversion of ML and EL. Prior to detailed explanation, first we note that the emission color of ZnS phosphors used in the present work is highly susceptible to various excitation forces (or frequencies) depending on mechanical (ML), electrical (EL), or optical (PL) force . That is, the emission color changes from green to blue by the increase in the excitation forces.…”

Section: Resultsmentioning

confidence: 87%

“…Various approaches have been proposed for using ML in sensor applications, mainly for visualizing crack propagation and for stress distribution . Recently, the polydimethylsiloxane (PDMS)‐supported zinc sulfide (ZnS) composite structure has received considerable attention because of its durable and color‐tunable ML characteristics. Such PDMS composites are very attractive owing to their easy fabrication, mechanical robustness, and low cost.…”

Section: Introductionmentioning

confidence: 99%

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Mechanoluminescence Color Conversion by Spontaneous Fluorescent‐Dye‐Diffusion in Elastomeric Zinc Sulfide Composite

Jeong

Song

Kim

et al. 2016

Adv Funct Materials

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wileyonlinelibrary.comtechnologies because ML can be generated by all mechanical vibrations occurring in nature. [ 3 ] Elastico-ML, luminescence by elastic deformation, has been mainly used for advanced applications because of its potential durability. [ 4,5 ] Various approaches have been proposed for using ML in sensor applications, mainly for visualizing crack propagation and for stress distribution. [5][6][7][8][9][10] Recently, the polydimethylsiloxane (PDMS)-supported zinc sulfi de (ZnS) composite structure has received considerable attention [ 3,[11][12][13][14][15][16][17] because of its durable [ 15,16 ] and color-tunable [ 3,17 ] ML characteristics. Such PDMS composites are very attractive owing to their easy fabrication, mechanical robustness, and low cost. Notably, from the viewpoint of application, the various color expression technologies could broaden the MLapplication fi elds. To date, many papers have been published reporting various inorganic compounds with color of ultraviolet, [ 18 ] blue, [ 19,20 ] green, [ 21,22 ] orange, [ 23 ] and red. [24][25][26] Alternative methods for ML color-tuning have also been proposed; the tuning characteristics were obtained by mixing different colored ML particles [ 17 ] or by changing the dopant concentration. [ 27 ] However, the strategies of previous reports have focused on color-tuning of ML material itself through newly developed inorganic ML compounds. In this paper, we introduce a new strategy for the color manipulation of ML by fl uorescent dyes physically combined with existing ML materials.Color conversion using wavelength-converter materials has been widely applied in light-emitting devices such as organic/ inorganic light-emitting diodes [28][29][30] and dye lasers. [31][32][33] Several types of wavelength-converter materials are available, such as phosphors, semiconductors, and dyes. [ 28 ] In particular, organic fl uorescent dyes are promising for the development of low-temperature solution-processed devices because organic dyes are usually soluble in various solvents. Hence, if energy-transferrable organic fl uorescent dyes with different luminescence and absorption spectra can be combined with ML materials, broad-color manipulation technology would be promoted because various emission colors can be produced depending on the dyes selected.Color conversion, long-wavelength light emission by absorbing shortwavelength light, is an attractive approach for developing a broad-color expression technology and is widely used in solid-state lighting, dye-lasers, and colorful displays. Up to now, many papers have been published reporting various mechanoluminescent materials emitting color of ultraviolet, blue, green, orange, and red. However, the strategies of previous reports have focused on color-tuning of mechanoluminescent material itself through newly developing inorganic mechanoluminescent compounds. Here, a new strategy for the color manipulation of mechanoluminescence (ML) is introduced by physically combining fl uorescent dyes with existing mechanol...

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Section: Resultsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Mechanoluminescence Color Conversion by Spontaneous Fluorescent‐Dye‐Diffusion in Elastomeric Zinc Sulfide Composite

Jeong

Song

Kim

et al. 2016

Adv Funct Materials

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“…Especially, the TL materials are usually associated with a mechanoluminescence property . Such mechanoluminescence is induced by the piezoelectric field via the piezoelectric effect of the host materials . Meanwhile, the piezoelectric response of ferroelectrics with ferroelectric domain is much larger than that of noncentric symmetry materials.…”

Section: Introductionmentioning

confidence: 58%

“…20 Such mechanoluminescence is induced by the piezoelectric field via the piezoelectric effect of the host materials. 21 Meanwhile, the piezoelectric response of ferroelectrics with ferroelectric domain is much larger than that of noncentric symmetry materials. Such characteristics of the RE-doped ferroelectrics make them a much more widely applications in modern sensing and anti-counterfeiting technique.…”

mentioning

confidence: 99%

Ferroelectric domains and luminescent properties of Pr³⁺‐doped Ca₂Nb₂O₇ ceramics

Luo

et al. 2020

J Am Ceram Soc

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Inorganic luminescent materials based on photoluminescence (PL) and thermoluminescence (TL) display considerable potential applications for optical anti‐counterfeiting devices. Ca2−xNb2O7:xPr3+ (x = 0.00075, 0.001, 0.002, 0.003, 0.004) ferroelectric ceramics have been fabricated. The basic crystal structure, local ferroelectricity and PL/TL properties of the ceramics have been investigated in this study. The PFM measurement proves that the grains in the prepared ceramics are monodomain state. Furthermore, the synthesized phosphors are embedded into polydimethylsiloxane (PDMS) matrix to fabricate a novel optothermal responsive device with high elasticity, transmittance and heat resistance. The PL and TL photographs of the designed device further demonstrate that the device is promising in practical applications such as optical anti‐counterfeiting and information storage.

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“…Mechanoluminescence : Mechanoluminescence refers to mechanical stress driving light emission on a solid . Since Francis Bacon found the phenomenon of mechanoluminescence in 1605, many materials have been used in this field.…”

Section: Applicationsmentioning

confidence: 99%

Design Principles and Material Engineering of ZnS for Optoelectronic Devices and Catalysis

Liu

Chen

et al. 2018

Adv Funct Materials

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ZnS, as one of the first semiconductors discovered and a rising material star, has embraced exciting breakthroughs in the past few years. To shed light on the design principles and engineering techniques of ZnS for improved/novel optoelectronic properties, the fundamental mechanisms and commonly employed strategies are proposed in this review. Recent progress on modifications of ZnS allows it to be extensively and effectively used in versatile applications, including transparent conductors, UV photodetectors, luminescent devices, and catalysis, which are clearly and comprehensively summarized in this work. Novel functional devices springing up from the newly developed ZnS-based materials are highlighted as well. This review not only provides a scientific insight into the advances of ZnS-based materials, but also touches on the future opportunities in this inspiring field.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201802029. relatively high charge recombination rate and low charge transport process inhibit the optoelectronic properties of ZnS as a high-performance photodetector. As a window layer of optoelectronic devices, a lack of high electrical conductivity typically hinders the practical use of ZnS in solar cells, photodiodes, light-emitting devices, etc. As a photocatalyst, the transparency of ZnS becomes a drawback as it suffers from a poor utilization of sunlight.There is not a perfect material, but the potential of developing a material is beyond limitation. The past few years have witnessed extensive designing and engineering of ZnS to explore its potentials in specific applications. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] This review summarizes the recent breakthroughs on ZnS-based materials as excellent candidates in optoelectronic devices, photocatalysis, and other novel functional devices. More importantly, it sheds light on the design principles and fundamental mechanisms of the improved performance of ZnS through strategies such as developing novel nanostructures, bandgap engineering, alloying with other materials, etc. To the best of our knowledge, it is the first comprehensive review on the design principles and material engineering of ZnS for novel/improved properties and intended applications. Briefly, current literature on a variety of ZnS-based structures was first summarized, ranging from 0D to 2D nanostructures. Then, the representative applications of ZnS-based materials are described, which are mainly consisted of four parts, as shown in Figure 1: transparent conductors, UV photodetectors, luminescent devices, and catalysis. Each part contains the latest design strategies of ZnS for the intended applications, fabrication techniques, representative examples, and the state-of-the-art devices. Finally, it outlines the challenges and opportunities in each field. In particular, we provide our perspectives on the future research directions of ZnS in energy and environment.

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Origin of Mechanoluminescence from Cu-Doped ZnS Particles Embedded in an Elastomer Film and Its Application in Flexible Electro-mechanoluminescent Lighting Devices

Cited by 45 publications

References 27 publications

Mechanoluminescence Color Conversion by Spontaneous Fluorescent‐Dye‐Diffusion in Elastomeric Zinc Sulfide Composite

Mechanoluminescence Color Conversion by Spontaneous Fluorescent‐Dye‐Diffusion in Elastomeric Zinc Sulfide Composite

Ferroelectric domains and luminescent properties of Pr³⁺‐doped Ca₂Nb₂O₇ ceramics

Design Principles and Material Engineering of ZnS for Optoelectronic Devices and Catalysis

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Origin of Mechanoluminescence from Cu-Doped ZnS Particles Embedded in an Elastomer Film and Its Application in Flexible Electro-mechanoluminescent Lighting Devices

Cited by 45 publications

References 27 publications

Mechanoluminescence Color Conversion by Spontaneous Fluorescent‐Dye‐Diffusion in Elastomeric Zinc Sulfide Composite

Mechanoluminescence Color Conversion by Spontaneous Fluorescent‐Dye‐Diffusion in Elastomeric Zinc Sulfide Composite

Ferroelectric domains and luminescent properties of Pr3+‐doped Ca2Nb2O7 ceramics

Design Principles and Material Engineering of ZnS for Optoelectronic Devices and Catalysis

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Ferroelectric domains and luminescent properties of Pr³⁺‐doped Ca₂Nb₂O₇ ceramics