Journal of Materials Chemistry C
·
2024
·Vol. 13
·期 1
·242-249
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IF 5.7
Lidong Wang,Xueting Fu,Peng Du,Hai Jiang,Laihui Luo
The versatility of emission modes and colors in flexible films is essential for broadening their potential applications. This study presents the development of a multi-mode luminescent flexible film by integrating ZnS:Cu and LiNbO3:Pr3+ powders into a polydimethylsiloxane (PDMS) matrix. The ZnS:Cu and LiNbO3:Pr3+ powders are uniformly distributed in the PDMS matrix. The effect of the LiNbO3:Pr3+ content on the photoluminescence (PL), electroluminescence (EL), mechanoluminescence (ML), thermoluminescence (TL), and photostimulated luminescence (PSL) properties of the films has been investigated. The PL colors of the LiNbO3:Pr3+/ZnS:Cu/PDMS flexible films due to the distinct intrinsic emissions of ZnS:Cu and LiNbO3:Pr3+ can be changed by altering the excitation wavelength. An appropriate content of the LiNbO3:Pr3+ powder introduces PSL into the flexible films, while the films demonstrate excellent EL and ML performance, along with multicolored TL emissions, including red and green. This research offers a novel approach to enhancing flexible electronic displays, EL devices, and optical anti-counterfeiting technologies.
研究领域:
材料科学
·
光学工程
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产品关联
DOI
高影响因子
SENSORS
·
2019
·Vol. 19
·期 21
·4607
·
IF 3.031
Yaqin He,Mengyao Zhang,Nan Zhang,Danrong Zhu,Chun Huang,Ling Kang,Xiaofeng Zhou,Menghan Hu,Jian Zhang
Humidity sensors are indispensable for various electronic systems and instrumentations. To develop a new humidity sensing mechanism is the key for the next generation of sensor technology. In this work, a novel flexible paper-based current humidity sensor is proposed. The developed alternating current electroluminescent devices (ACEL) consist of the electroless plating Ni on filter paper and silver nanowires (AgNWs) as the bottom and upper electrodes, and ZnS:Cu as the phosphor layer, respectively. The proposed humidity sensor is based on ACEL with the paper substrate and the ZnS:Cu phosphor layer as the humidity sensing element. The moisture effect on the optical properties of ACELs has been studied firstly. Then, the processing parameters of the paper-based ACELs such as electroless plated bottom electrode and spin-coated phosphor layer as a function of the humidity-sensitive characteristics are investigated. The sensing mechanism of the proposed sensor has been elucidated based on theQ~Vanalysis. The sensor exhibits an excellent linearity (R2=0.99965) within the humidity range from 20% to 90% relative humidity (RH) and shows excellent flexibility. We also demonstrate its potential application in postharvest preservation where the EL light is used for preservation and the humidity can be monitored simultaneously through the current.Keywords:paper-based ACEL;capacitive humidity sensor;ZnS:Cu;flexible;high–linearity
研究领域:
材料科学
·
传感器技术
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
E.V. Zelenina,M.M. Sychov,D.A. Kolotinsky,S.N. Petrov,E.A. Vasilyeva
The percolation-like effect of sharp increase of radioluminescence intensity with the rise of wurtzite phase content in sphalerite-wurtzite mixed phase composition ZnS:Cu,Br phosphors has been observed. This result was analyzed using percolation theory, considering that formation of the composite sphalerite-wurtzite matrix promotes the expansion of the interphase border square and the activator coactivator (Cu + and Br − ) diffusion along this border forming the luminescence centers as donor-acceptor Cu ’ Zn -Br S ● . So, the curtain content of the wurtzite phase promotes the continuous diffusion pathways formation on the interphase border and improves luminescence centers forming ability. To quantify the wurtzite-sphalerite interface effect in the phosphor grain on the effective diffusion coefficients of activating impurity ions a model was developed for different ratios of the diffusion coefficients along the interphase boundary to the diffusion coefficients in the bulk of the single phase. Considering that increased diffusion results in formation of larger amount of luminescent centers and higher luminescence intensity, good agreement between model and experimental results is found.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2014
·Vol. 4
·期 48
·25183-25188
·
IF 3.708
Meihua Wang,Weifen Niu,Xin Wu,Lixia Li,Jun Yang,Shaomin Shuang,Chuan Dong
3-Mercaptopropionic acid (MPA)-capped ZnS:Cu/ZnS core/shell quantum dots (QDs) have been synthesized via a facile aqueous coprecipitation method and characterized by fluorescence, UV-Vis absorption, infrared spectroscopy and transmission electron microscopy. The fluorescence of ZnS:Cu/ZnS could be increased in the presence of uric acid (UA). The affecting factors for the fluorescence of ZnS:Cu/ZnS were examined including pH, temperature and reacting time. Under the optimized conditions, the fluorescence intensity of the ZnS:Cu/ZnS QDs against the UA concentration showed a linear response in the range of 0.66 μM to 3.3 μM with the correlation coefficient (R2) 0.9973 and the limit of detection 0.044 μM. Most relevant molecules and physiological ions had no effect on the detection of UA. The feasibility of the developed method was further demonstrated by determining the concentration of uric acid in human urine samples and the recoveries were 95% ∼ 103%. Our work provides a sensitive, selective and convenient fluorescence method to determine UA in real samples.
研究领域:
分析化学
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纳米医学
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生物传感器
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临床检验
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分子诊断
✓ 已验证
DOI
高影响因子
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
·
2025
·
IF 5.9
Rao Fu,Xiaobing Chen,Haihui Li,Huina Tang,Yuhan Qu,Zhiyuan Yin,Qi Zhang,Tonglei Cheng,Xue Zhou,Xin Yan
With the increasing demand for more powerful sensors, rapid development had been achieved. In this paper, a fluorescence(FL) and surface plasmon resonance(SPR) triple channel sensor was designed based on wavelength division multiplexing(WDM). First, ZnS:Cu powder was mixed inside polydimethylsiloxane(PDMS) to detect ultraviolet intensity(UVI) and temperature as channel 1. Second, we coated the thin core fiber(TCF) with 40 nm Ag film and carboxymethyl cellulose (CMC) to detect relative humidity(RH) as channel 2. Third, another part of TCF was coated with 40 nm Ag, 4 nm ZnO film and PDMS also to detect UVI and temperature as channel 3. The detection range and compensation accuracy of UVI, RH and T are 3.74-26.18 mW/cm2, 1.016; 20%-100% RH, 1.022 and 5-41 °C, 1.017. All the channels could be compensated to isolate single variation during simultaneous change. Compared with previous work, the first introduction of fluorescence signal into SPR sensor in this paper achieves three channels integration inside one single fiber structure, and all three parameters could be monitored simultaneously. The advantages of proposed sensor such as high accuracy, stability and multi-parameter simultaneous sensing could be quite useful in future environmental monitoring field.
研究领域:
传感技术
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材料科学
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环境监测
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产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2022
·
IF 9.463
Ningle Hou,Youwei Zhao,Tian Yuan,Ling Li,Xiaoting Li,Wenming Zhang
Flexible multifunctional pressure sensors for human motion monitoring have recently attracted extensive attention. However, the preparation of a multifunctional sensor with wide coverage and high sensitivity to pressure detection remains a considerable challenge. Here, we design a flexible multifunctional pressure sensor consisting of Cu-catechol nanowire coated carbonized nanofiber networks (Cu-CAT@CNFN) sandwiched between two interlocking polydimethylsiloxane doped with ZnS:Cu (ZnS:Cu/PDMS) composite electrode films. Due to the pressure concentration between the interlock micromastoid arrays and the thicker pressure sensitive layer, the pressure sensors demonstrate a high sensitivity of 45.40 kPa −1 , pressure detection coverage of 0 to 110 kPa, a response time of 0.166 s, outstanding cyclic stability of 5,000 cycles and visualization of the pressure. Furthermore, the pressure sensor can be used to detect pulses, wrist and elbow bending, and finger press. The excellent performance of the pressure sensor demonstrates its application potential in the next generation of wearable electronics.
研究领域:
材料科学
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电子学
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可穿戴技术
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生物医学工程
✓ 已验证
DOI
高影响因子
Inorganic Materials-Applied Research
·
2025
·Vol. 16
·期 6
·1678-1686
·
IF 0.3
Zelenina E. V.,Churkina A. V.,Snyatkov I. V.,Sychov M. M.,Bakhmetyev V. V.
ZnS:Cu, Br (0.005–0.01, 0.8 wt %) radioluminescent materials were synthesized for the first time from solid charge mixtures using a microwave sintering. The temperature range of zinc sulfide matrix recrystallization at microwave synthesis was determined in a range of 600–650°C. The microstructure and phase composition of the synthesized luminescent materials were studied; it was shown that at 650°C, a complete phase transformation of the ZnS matrix into a high-temperature wurtzite modification occurs. The spectral and brightness characteristics of tritium radioluminescence were obtained and compared with samples synthesized using a traditional solid-phase method.
研究领域:
材料科学
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发光材料
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微波处理
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核能材料
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Yi-Li Peng,Qiang-Qiang Zhu,Hao-Liang Cheng,Shuang-Qiang Fang,Yue Zhai,Le Wang
Mechanoluminescent (ML) materials hold significant potential for applications in visual stress and temperature sensing. However, most studied ML materials are largely limited to trap-controlled types, which necessitate prior optical excitation for activation and require continuous optical stimulation to maintain luminescent intensity. This dependency significantly restricts their performance in practical applications. In this study, we developed self-recoverable CGO:Eu³⁺ red-emitting ML powders and combined them with green-emitting ZnS:Cu ML powders in polydimethylsiloxane (PDMS) to facilitate visualized stress and temperature sensing. The ML intensity of CGO:Eu³⁺ and ZnS:Cu demonstrates distinct trends at varying strains; thus, the CGO:Eu³⁺-ZnS:Cu composite elastomer with a CGO:Eu³⁺ to ZnS:Cu ratio (CtZ ratio) of 4:1 exhibits the most significant ML color change in response to strain variations. Additionally, the notable difference in thermal quenching performance between CGO:Eu³⁺ and ZnS:Cu powders enables the composite elastomer with a CtZ ratio of 2:1 to differentiate temperature based on changes in ML color, achieving a maximum relative sensitivity ( S r) of 2.2 % K⁻¹ at 200 °C. The composite elastomers produced exhibited ML color changes that are easily perceptible to the human eye in response to varying stress and temperature conditions, thereby making them suitable for applications in intelligent gesture recognition and temperature detection.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2023
·
IF 3
Junpeng Zhong,Mingchao Han,Changming Li,Ronggui Li,Hongwei He
Electroluminescent (EL) filament has received much more attention on the application of smart and displayable textiles. In this work, the co-axial wet-spinning method was utilized to prepare a core/sheath filament with a copper wire as core electrode and thermal polyurethane (TPU) contained EL material of ZnS:Cu as sheath. The outside was wire-winded helically and then was coated with silver coating via magnetron sputtering , which was used as the other electrode. About 10 nm thickness silver coating was afforded after 90 s sputtering, which ensured Ag coating continuity. Finally, the filament was immersed into a waterborne polyurethane (WPU) emulsion to endow a transparent protective layer. When the ratio of Zn:S/TPU was 1:1, the as-obtained EL filament exhibited the highest luminescent efficiency. This strategy made almost all EL materials excited, which provided a promising and facilely scalable method to fabricate EL filament with high utilization rate of EL materials and luminescent efficiency.
研究领域:
材料科学
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纺织工程
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2026
·
IF 8.2
Ming-Xiao Zhu,Zhi-Hao Xing,Jian-Yi Xue,Rui Liu,Nai-Rui Zhu,Yi-Fei Zhong,Shi-Yi Li
PEDOT:PSS-treated ZnS:Cu@Al 2 O 3 fillers were designed for epoxy composites. • Interfacial energy-level regulation introduces deep traps and suppresses charge migration. • The optimized composite shows 7.35 % higher breakdown strength than pristine epoxy. • The composite enables real-time electroluminescent visualization of micro-defects. • Thermal conductivity and tensile strength are improved by 74.87 % and 19.81 %, respectively. Epoxy resins (EP) are widely used in electrical insulation and power electronic packaging, but defects such as bubbles and micropores can induce local electric field distortion and partial discharge, accelerating degradation and failure. Precise detection of micro-defects is therefore important for insulation reliability. In this work, PEDOT:PSS surface-treated ZnS:Cu@Al 2 O 3 (ZA) fillers (ZA-P x ) were incorporated into EP to develop self-diagnostic composites (EP/ZA-P x ). The ZnS:Cu core provides electroluminescent response for defect visualization. However, direct incorporation of electroluminescent fillers may promote charge transport and weaken dielectric reliability. To mitigate this issue, the Al 2 O 3 shell and PEDOT:PSS-regulated interface were introduced to create deep charge traps, suppress carrier migration, and enhance breakdown strength. Consequently, the EP/ZA-P x exhibit green electroluminescence under localized electric fields, enabling real-time micro-defect visualization. More importantly, the optimized EP/ZA-P0.01 shows a 7.35 % increase in breakdown strength over pristine EP, together with 19.81 % improvements in tensile strength, respectively. Experiments reveal deeper traps and suppressed carrier migration after PEDOT:PSS treatment, while DFT provides qualitative support for the trapping behavior. The EP/ZA-P x also detect scratches, internal/surface high-permittivity defects, and bubbles. This work provides a promising route for integrating defect visualization and insulation enhancement in electrical equipment and power electronic devices.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zhi-Hao Xing,Ming-Xiao Zhu,Jian-Yi Xue,Jia Cheng,Guang Li,Bing Xia,Chongzi Cao,Yanbing Ji,Rui Liu
Designed ZnS:Cu@SiO 2 –Pt particles for insulation enhancement and defect visualization. • Pt/SiO 2 deep traps suppress charge migration via band realignment. • 0.3 wt% loading yields 47.53 kV/mm breakdown strength (+17.56% vs EP). • Outperforms ZnS:Cu and ZnS:Cu@SiO 2 controls (+1.93% and +8.85%). • EL visualizes defects: 100 μm scratches, 300 μm high- ε defects, 480 μm bubbles. Epoxy resins (EP) are widely used for power electronic encapsulation and electrical insulation, yet insulation defects (bubbles/micropores) can trigger partial discharge (PD) and accelerate degradation. Developing new methods capable of precisely detecting micro-defects has become a key focus in failure prevention. Inspired by the luminescence of Mycena chlorophos, we proposed self-reporting EP composites to visualize micro-defects, in which biomimetic designed fillers based on strawberry-like structure particles (ZSP) were incorporated. ZnS:Cu with electroluminescence characteristics was adopted as core material, whose surface is coated with SiO 2 shell and decorated with Pt nanoparticles. ZSPs synthesized via wet-chemical routes exhibit green electroluminescence under localized electric fields, enabling real-time visualization of micrometer-scale defects. Incorporating ZSPs into EP yields self-diagnosing composites (SDCs) that combine enhanced dielectric strength with defect visualization effects. DFT calculations revealed that Pt/SiO 2 interface introduces deep trap states, which suppress the charge migration. As a result, the breakdown strength of SDCs increased by 17.57% compared to pristine EP. SDCs further demonstrate broad defect-detection capability for surface and internal defects, including high-dielectric-constant defects, scratches, and bubbles. Overall, this work establishes a material-level route that integrate condition monitoring with insulation reinforcement for high-voltage equipment and electronic modules.
✓ 已验证
DOI
高影响因子
ACS Materials Letters
·
2022
·
IF 11.17
Jiaxin Yin,Xiaoqing Huo,Xiaole Cao,Ruonan Li,Yuxuan Zhou,Tao Jiang,Longfei Wang,Zhiyi Wu,Zhong Lin Wang
Conventional electronic combination lockers are usually constructed with an active password input module, which requires the necessary electrical connections. In this work, a new passive smart electronic password locker based on photoelectric signal conversion is reported. When a ZnS-based mechanoluminescent material is subjected to an external force, the mechanical stimulus is converted into light energy. According to this light-emitting property, we developed an optical signal unit as the password input module of the password locker. Benefiting from the mechanoluminescence properties of the ZnS:Cu and randomly distributable visible light sensor, the electronic password locker key has good concealment and randomness. In addition, the surface coating treatment reduces the risk of fingerprint leakage, thus further improving the security performance of the password locker. This work broadens the application path for ZnS-based mechanoluminescence materials, which provides a novel perspective for practical applications such as a smart home.
研究领域:
材料科学
·
光电技术
·
智能家居技术
·
安全工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）