OPTICAL MATERIALS
·
2021
·
IF 3.08
Zuodong Liu,Qilong Shen,Yuqing Wang,Songchang Fu,Litao Yang,Xue Chen,Bing Liu,Guoqiang Yi,Bingchu Mei,Qiangshan Jing,Peng Liu
A series of PrF 3 -doped SrF 2 ceramics were fabricated by the hot-pressed (HP) sintering method. The influence of PrF 3 concentrations on the microstructure and optical characterizations of transparent ceramics was investigated. PrF 3 doping was found to have a positive effect on increasing optical transmittance . The luminescence intensity and lifetime quenching of Pr:SrF 2 ceramics at high doping concentrations were attributed to the Pr 3+ -Pr 3+ interactions through the intense CR process. The luminescence color of Pr:SrF 2 ceramics was tuned from the blue region to the reddish region, and finally to the orange region with increasing PrF 3 concentrations. The effect of sintering temperature on the optical transmittance and microstructure of Pr:SrF 2 ceramics was also measured and discussed. The highest transmittance of the Pr:SrF 2 ceramic (doped with 5 wt% PrF 3 and sintered at 950 °C) at 350 nm and 1200 nm were 90.4% and 91.9%, respectively.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 105
·期 7
·4581-4587
·
IF 4.186
Xinwen Liu,Guolong Tan,Weiwei Li,Bingchu Mei
The 2 at.% Yb 3+ :Sr 5 (PO 4 ) 3 F (S-FAP) polycrystalline transparent ceramic with asymmetric hexagonal structures has been synthesized by vacuum hot-pressing the nanoparticles prepared via coprecipitation method. X-ray diffraction results of powder and ceramic indicate that their phase peaks are well matched to the crystal structure of S-FAP. The average particle size of 35.5 nm has been exhibited by powder scanning electron microscopy images, and subsequent images of the ceramic cross section and surface morphology revealed a homogenous and compact microstructure with an average grain size of around 220 nm. The relationship between the optical loss caused by the scattering of anisotropic ceramic grains and the optical transmittance of ceramics was revealed in the hexagonal S-FAP transparent ceramics with different thicknesses. The in-line transmittance of hot-pressed ceramics with 1.5-mm thickness achieved 79.95% at 1100-nm wavelength, and the room-temperature absorption and emission spectra of Yb 3+ in S-FAP polycrystalline ceramic matrix were measured using a spectrofluorometer.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Danping Wang,Erwei Cheng,Zhaoming Qu,Yingying Wang,Qingguo Wang
Ag thin films having attractive optical transmittance and effective shielding capability are usually used as a preferred choice for the transparent electromagnetic shielding windows. Whereas, the Ag films are grown primarily via an island growth (Volmer-Weber) mechanism, which greatly restricts its application. In this study, by introducing Al atoms and suitable annealing treatment, the continuous and smooth Ag thin films are successfully fabricated by magnetron co-sputtering method. The effect of annealing temperature on the microstructure, optical and electromagnetic shielding properties of the films are conducted the comprehensive and profound study. Our results indicate that the 5 mol% Al-Ag thin film annealed at 200 °C could transform into planar growth structure, and display excellent the highest optical transmittance 89.15 % at 550 nm. Meanwhile, the shielding effectiveness (SE) reaches a peak value of 28.1 dB. 500 °C is estimated as the threshold annealing temperature of Al-Ag thin film with comprehensive performances gradually declining. Moreover, the Al dopants significantly improve the thermal stability of Ag thin films than that of the pure Ag films. These findings are of important guidance for the preparation of high-quality Al-Ag thin films to meet the practical applications.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2022
·
IF 4.171
Zuodong Liu,Qilong Shen,Yue Cao,Siya Li,Xue Chen,Jiashun Wang,Yongsheng Yu,Bingchu Mei,Qiangshan Jing,Peng Liu
Pr, La:SrF 2 ceramics co-doped with various amounts of LaF 3 were fabricated by hot-pressing (HP) sintering in a vacuum environment. The transmittance of the Pr, La:SrF 2 ceramics was gradually improved with the increase in sintering temperature , and the sintering temperature of 1000 °C was adequate to fabricate highly transparent ceramics without rapid grain growth. Residual pores and undissolved PrF 3 /LaF 3 fluorides were identified as light scattering defects within the ceramic sintered at 830 °C. The effect of LaF 3 on the microstructural, transmittance, and spectroscopic characteristics of ceramics was studied systematically. The luminescence intensity of the Pr, La:SrF 2 ceramics was drastically enhanced through LaF 3 co-doping, while the optical transmittance first slightly increased and then decreased. The ceramic sample co-doped with 1 wt% LaF 3 exhibits the highest transmittance with the smallest grain size of 43.4 μm, and the transmittance reaches 87.8% at 400 nm and 87.2% at 1100 nm.
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
ADVANCED FUNCTIONAL MATERIALS
·
2023
·
IF 19
Haojun Li,Qingqing Jin,Haibo Li,Hua Tong,Keke Wang,Shuoran Chen,Gangfeng Ouyang,Zuankai Wang,Yanan Li
Developing transparent and superamphiphobic materials that can repel low-surface-tension liquids is attractive for fundamental research and industrial applications. Despite great progress, it remains a daunting challenge to scalably fabricate highly transparent superamphiphobic materials because of the inherent paradox in surface roughness to achieve superamphiphobicity and optical transparency. Herein, a scalable template-assisted spray coating method is developed to form hierarchical nano re-entrant structures that eliminate the visible-light scattering while maintaining optical transmittance above 88% in the visible region, besides retaining the superamphiphobicity to various low surface-tension liquids. In addition to exhibiting improved mechanical, chemical, and thermal stabilities, these transparent superamphiphobic materials can also be applied on various substrates, including curved surfaces and solar panels, to enhance their optical stability. This study believes that these excellent overall properties possess enormous potential for various applications involving self-cleaning, anti-fouling, and anti-counterfeiting.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2018
·
IF 3.483
Wenbo Shen,Ling Wang,Tingjun Zhong,Gang Chen,Chunxin Li,Mei Chen,Cuihong Zhang,Lanying Zhang,Kexuan Li,Zhou Yang,Huai Yang
In this paper, we report the design, preparation and properties of epoxy-mercaptan polymer/nematic liquid crystal (LC) composites with electrically switchable optical transmittance. It is found that the polymer microstructure can be regulated from porous structure to microspheres or beads by appropriately modulating the curing temperature, the molecular structure of mercaptan, as well as the compositions of epoxy, mercaptan and nematic LC host. Under an external electric field, the thin films based on such composites can switch from opaque to transparent. The electro-optical performance is found to be highly dependent on the polymer microstructures and the optimum characteristics can be achieved in the composite with a microstructure of smaller microspheres. The possible mechanism for the formation of polymer microspheres and the effects of the microstructures on the electro-optical characteristics of the composites are also discussed. This work is expected to provide an efficient way to control the microstructure of epoxy/mercaptan polymer and develop the composites with switchable optical transmittances for both civil and military applications.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2019
·Vol. 90
·期 2
·330-338
·
IF 1.986
Zhang Xiaoling,Lu Qing,Cheng Yuan,Liu Liyue,Shan Yongkui,Zhang Ganghua,Li Dezeng
Abstract Broadband antireflection coatings (ARCs) attract increasing attentions due to the effective reduction of reflection between the interface of air and substrates over a broad range of wavelengths. Moth-eye-like array ARCs with high antireflection performance have been successfully fabricated via a facile and low-cost sol–gel method using solid silica nanospheres (SSNSs) and hollow silica nanospheres (HSNSs). The composite of SSNSs and HSNSs was closely arranged on the glass substrate to firstly construct the close-packed solid/hollow silica nanospheres (c-S/HSNSs) array, in which HSNSs were used to regulate the refractive index and many triangular grooves among adjacent nanospheres were formed. Then moth-eye-like array structure was obtained by locating the nanospheres on the groove positions in c-S/HSNSs array. The transmittance of glass substrates with moth-eye-like array structure has been increased from 91.0% to 99.0%, with an average solar transmittance of 97.8%. The reflection of glass substrates with moth-eye-like array structure was prominently reduced in wide-angle incidence, and the minimum reflectance changed from 0.17% to 1.34% within 8 to 60°. The moth-eye-like array structure exhibits the high antireflection performance and excellent thermal stability and is promising in photovoltaic modules, optical lenses, and other outdoor applications.
Graphical abstract includes the process of preparation (left) and SEM images of morphologies and structures of moth-eye-like array, in which the inset is the crosssectional structure of moth-eye-like array (middle), and the transmittance of moth-eyelike array and c-S/HSNSs array in the range of 350–800 nm (right).
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
Sustainable Materials and Technologies
·
2024
·
IF 8.6
Jiamin Wu,Yang Wang,Yasser Vasseghian,Yingkuan Du,Hesam Kamyab,Haslenda Hashim,Changlei Xia
Transparent wood derived from renewable biomass resources has an enormous potential for utilizing in constructions, electrons devices, energy storage, etc. However, due to its high polymer content, the currently described transparent wood could not be developed in a sustainable manner. Herein, a feasible strategy for synthesizing compressed transparent wood was proposed to minimize the content of polymerized poly(methyl methacrylate) in composites, involving the poly(methyl methacrylate) partial-filling into the delignified wood and densification . This synthesis method prompted a substantial reduction of poly(methyl methacrylate) content (58.8%) in the obtained compressed transparent wood contrasted with the typical transparent wood (91.8% poly(methyl methacrylate) content). Besides, an ideal optical transmittance of 77.9% with 0.4 mm thickness and an optical haze of 49.2% with 0.7 mm thickness at 800 nm wavelength were achieved. Also, the improved tensile strength and flexural strength of compressed transparent wood were up to 85.0 MPa and 145.3 MPa, respectively. Additionally, a comparative life cycle assessment was conducted to assess the environmental impacts. The total environmental impact score was separately reduced by 23%, and 28% compared to the typical transparent wood and poly(methyl methacrylate) polymer, suggesting the feasibility of sustainable manufacture of transparent wood materials by decreasing polymer content. The compressed transparent wood also showed much lower thermal conductivities (0.28–0.31 W/mk) than glass and contributed to offering uniform illumination.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2023
·Vol. 11
·期 7
·2202287
·
IF 9
Jie Liang,Hao Wang,Tao Hu,Chao Shan,Qing Yang,Chengjun Zhang,Tongzhen Yang,Zheng Fang,Xun Hou,Feng Chen
Fog generation can severely damage optical systems by degrading the light absorption rate and imaging quality of optical components. Furthermore, fog can reduce the light flux and transmittance of the optical system, resulting in poor imaging clarity and contrast. Studies have focused on minimizing fog formation and effects. Drawbacks such as high energy consumption and waste pollution severely limit the application of conventional methods. However, achieving high fog resistance of optical components remains a challenge. A novel method of fabricating anti-fogging slippery surfaces (inspired by the anti-fog mechanism of the mammalian cornea) on silica glass by using femtosecond lasers is proposed to achieve durable and environment-friendly optical devices that can achieve anti-fogging in real time. The femtosecond laser wet etching method is used to fabricate the inside cabin of glass. The cabin filled with graphene spontaneously heats the sample under sunlight to prevent fog formation. In addition to exhibiting excellent anti-fogging characteristics, the prepared sample achieves high optical transmittance, high durability, and excellent self-repair capability. Thus, the proposed method exhibits considerable potential for application in numerous domains.
研究领域:
材料科学
·
光学
·
激光工程
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2016
·
IF 4.732
Weixin Li,Qinghui Jiang,Junyou Yang,Yubo Luo,Xin Li,Yaru Hou,Shuqin Zhou
In this study, ZnO/Zn 2 SnO 4 (ZSO) composite is synthesized as a promising alternative compact layer to TiO 2 by spray pyrolysis method. Owing to the ZnO/ZSO composite possesses higher carrier mobility and suitable band gap structure, it will behave well in the application of solar cells. The characterization results show that the ZnO/ZSO composite compact layer manifests better optical transmittance , enhanced electrons collective efficiency and superior electrical conductivity . Consequently, the corresponding photo-current is improved effectively when compared with that of TiO 2 compact layer. The optimum efficiency of perovskite solar cell based on the ZnO/ZSO composite compact layer reaches 12.03% at AM 1.5 solar light of 100 mW cm −2 , which is 18% higher than that of perovskite solar cell based on the TiO 2 compact layer.
研究领域:
材料科学
·
太阳能
·
光伏技术
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2016
·Vol. 6
·期 1
·1-11
·
IF 5.228
Han Yu,Lin Jie,Liu Yuxuan,Fu Hao,Ma Yuan,Jin Peng,Tan Jiubin
Our daily electromagnetic environment is becoming increasingly complex with the rapid development of consumer electronics and wireless communication technologies, which in turn necessitates the development of electromagnetic interference (EMI) shielding, especially for transparent components. We engineered a transparent EMI shielding film with crack-template based metallic mesh (CT-MM) that shows highly homogeneous light transmission and strong microwave shielding efficacy. The CT-MM film is fabricated using a cost-effective lift-off method based on a crackle template. It achieves a shielding effectiveness of ~26 dB, optical transmittance of ~91% and negligible impact on optical imaging performance. Moreover, high–quality CT-MM film is demonstrated on a large–calibre spherical surface. These excellent properties of CT-MM film, together with its advantages of facile large-area fabrication and scalability in processing on multi-shaped substrates, make CT-MM a powerful technology for transparent EMI shielding in practical applications.
研究领域:
材料科学
·
电磁工程
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Zhen Su,Huihui Yang,Gang Wang,Yilei Zhang,Jia Zhang,Junhao Lin,Dechang Jia,Heyan Wang,Zhengang Lu,PingAn Hu
The multiple requirements of optical transmittance , high shielding effectiveness, and long-term stability bring considerable challenge to electromagnetic interference (EMI) shielding in the fields of visualization windows, transparent optoelectronic devices, and aerospace equipment. To this end, attempts were hereby made, and based on high-quality single crystal graphene (SCG)/hexagonal boron nitride (h-BN) heterostructure , transparent EMI shielding films with weak secondary reflection, nanoscale ultra-thin thickness and long-term stability were finally realized by a composite structure. In this novel structure, SCG was adopted as the absorption layer, while sliver nanowires (Ag NWs) film acted as the reflection layer. These two layers were placed on different sides of the quartz to form a cavity, which achieved the dual coupling effect, so that the electromagnetic wave was reflected multiple times to form more absorption loss. Among the absorption dominant shielding films, the composite structure in this work demonstrated stronger shielding effectiveness of 28.76 dB with a higher light transmittance of 80.6%. In addition, under the protection of the outermost h-BN layer, the decline range of the shielding performance of the shielding film was extensively reduced after 30 days of exposure to air and maintained long-term stability. Overall, this study provides an outstanding EMI shielding material with great potential for practical applications in electronic devices protection.
研究领域:
材料科学
·
电磁干扰屏蔽
·
光电子学
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）