CERAMICS INTERNATIONAL
·
2024
·Vol. 51
·期 14
·18384-18391
·
IF 5.1
Fangliang Shen,Bingheng Sun,Tao Feng,Conghui Huang,Yin Hang,Benxue Jiang,Long Zhang,Jintai Fan
This work aims to fabricate the Yb:LuScO 3 sesquioxides transparent ceramics for use in ultrafast and ultrashort laser technology. 1 at.% Yb:LuScO 3 nanopowders were fabricated using the glycine-nitrate process. ZrO(NO 3 ) 2 was selected as the precursor of ZrO 2 which functions as a sintering aid. Yb:LuScO 3 transparent ceramics with different ZrO 2 content were fabricated by vacuum sintering at 1780 °C and HIPing at 1650 °C, among which the ceramic with 7 at.% ZrO 2 showed the highest transmittance, reaching 81 % at 2000 nm. The ceramic achieved a maximum output power of 1.5 W at 1038 nm with a slope efficiency of 34.8 % and tunable wavelength range exceeding 22 nm. The results demonstrated that Yb:LuScO 3 transparent ceramics can be considered as promising materials in 1 μm solid-state laser applications.
研究领域:
材料科学
·
光学工程
·
固体激光技术
·
无机非金属材料
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先进陶瓷
✓ 已验证
DOI
高影响因子
Solar RRL
·
2017
·Vol. 1
·期 10
·1700084
·
IF 0
Yuehui Lu,Zhicheng Chen,Ling Ai,Xianpeng Zhang,Jing Zhang,Jia Li,Weiyan Wang,Ruiqin Tan,Ning Dai,Weijie Song
Photovoltaic (PV) modules are not only an opto-electrical system, but also opto-thermal one, where the optical, electrical, and thermodynamic domains are strongly coupled. The means to suppress both light and heat losses in PV modules remains undeveloped. Herein, a universal route to realize both radiative cooling and light management via the ultra-broadband versatile textures is proposed, originating from the interaction with the visible, near-infrared, and mid-infrared electromagnetic waves (EMWs) via geometric, diffractive, and subwavelength optical effects. The sol–gel imprinted ultra-broadband textures exhibited a near-unity infrared emissivity over 0.96 at the atmospheric window between 8 to 13 μm for radiative cooling, and a solar transmittance and haze above 0.94 and 0.95 at the wavelengths from 350 to 750 nm, respectively, for light management. Applying the ultra-broadband textures imprinted glass to silicon PV modules as an encapsulant cover, the short-circuit current and conversion efficiency were increased by 5.12 and 3.13% in relative terms, respectively. The fabrication of such ultra-broadband versatile textures was photolithography-free, scalable, and PV industry compatible, which provided a cost-effective, long-term durable, and energy-efficient means to both light and thermal management through ultra-broadband matter-EMW interaction not only in PV modules, but also various opto-electro-thermal devices.
研究领域:
光学工程
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材料科学
·
能源科学
·
光伏技术
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热力学
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纳米制造
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电磁波与物质相互作用
✓ 已验证
DOI
OPTICAL MATERIALS
·
2023
·
IF 3.9
Yibo Zhang,Shen Wang,Biao Liu,Yan Hao
MgAl 2 O 4 :Cr 3+ transparent ceramics were prepared by a hot-pressed sintering process with Y 2 O 3 and La 2 O 3 as sintering aids, and the effects on the microstructure, densification, optical transmission, and photoluminescent properties were investigated. The sintering aids of Y 2 O 3 and La 2 O 3 enhanced the relative density, reaching 99.33% with 2.4 wt% Y 2 O 3 and 99.24% with 0.8 wt% La 2 O 3 . La 2 O 3 also inhibited abnormal grain growth and obtained ceramics with uniform grain size. In addition, the optical transmission was also improved with Y 2 O 3 and La 2 O 3 as sintering aids. The transmission of the ceramic with 2.4 wt% Y 2 O 3 exceeded 78% in the region of 700–6000 nm and reached 83% at 1450 nm. Moreover, Y 2 O 3 and La 2 O 3 both contributed to improving the quantum yield of the ceramics, especially for Y 2 O 3 , and the quantum yield was about 0.354, which was approximately two times higher than that without R 2 O 3 . In summary, La 2 O 3 was helpful for improving sintering process, inhibiting grain growth, and homogenizing the grain size, while Y 2 O 3 was significant for enhancing the optical and photoluminescent properties.
研究领域:
材料科学
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无机非金属材料
·
功能陶瓷
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光电子学
·
固态发光材料
✓ 已验证
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 14
·8039-8047
·
IF 3.049
Peng Gu,Xinghua Zhu,Dingyu Yang
Mn-doped ZnO (MZO) films were prepared on glass substrates using sol–gel dip-coating technology. The microstructural, morphological, optical and photoelectric properties of MZO films were investigated at different withdrawal speeds (WS: 20, 40, 60 and 80 mm s−1). The X-ray diffraction (XRD) patterns showed that all the films obtained were polycrystalline with a hexagonal structure, and the highest crystallinity of MZO films was observed as films were deposited at 40 mm s−1. The UV-Vis spectra revealed that the average optical transmittance of all samples was over 60% and the energy band gap of films decreased from 3.616 to 3.254 eV with the increase in withdrawal speed. The formed Au/MZO/Au photodetectors (PDs) indicate that a device prepared at 40 mm s−1 shows superior properties both in response speed and detection capability, and the rise time is 1.871 s and fall time is 3.309 s at 365 nm for 3 V bias and the detectivity (D*) reaches ∼1.7 × 1010 Jones. Moreover, the responsivity of PDs is also affected by the distance between Au electrodes and external bias. This research provides a simple way to fabricate the UV PDs based on MZO films with faster response and higher detectivity.
研究领域:
材料科学
·
半导体物理
·
光电子学
·
薄膜技术
·
纳米材料
✓ 已验证
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2021
·
IF 3.599
Yanting Zhu,Chenxia Li,Degang Deng,Hua Yu,Hao Li,Le Wang,Changyu Shen,Xufeng Jing,Shiqing Xu
A series of Eu 2+ /Cr 3+ co-doped BaAl 12 O 19 phosphor was synthesized by traditional high temperature solid stated method, and the temperature-sensitive characteristic of the phosphor was researched. Due to the temperature sensitivity of the fluorescence lifetime of Cr 3+ , the thermometry based on fluorescence lifetime can be realized. Furthermore, the emissions of Eu 2+ ion and Cr 3+ ion can be well separated, which shows the excellent signal recognition ability of this phosphor. The Eu 2+ /Cr 3+ co-doped BaAl 12 O 19 phosphor can be used for the thermometry based on fluorescence intensity ratio. A dual-mode optical thermometry is proposed and researched in the temperature range of 293–563 K by using the decay lifetime of Cr 3+ emission and in the temperature range of 295–476 K by using the fluorescence intensity ratio of Eu 2+ to Cr 3+ as temperature readout. The maximum values of relative sensitivity are 0.466% K −1 at 363 K and 0.259% K −1 at 476 K. The Eu 2+ /Cr 3+ co-doped BaAl 12 O 19 phosphor has excellent optical temperature characteristic , and its dual-mode thermometry characteristics provide convenience for the application of this material. This phosphor has potential application prospects in the field of optical thermometry.
研究领域:
材料科学
·
光学工程
·
无机化学
·
传感器技术
·
功能材料
✓ 已验证
DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2019
·
IF 1.337
Zhen Xiao,Jiawei Zhang,Jing Zhu,Hui Xu,Huanping Wang,Shiqing Xu,Yang Xia
Ho 3+ /Yb 3+ co-doped PbTiO 3 nanocrystals with different content of dopant were successfully prepared via a facile hydrothermal method. The purity, morphology, element distribution, chemical state and up-conversion (UC) photoluminescence (PL) of PbTiO 3 nanocrystals affected by Ho 3+ dopant are investigated systematically. X-ray diffraction (XRD) results illustrate that PbTiO 3 samples with the doping Ho 3+ concentration ranging from 0 to 5 mol-% are perovskite structure. The doping Ho 3+ ions have no change on the crystal structure of perovskite PbTiO 3 . Owing to the non-equivalent substitution of Ho 3+ to Ti 4+ in PbTiO 3 , the particle size of Ho 3+ /Yb 3+ co-doped PbTiO 3 samples is decreased as well as the particle agglomeration is detected. Moreover, Ho and Yb ions have uniform distributions in the PbTiO 3 nanoparticles as the presence of Ho 3+ and Yb 3+ cations. The up-conversion spectra demonstrate that Ho/Yb co-doped PbTiO 3 samples have up-conversion emissions centered at 550 nm, 660 nm and 755 nm, corresponding to the transitions of 5 F 4 ( 5 S 2 )→ 5 I 8 , 5 F 5 → 5 I 8 and 5 S 2 ( 5 F 4 )→ 5 I 7 of Ho 3+ ions. Additionally, the effect of temperature on the UC PL property of Ho 3+ /Yb 3+ co-doped PbTiO 3 system is further investigated. The sensitivity and the trend of Ho 3+ /Yb 3+ co-doped PbTiO 3 samples in temperature from 298 k to 493K are calculated on the basis of fluorescence intensity ratio (FIR) method. Ho 3+ /Yb 3+ co-doped PbTiO 3 nanocrystals are verified the high potential in the optical temperature sensing.
研究领域:
材料科学
·
无机化学
·
纳米材料
·
光子学
·
功能材料
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2020
·Vol. 8
·期 22
·2001037
·
IF 8.286
Dongjie Liu,Xiaohan Yun,Guogang Li,Peipei Dang,Maxim S. Molokeev,Hongzhou Lian,Mengmeng Shang,Jun Lin
Highly efficient cyan-emitting phosphor materials are indispensable for closing the cyan gap in spectra of the traditional phosphor-converted white light-emitting diodes (WLEDs) to achieve high-quality full-spectrum white lighting. In this work, bright cyan-emitting Ca 3 Ga 4 O 9 (CGO):0.02Bi 3+ ,0.07Zn 2+ phosphor is developed to bridge the cyan gap. Such a Bi 3+ ,Zn 2+ codoping enhances the cyan emission of CGO:0.02Bi 3+ by 4.1 times due to the influence of morphology and size of phosphor particles, charge compensation and lattice distortion. Interestingly, codoping La 3+ ions into the current system can achieve a photoluminescence tuning of CGO:0.02Bi 3+ from cyan to yellowish-green by crystallographic site engineering. Besides, Bi 3+ –Eu 3+ energy transfer is successfully realized in CGO:0.02Bi 3+ ,0.07Zn 2+ , n Eu 3+ phosphors and the emission color tuning from cyan to orange is observed. The investigation of thermal quenching behaviors reveals that the incorporation of Zn 2+ and La 3+ improves the thermal stability of CGO:0.02Bi 3+ . Finally, CGO:0.02Bi 3+ ,0.07Zn 2+ ,0.10Eu 3+ phosphor is employed to obtain a single-phased warm WLED device. A full-spectrum WLED device with remarkable color rendering index (Ra) of 97.4 and high luminous efficiency of 69.72 lm W −1 is generated by utilizing CGO:0.02Bi 3+ ,0.07Zn 2+ phosphor. This result suggests the important effect of CGO:0.02Bi 3+ ,0.07Zn 2+ phosphor on closing the cyan gap, providing new insights of cyan-emitting phosphors applied in full-spectrum white lighting.
研究领域:
材料科学
·
光学工程
·
固体物理
·
无机化学
·
光电子学
·
照明技术
✓ 已验证
DOI
高影响因子
Materials Today Chemistry
·
2022
·
IF 7.613
J. Du,S. Lyu,K. Jiang,D. Huang,J. Li,R. Van Deun,D. Poelman,H. Lin
Persistent luminescent materials containing deep-level traps have attracted extensive research interest in the field of optical information storage due to their unique features of long-lasting emission, energy storage, and controllable photon release upon external stimulations. However, the lack of suitable luminescent materials with deep-level traps is still the bottleneck of such an optical storage application. Herein, we report a series of persistent luminescent materials with reddish-orange emissions and controllable photon release upon thermal stimulation. Through substitution of Sn by Si, more and deeper trap levels are achieved in Sr 2 SnO 4 :Sm 3+ ,Si 4+ phosphors. Moreover, both ultraviolet light and high-energy X-ray irradiations can induce reddish-orange emitting persistent luminescence from the as-synthesized samples. Rewritable optical information storage and readout based on photon trapping and de-trapping processes are demonstrated. Optical information can be handily encoded using a commercially available 365 nm light-emitting diode, and decoded upon thermal stimulation. The Sr 2 SnO 4 :Sm 3+ ,Si 4+ phosphors as presented in this work show a great promise for rewritable optical data storage and information encryption.
研究领域:
材料科学
·
光功能材料
·
固态化学
·
信息存储技术
·
发光物理
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2017
·Vol. 33
·期 8
·850-855
·
IF 2.764
Nannan Bi,Lei Zhang,Qiang Zheng,Fei Zhuge,Jiupeng Li,Xuan P.A. Gao,Juan Du
A vapor deposition method was applied to synthesize zinc oxide (ZnO) nanowires and nanorods with diameter from 40 nm to 500 nm, length from 1 μm to 70 μm by adjusting the flow rate of argon, oxygen and the pressure during growth. Results of scanning electron microscopy (SEM) and high resolution transmission electron microscopy (TEM) proved the hexagonal wurtzite structure of the synthesized ZnO nanowires or nanorods , which grow along the <0001> direction. The results show that the growth conditions strongly impact the morphology, growth rate and optical properties of the ZnO nanostructures . The ZnO nanowires with small diameters tend to show stronger ultraviolet (UV) light emission from the electron-hole recombination near band edge in photoluminescence (PL), while those with larger diameters tend to exhibit PL spectra dominated by the broad green light emission due to the defects.
研究领域:
材料科学
·
纳米技术
·
半导体物理
·
光电子学
·
功能材料
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2019
·
IF 2.687
Feng Zhang,Xiantao Jiang,Zhiliang He,Weiyuan Liang,Shixiang Xu,Han Zhang
Antimonene (Sb), a novel 2D crystalline, has recently received intense attention from optoelectronic communities, due to its enticing physical and chemical properties. Here we systematically investigate the broadband third-order nonlinear optical properties and carrier dynamics in antimonene. Efficient saturable absorption effect was observed at different wavelengths, indicating the use for broadband ultrafast laser generation. The nonlinear refractive indexes were characterized to be (2.55 ± 0.23) × 10 −14 cm 2 /W and (7.88 ± 0.37) × 10 −15 cm 2 /W at 800 nm and 1500 nm, respectively. Photoinduced carrier dynamics are investigated by a non-degenerate transient absorption spectrometer. Fast recovery processes were observed in antimonene and suggesting a high optical modulation speed to 500 GHz.
研究领域:
光学材料
·
凝聚态物理
·
纳米光子学
·
非线性光学
·
超快光谱学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xibao Zhang,Yonghui Xu,Xiudi Wu,Shuwen Yin,Chuansheng Zhong,Chenxue Wang,Liang Zhou,Hongpeng You
A series of novel Bi 3+ /Ln 3+ -activated Ca 2 ScSbO 6 (CSSO) phosphors were synthesized by solid-state method and their luminescent behaviors were investigated in detail. Under the 302 nm excitation, the CSSO:Bi 3+ shows remarkable near-ultraviolet photoluminescence with a peak emission at 365 nm. Eu 3+ -activated CSSO phosphor possesses high efficiency and no obvious reduction of emission intensity even after replacing Sc with Eu completely, which indicates a low-concentration quenching effect. In addition, its emission intensity at 423 K (I 423K ) still maintains 88 % compared with that of at room temperature (I 298K ), indicating good thermostability. In contrast, the CSSO:Bi 3+ phosphor exhibits a significant reduction in emission intensity, maintaining only 49 % of its luminescence at 423 K (I 423K /I 298K ). By codoping Bi 3+ and Ln 3+ (Ln = Eu, Tb, Dy, Sm), the energy transfer was observed from the Bi 3+ to Ln 3+ ions, endowing the CSSO:Bi 3+ , Ln 3+ phosphors with tunable multicolor emissions. Leveraging the differing thermostabilities of the emission spectra for Bi 3+ and Ln 3+ ions, we designed and assessed a range of sensitive optical thermometers. Among these, the CSSO:Bi 3+ , Eu 3+ phosphors exhibited the best performance, boasting maximum absolute and relative sensitivities of 9.96 % K −1 and 2.002 % K −1 , respectively. Additionally, we displayed the multi-mode anti-counterfeiting function of synthesized phosphors, and a multi-color switching system was designed with the advantages of direct visualization and easy identification of encrypted information. These results indicate that Bi 3+ and Ln 3+ coactivated CSSO phosphor has the potential application for non-contact temperature measurement and anti-counterfeiting.
研究领域:
材料科学
·
光学工程
·
无机化学
·
功能材料
·
传感器技术
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·Vol. 50
·期 6
·9753-9761
·
IF 5.2
Li Li,Haoliang Yang,Yongjie Wang,Faling Ling,Xianju Zhou,Guotao Xiang,Zhongmin Cao,Sha Jiang,Zhiyu Yang,Yongbin Hua
Novel Ca 2 ScNbO 6 (CSNO): Cr 3+ phosphors were synthesized through a solid-phase method. The crystal structures, luminescence performances, and applications were introduced in this work. The optimized doping concentration was found with a Cr 3+ concentration of 0.01 mol. Under the 336 nm excitation, the recorded photoluminescence spectrum in the range of 650–1300 nm indicated that the obtained sample can emit a broad near-infrared emission with a dominant peak of 858 nm while the full width at half maximum (FWHM) was determined to be 191 nm. To gain a deeper comprehension of the luminescent properties, the crystal field strength was investigated as Dq/B = 2.03, and the electron-phonon coupling for parameter S was calculated to be about 2.01. As for the potential application, utilizing the variable temperature decay lifetime technique, the relative sensitivity (S R ) was approximately 1.16% K −1 at 387 K, which can be promised for utilization in optical temperature measurement. On the other hand, a near-infrared phosphor-converted lighting-emitting diode ( Pc -LED) was fabricated for night vision. Eventually, the security ink based on the obtained sample was made for use in the anti-counterfeiting field.
研究领域:
材料科学
·
光学工程
·
无机化学
·
功能材料
·
生物医学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）