Physica Status Solidi-Rapid Research Letters
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2021
·Vol. 16
·期 2
·2100517
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IF 2.821
Feng Zhao,Qingfeng Bian,Yunting Chu,Yi Zhang,Qianyun Zhao,Jingchang Sun,Chengren Li
To date, it is still a challenging topic to achieve a wide tunable emission from the same sample under the excitation of a single pump source. Herein, a new sort of nanophosphor NaYO 2 :Er 3+ /Yb 3+ is prepared and characterized. In particular, the wide tunable range crossing red–yellow–green–white regions can be realized only by modulating the power density of the 980 nm semiconductor laser. The mechanism of emitting white light is discussed, and two formulae for quantitatively defining the fluorescent material's tuning ability are also offered. At the same time, the nanophosphor on hand possesses a high degree of reversibility. The nanophosphor presents comprehensive application prospects in information security, anticounterfeiting, display, and other fields.
研究领域:
材料科学
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光学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2014
·Vol. 3
·期 2
·382-389
·
IF 0
Yike Fu,Siyu Gong,Xiaofeng Liu,Gang Xu,Zhaohui Ren,Xiang Li,Gaorong Han
Ferroelectric oxides with excellent electrical, mechanical and optical multifunctions play a vital role in future microdevices with diverse applications in energy, sensors and actuators. A series of Er doped PbZr0.52Ti0.48O3 (PZT:Er3+) nanofibers with tunable upconversion photoluminescence (PL) properties were successfully synthesized via a sol–gel based electrospinning process. By controlled crystallization, PZT:Er3+ nanofibers evolve from a polycrystalline to a single-crystalline-like structure, resulting in a remarkable increase in the visible upconversion emission intensity. It was uncovered that Er3+ doping site in PZT shifts from B site to A site with increase in crystallinity and crystal size. In addition, remarkable enhancement in red emission is observed with increased Er3+ doping concentration, which facilitates the modulation of emission colour from green to orange. Combined with the excellent ferroelectric properties of PZT, such spectral tunable PZT:Er3+ nanofibers are considered as a promising multifunctional candidate for integrated electro-mechano-optical devices.
研究领域:
材料科学
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光学
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纳米技术
✓ 已验证
DOI
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Qingsong Luo,Yan Chen,Changhao Feng,Shuang Gao,Tianyu Lan,Qiyuan Fu,Runduo Teng
For applications in environmental protection, industrial production, and personal health monitoring by breath exhalation, the sensitive and selective detection of n-butanol is of extreme importance. An n-butanol gas sensor has been developed utilizing LaFeO 3 nanofibers doped with Er 3+ by an electrospinning technique. Compared to the pure sample, the gas sensor shows an improved response of 58.97 to 30 ppm n-butanol, which was boosted by 5.99-fold due to the smaller average grain sizes (21.2 nm), porosity of the nanofiber, and abundant chemical-absorbed oxygen species (38.5%) at an Er doping level of 3 at%. It has excellent selectivity to n-butanol, a fast response/recovery time (17 s/27 s), superior stability during 30 days, and a low detection limit (100 ppb), which indicates that Er-doped LaFeO 3 nanofibers have excellent sensing capabilities for real-time n-butanol detection.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
·
2021
·Vol. 78
·期 9
·796-802
·
IF 0.649
Wang Yunfeng,Chen Jun,Wei Xiaoyu,Cui Shaobo,Jia Xiao
Rare-earth-doped upconverison luminescent (UCL) materials have wide application prospects in the field of nanoptoelectronics technology. However, achieving highly efficient UCL materials is still a big challenge due to the serious nonradiative energy loss in the host materials. In this research, Gd 2 (WO 4 ) 3 : Yb 3+ , Er 3+ inverse opal photonic crystals (IOPCs) were prepared using a polymethylmethacrylate (PMMA) template-assisted method, and the effects of modulations of the IOPC structure on UC emission properties of Er 3+ were investigated systemically. As a result, the emission intensity of 2 H 11/2 - 4 I 15/2 in IOPC was found to be suppressed 37.4%, and the radiative lifetimes of 4 S 3/2 - 4 I 15/2 were prolonged 1.55 times. The effects of the doping concentration on the reciprocal of fluorescence lifetimes of 4 S 3/2 - 4 I 15/2 between the IOPC and the reference (REF) samples showed that the cross-energy transfer (CET) rate and the electronic transition rate were greatly inhibited, which could be due to the effect of the modulation of the effective index on the radiative transition rate and on the decrease of nonradiative transition rate caused by periodic thin-walled structure of IOPC. The power-dependent UC emission properties validated the supposition that the IOPC structure could be effectively suppressed the local thermal effect and thermal quenching. This research presents a further step in the exploration of the new kind of UCL materials with high luminous efficiency.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2023
·
IF 2.1
Xinzhu Gan,Bin Tian,Zhigang Wang,Yong Xu,Ling Li,Lin Wang,Chonghe Xu
This study aimed to prepare YAlO 3 fibers doped with 2 mol% Er 3+ using electrospinning and a carbon-free sol system as the precursor. X-ray diffraction, thermal gravimetry and differential thermal analysis, and Fourier transform infrared were employed to characterize the thermal behavior and crystallization process of the precursor fibers. Scanning electron microscope analysis showed that the Er 3+ :YAlO 3 fibers had a uniform diameter of 1 μm, a dense and crack-free surface, and a non-porous cross-section. Upon excitation at 450 and 488 nm, upconverted luminescence spectra were obtained from the Er 3+ :YAlO 3 fibers. This observation indicates their potential as upconversion luminescent agents capable of converting visible light into ultraviolet light. These properties make the Er 3+ :YAlO 3 fibers promising candidates for various upconversion luminescence applications.
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 RARE EARTHS
·
2024
·
IF 5.2
Deyuan Yang,Ruirui Cui,Chaoyong Deng
Optical thermometry has attracted great attention because it enables accurate temperature measurement in harsh environments due to non-contact temperature measurement. Three-dimensional (3D) lead-free halide perovskites have a great application potential in this field, due to its outstanding luminous properties and stability. In this work, the Sb 3+ and Er 3+ are introduced in Cs 2 NaYCl 6 double perovskites (DPs). The Sb 3+ doping Cs 2 NaYCl 6 DPs exhibits bright blue emission from the Sb 3+ activated self-trapped excitons (STEs) and Sb 3+ ,Er 3+ co-doped Cs 2 NaYCl 6 has efficient green emission with excellent photoluminescence quantum yields (PLQY) of 81.1% because of the presence of energy transfer from self-trapped excitons to Er 3+ ions. Excitingly, the ratio between the fluorescence intensity at 524 nm and 550 nm (FIR( I 524 nm / I 550 nm )) and the ratio between the fluorescence intensity at 524 and 456 nm (FIR( I 524 nm / I 456 nm )) both have a high correlation with temperature in the range of 298–473 K. The maximum of relative sensitivity values reach to 1.18%/K ( I 524 nm / I 550 nm ) and 1.19%/K ( I 524 nm / I 456 nm ) at 298 K, respectively. The outstanding temperature sensitivity suggests that the Sb 3+ ,Er 3+ co-doped Cs 2 NaYCl 6 has enormous application potential in ratiometric optical thermometry.
研究领域:
材料科学
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Wanli Zhang,Meigui Ou,Chunlin Yang
In this paper, erbium-doped gadolinium oxide rare earth oxide nanoparticles (Gd 2 O 3 :Er 3+ ) with good light absorption capacity from the visible to the infrared region were prepared by polyol method, and then compounded with TiO 2 by hydrothermal method. SEM, TEM, XPS, UV–vis and electrochemical workstation were used to study the morphology, structure, UV–vis light absorption and photoelectrochemical (PEC) properties of Gd 2 O 3 :Er 3+ /TiO 2 . The results showed that the Gd 2 O 3 :Er 3+ spherical nanoparticles with a particle size of about 15 nm were uniformly distributed on the surface of the TiO 2 nanorod array, and the Gd 2 O 3 :Er 3+ /TiO 2 nanocomposites had good light absorption capacity in the infrared region. Furthermore, the photocurrent densities of Gd 2 O 3 /TiO 2 and Gd 2 O 3 :Er 3+ /TiO 2 were 2.08 and 2.75 times higher than those of TiO 2 , respectively, manifesting that the broadening of infrared light absorption can improve the PEC property of TiO 2 . Meanwhile, the DFT calculation results showed that the energy band of Gd 2 O 3 :Er 3+ /TiO 2 was significantly narrower than that of TiO 2 , indicating that Gd 2 O 3 :Er 3+ /TiO 2 had a redshift phenomenon of UV–vis absorption. The calculation results of state density showed that the f orbital of Gd 2 O 3 :Er 3+ intersected with the d orbital of TiO 2 , indicating that there is an electron transfer between Gd 2 O 3 :Er 3+ and TiO 2 .
研究领域:
材料科学
·
光催化
·
理论计算
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Mengqiu Guan,Wenhan Han,Kailei Lu,Yuhong Xie,Zijie Li,Yucheng Ye,Guixin Wang,Jianqi Qi,Tiecheng Lu
In response to the urgent demand for windows with multi-mode self-calibrated temperature feedback operating over a wide range in extreme environments, herein, Pr 3+ –Er 3+ co-doped Y 2 Zr 2 O 7 (YZO) transparent ceramics were developed. After annealing treatment to remove defects, these ceramics exhibit high transparency and temperature-dependent wide-range photoluminescence, in which the in-line transmittance is up to 77.8% at 760 nm (theoretical limit is 78%), and the luminescence band spans blue to red. Furthermore, based on the luminescence intensity ratio technology, a multi-mode temperature sensing window using highly transparent YZO:Pr/Er ceramics was designed. The developed photothermal window shows relatively high sensitivity, in which absolute sensitivity ( S a ) and relative sensitivity ( S r ) reached 0.0105 K −1 at 363 K and 1.295% K −1 at 301 K, respectively. The developed thermometer could provide a reference for self-calibrated thermometer window, and its wide spectral operating range ensures the reliability of temperature measurement, which has the potential to be used in some extreme conditions.
研究领域:
材料科学
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光学工程
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 33
·期 2
·596-606
·
IF 2.478
Hu Haisheng,Jiang Qun,Li Yunfei,Liu Meitang
The K + -doped (Na 1− x K x )GdF 4 :Er 3+ ,Yb 3+ upconversion materials were successfully synthesized by solvothermal method. The doping of K + was testified to have great influences on improving upconversion properties as it directly affects the morphology of the material matrix. In addition, by coating the doped material with a homogeneous shell layer, a newly developed core–shell (Na 0.9 K 0.1 )GdF 4 :Er 3+ ,Yb 3+ @NaGdF 4 nanomaterials were produced. Surprisingly, its light emission intensity was 2 times of that for the uncoated material, although the crystal structure and the emission color of the nanoparticles did not change. The upconversion mechanism has also been studied, and the results show that there is a two-photon mechanism of (Na 1− x K x )GdF 4 :Er 3+ ,Yb 3+ . The work provides a new strategy for enhancing the luminescence density of upconversion materials by coating a homogeneous shell after doping.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
KEY ENGINEERING MATERIALS
·
2013
·
IF 0
Meng Wang,Ming Hao Fang,Chao Tang,Zhao Hui Huang,Yang Ai Liu,Xiao Wen Wu
Er3+ doped ZnO-TiO2 nanofibers with diameter of 100～200 nm were prepared by electrospinning mothed after calcined at high temperature, using polyvinylpyrrolidone(PVP), Zn(NO3)2·6H2O, Er(NO3)3·5H2O, Ti(OC4H9)4 as raw materials. The composite nanofibers were characterized by XRD, SEM, and UV-V respectively. Effects of different calcined temperatures on structure and photocatalytic degradation were investigated. The results indicated that the crystallinity becomes better with the increasing of calcination temperature. The composite nanofibers had the best effects of photocatalytic degradation of methylene blue, when Er3+ doping content was 0.3 wt.% and calcined temperature was 500 °C.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Yanyang Li,Huimin Du,Yue Ma,Meifang Liu,Jian Zou,Shentang Wang,Jun Yang,Shanshan Hu,Jun Lin
The existence of energy transfer channels from the self-trapped exciton (STE) emission to lanthanide (Ln3+) ions in double perovskites (DPs) opens up new possibilities for high security anti-counterfeiting applications. In the present investigation, we synthesized Sb3+/Ho3+/Er3+ doped Cs2NaGdCl6 rare-earth-based DPs using a simple solvothermal method, whose luminescence could be quenched by water and restored after drying. The efficient down-shifting (DS) red emission from the 4f–4f transition of Ho3+ was enhanced 8-fold due to the energy transfer of STEs → Ho3+ ions via Sb3+ sensitization. The DS and up-conversion (UC) dual-mode multicolor emissions were obtained by further introducing Er3+. Specifically, the DS luminescence of the tri-doped sample under the UV region and that under 448 nm irradiation were white and red, respectively; and the UC luminescence under 980 nm irradiation was green. In view of their stimulus response to water and dual-mode multicolor luminescence properties, advanced anti-counterfeiting materials based on the obtained samples were designed.
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 PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2020
·
IF 3.306
Shuguang Li,Zhiyu Liu,Chunxiao Lu,Zhihui Qu,Congcong Piao,Jianhe Tang,Dawei Fang,Jun Wang
The use of co-catalysts can observably enhance photocatalytic hydrogen production activity. In this work, a novel visible-light driven photocatalyst, (MoSe 2 -RGO)/(Er 3+ :Y 3 Al 5 O 12 /ZnS)/RuO 2 nanocomposite, is prepared for the first time by loading Er 3+ :Y 3 Al 5 O 12 , MoSe 2 -RGO and RuO 2 on the surface of ZnS nanoparticles. Er 3+ :Y 3 Al 5 O 12 as an effective visible-to-ultraviolet up-conversion luminescence agent can provide the ultraviolet-light to activate wide band-gap ZnS. MoSe 2 -RGO and RuO 2 , acting as conduction band co-catalyst and valence band co-catalyst, respectively, can effectively separate the photo-generated carriers and supply more reactive sites. The activities of the photocatalysts were assessed via photocatalytic hydrogen production in Na 2 S and Na 2 SO 3 aqueous solution under 300 W xenon lamp irradiation. In addition, the visible-light irradiation time and used times of the prepared samples as influence factors on the photocatalytic hydrogen production were also investigated. It was easily found that the prepared (MoSe 2 -RGO)/(Er 3+ :Y 3 Al 5 O 12 /ZnS)/RuO 2 nanocomposite shows fairly high activity in photocatalytic hydrogen production, compared with single ZnS photocatalyst. It was mainly attributed to the excellent up-conversion luminescence property of Er 3+ :Y 3 Al 5 O 12 and the efficient separation of photo-generated electrons and holes caused by MoSe 2 -RGO and RuO 2 . This research may pave an effective way for photocatalytic hydrogen production utilizing solar light.
研究领域:
材料科学
·
能源化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）