Nanomaterials
·
2023
·Vol. 13
·期 15
·2153
·
IF 5.3
Hao Cui,Daguang Li,Yu Yang,Yuewu Fu,Yanhui Dong,Jing Yin,Weiping Qin,Zhixu Jia,Dan Zhao
Polymer-based waveguide amplifiers are essential components in integrated optical systems, as their gain bandwidths directly determine the operating wavelength of optical circuits. However, development of the wideband gain media has been challenging, making it difficult to fabricate devices with broadband amplification capability. Rare earth ion-doped nanoparticles (NPs) are a key component in the gain media, and their full width at half maximum (FWHM) of the emission peak decides the final gain bandwidth of the gain media. Here, KMnF3: Yb, Er, Ce@KMnF3: Yb NPs with the broad full width at half maximum (FWHM) of the emission peak covering the S+C band was prepared. The NPs were synthesized using a hydrothermal method, and the FWHM of the emission peak of NPs reached 76 nm under the excitation of a 980 nm laser. The introduction of Ce3+ions and a core-shell structure coating greatly enhanced the emission intensity of NPs at C band. Since KMnF3: Yb, Er, Ce@KMnF3: Yb NPs have exceptional broadband luminescence properties at C band, KMnF3: Yb, Er, Ce@KMnF3: Yb NPs can be the potential gain medium in the future polymer-based waveguide amplifiers.Keywords:KMnF3;nanoparticles;active-shell;core-shell;1.5 μm
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2017
·Vol. 5
·期 16
·3903-3907
·
IF 5.256
Jinbo Zhao,Lili Wu,Chuanjiang Zhang,Bin Zeng,Yingnan Lv,Zhen Li,Qinglong Jiang,Zhanhu Guo
Highly efficient saturation up-conversion (UC) luminescent Y2O3:Er3+ microspheres have been successfully prepared via a hydrothermal-homogeneous precipitation method. Bright visible luminescence can be clearly seen with a 1.55 μm laser diode excitation power as low as ∼0.03 W cm−2. The up-conversion (UC) emission spectra indicate that the strongest red emission with a peak situated at ∼660 nm originated from the 4I9/2 → 4I15/2 transition of Er3+. The peaks situated at ∼520 and 550 nm can be assigned to the transition from 2H11/2/4S3/2 state to the ground state of Er3+. The high efficient saturation up-conversion emission is related to the highly crystalline structure. These results indicate a new way to enhance UC radiation in rare-earth ion-doped materials prepared using a hydrothermal-homogeneous precipitation method.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Laser & Photonics Reviews
·
2024
·Vol. 19
·期 5
·2401522
·
IF 9.8
Huhui Fu,Wenfeng Xie,Yuanqi Qian,Xiao Li,Yaning Zhang,Jingbing Lu,Qi Xiong,Anhua Wu,Liangbi Su,M. Liu
Lanthanide (Ln 3+ )-doped upconversion nanocrystals (NCs) have attracted great attention due to their outstanding luminescent performance and wide applications in various fields. However, the preparation of most Ln 3+ -doped NCs requires rigorous conditions such as high reaction temperature, long reaction time, strict anhydrous and oxygen-free environment, and tedious post-treatment process. Herein, sub-100 nm Yb 3+ /Er 3+ codoped K 3 ZrF 7 octahedral NCs are prepared by an extremely simple coprecipitation method (10 s only at room temperature). The resulting NCs show excellent upconversion luminescence (UCL), significantly superior to both their conventional high-temperature-synthesized counterparts and the room-temperature-synthesized NaBiF 4 :Yb/Er controls. More importantly, abnormal thermally enhanced UCL over a temperature range from room temperature to 473 K is found in these K 3 ZrF 7 :Yb/Er NCs, making them promising candidates for ratiometric thermometry applications. By employing the luminescence intensity ratio between two non-thermally coupled energy levels of Er 3+ , namely 4 F 9/2 and 2 H 11/2 , these NCs display an extraordinarily high absolute sensitivity of 443.2% K −1 and a comparatively large relative sensitivity of 1.55% K −1 at room temperature. These results reveal that K 3 ZrF 7 :Yb/Er NCs can not only be facilely prepared via an ultrafast room-temperature synthesis, but also hold great potential in various areas such as optical temperature sensing and biological applications.
研究领域:
材料科学
·
光学
·
生物医学工程
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 22
·7826-7834
·
IF 4.39
Xiangyu Zhang,Jialing Wu,Peng Wang,Jie Gao,Feng Gao,Dangli Gao
The majority of the fabrication procedures of lanthanide-doped materials involve thermal treatment that often results in crystallite regrowth, stabilizing the specific crystal structure and resulting in luminescence enhancement. The efficiency and intensity of up-conversion luminescence are closely related to the structure and synthesis process of the materials. Herein, well-crystallized and pure tetragonal NaY(MoO4)2 microcrystals with a uniform octahedral shape have been successfully synthesized via an environmentally friendly hydrothermal method, followed by annealing treatment. The phases, structures, morphologies, and compositions of the synthesized products annealed at 500–1000 °C remain unchanged, indicating high thermal stability. Furthermore, the NaY(MoO4)2:Yb3+/Er3+ microcrystals exhibit strong green emission when irradiated using infrared (980 nm) or ultraviolet (378 nm) wavelengths. Upon 980 nm excitation, up to 37-fold luminescence enhancement is achieved when the samples are annealed at about 700 °C. Interestingly, the high colour purity of the strong green emission is not only independent of the dopant concentration and heat treatment temperature, but it is also independent of the excitation conditions, including power and wavelength, and this makes it particularly suitable as a green safety signal light and luminescent security ink in paintings. As-prepared safety inks with NaY(MoO4)2:Yb3+/Er3+ microcrystals were used for visual fingerprint recognition printed on A4 paper with three-level fingerprint security features, significantly increasing the difficulty of illegal imitation and enhancing the levels of anti-counterfeiting.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
OPTICAL MATERIALS
·
2021
·
IF 3.08
Huilian Qin,Jing Li,Meijuan Yuan,Yaru Peng,Yuxin Huang,Li Chen
Monodisperse sub-10 nm Sc 2 O 3 : Yb, Er upconverting nanoparticles (UCNPs) were firstly synthesized via solvothermal method in three-neck round-bottom flask. The X-ray diffraction (XRD) shows that the prepared UCNPs possess cubic structure. The transmission electron microscopy (TEM) shows that sample has monodisperse spheroid morphology with high crystallinity . The average size of spheroid UCNPs could be controllable manipulated as small as 3 nm. Furthermore, the sample exhibits stronger red and green upconversion luminescence (UCL) than reported Sc 2 O 3 : Yb, Er nanostructure by biphasic solvothermal method. The Fourier-transform infrared (FTIR) spectra and decay curve reveal that ultra-small Sc 2 O 3 : Yb, Er UCNPs exhibit the reduced surface groups and long decay time of Er 3+ ions. The results indicate Sc 2 O 3 : Yb, Er UCNPs is a probable oxide material with small size and intense UCL for biological applications.
研究领域:
材料科学
·
光学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2012
·
IF 2.023
Zhengwen Yang,Jialun Zhu,Dong Yan,Hangjun Wu,Rongfei Wang,Zhiguo Song,Xue Yu,Yong Yang,Dacheng Zhou,Zhaoyi Yin,Jianbei Qiu
Upconversion inverse opal photonic crystals based on a luminescent matrix of Yb, Er co-doped Y 2 Ti 2 O 7 were synthesized, and their photoluminescence was investigated. By comparing the spectra of the inverse opals with that of the reference sample, the contribution of photonic band gap effect to the upconversion emission was observed in the Y 2 Ti 2 O 7 : Yb, Er inverse opals. Intensity of the green or red upconversion emission from Er 3+ was depressed when the overlapping between the photonic band-gap and Er 3+ ions emission band occurs.
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 LUMINESCENCE
·
2019
·
IF 2.961
Han Xia,Lei Lei,Jienan Xia,Youjie Hua,Degang Deng,Shiqing Xu
Non-contact optical thermometry based on fluorescence intensity ratio (FIR) technique has been widely researched over the past few decades. However, the reported systems exhibit two important shortcomings including the existence of a few interferential signals in addition to the required spectral bands for FIR and the absence of internal standard for reference signal. Herein, only two emission bands of Er 3+ : 4 F 9/2 → 4 I 15/2 (~673 nm) and Tm 3+ : 3 H 4 → 3 H 6 (~800 nm) are achieved in Yb/Er/Tm tri-doped Na 3 ZrF 7 nano-system. Moreover, the upconversion (UC) emission intensity of Er 3+ keeps unchanged with the rising of temperature, which is applied as reference signal; while that of Tm 3+ enhances evidently, which is applied as temperature signal. The calculated maximum absolute temperature sensitivity (S a ) and relative temperature sensitivity (S r ) are 0.17 K −1 at 393 K and 1.76% K −1 at 313 K, respectively.
研究领域:
材料科学
·
纳米技术
·
光学
·
温度传感
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2024
·
IF 5.2
Zhigang Gao,Lugui Cui,Yushi Chu,Luyue Niu,Jing Xiao,Jing Ren
In this work, rare earth ions (REs) including Yb 3+ /Er 3+ , Yb 3+ /Ho 3+ and Yb 3+ /Tm 3+ co-doped manganese oxyfluoride glasses were fabricated using melt quenching method. By fully utilizing the upconversion luminescence (UCL) of REs and regulating energy transfer between the different energy levels of RE ions and the 4 T 1 level of Mn 2+ , the output of UCL was regulated and even pure-red light can be achieved. Moreover, owing to the selective partitioning caused by phase-separation network structure in the oxyfluoride glass, the UCL intensity of glasses annealed for 72 h is significantly enhanced 58 times compared to the rapidly quenched samples.
研究领域:
材料科学
·
光学
·
光子学
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2018
·Vol. 143
·期 17
·4199-4205
·
IF 3.864
Jinzha Zhang,Yang Shen,Yuhong Liu,Zaiying Hou,Yuanqing Gu,Wenbo Zhao
A novel electrochemiluminescence (ECL) cytosensor was proposed for the quantitative detection of HeLa cells (human cervical cancer cells) with the help of a signal amplification strategy. Firstly, the Au-NaYF4:Yb,Er nanocomposites were prepared by a simple in situ hydrothermal method and characterized by transmission electron microscopy (TEM) images, X-ray diffraction (XRD) patterns, UV-vis spectra and Fourier transform infrared (FTIR) spectra. Compared with the bare NaYF4:Yb,Er nanocomposites, the ECL intensity of Au-NaYF4:Yb,Er nanocomposites was greatly enhanced by about 4.2-fold which can be attributed to the good conductivity of gold nanoparticles (Au NPs). The nanocomposites showed high and stable ECL emission, fast response and superior conductivity, all of which were advantageous to the ECL detection. Furthermore, HeLa cells were immobilized on the modified electrode via the interaction between folic acid and a folate receptor present on the cell surface. The ECL cytosensor showed satisfactory sensitive response to HeLa cells in a linear range of 4.25 × 102–4.25 × 105 cells per mL with a low detection limit of 326 cells per mL. The proposed cytosensor had good sensitivity and stability, which can offer a great potential platform for bioassay analysis.
研究领域:
分析化学
·
生物传感器
·
纳米技术
·
癌症研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-10
·
IF 15.7
Zhang Wen,Zheng Wei,Huang Ping,Yang Dengfeng,Shao Zhiqing,Zhang Wei,Zhang Hao,Xie Zhi,Xu Jin,Chen Xueyuan
Yb 3+ /Er 3+ activated upconversion (UC) materials have been widely applied in many advanced technologies owing to their high UC efficiency in the visible region. However, it is challenging to achieve efficient ultraviolet (UV) UC luminescence (UCL) in Yb 3+ /Er 3+ system, due to the dense energy levels of Er 3+ that impose deleterious nonradiative relaxation. Herein, we report a strategy to liberate the UV-UCL of Er 3+ based on the confined energy transfer in Yb 3+ /Er 3+ co-doped 0D Rb 3 InCl 6 with a low phonon energy and a large interionic distance. This facilitates the population of Er 3+ at the 4 G 11/2 state, which yields intense upconverted UV emission at 384 nm, with a much higher UV-to-green ratio ( I 384 / I 554 = 0.864) than that of traditional UC materials ( < 0.1). By leveraging the intense upconverted UV emission of Er 3+ , we demonstrate the application of Rb 3 InCl 6 :Yb 3+ /Er 3+ nanocrystals as a NIR-to-UV transducer for NIR-triggered anion exchange of CsPbX 3 perovskite nanocrystals with high efficiency and good controllability. These findings offer an approach for the exploration of novel UC materials via energy transfer and crystal lattice engineering towards versatile applications.
研究领域:
材料科学
·
光学材料
·
光子学
·
纳米技术
·
固体物理
·
稀土材料
·
能量传递
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）