ACS Applied Electronic Materials
·
2022
·
IF 4.494
Kai Feng,Bin Lu,Liangbin Hu
Cubic binary transparent (Er1–xYbx)2O3 (x = 0.005 and 0.01) ceramics with a high transmittance of ∼78.1% at 600 nm (∼95.6% of the theoretical transmittance of the Er2O3 single crystal) were successfully fabricated by vacuum sintering. Upon 980 nm laser pumping, the (Er1–xYbx)2O3 ceramics emit characteristic near-infrared downconversion radiation at 1450–1600 nm arising from the 4I13/2 → 4I15/2 transition of Er3+. The upconversion spectra of (Er,Yb)2O3 ceramics present typical red emission at 650–670 nm and green emission at 520–555 nm corresponding to 4F9/2 → 4I15/2 and 2H11/2/4S3/2 → 4I15/2 transitions of Er3+, respectively. A 0.5 at. % Yb3+ dopant dramatically improves the upconversion luminescence intensity by ∼13 times relative to the pure Er2O3 counterpart. The luminescence intensity gradually increases with the rising laser output power, and the upconversion mechanism ascribes to two-phonon processes. The fluorescence lifetimes of the (Er0.995Yb0.005)2O3 ceramic are determined to be ∼19.26 μs for the 540 nm green emission and ∼26.60 μs for the 668 nm red emission. The noncontact optical thermometric ability of the (Er0.995Yb0.005)2O3 ceramic in the temperature range of 298–473 K is assessed using the thermoresponsive fluorescence intensity ratio technique, and the maximum absolute sensitivity is ∼0.0045 K–1.
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
JACS Au
·
2023
·
IF 8
Ping Liang,Yihao Zheng,Fengru Liu,Huaiyu Shao,Chaofan Hu,Bingfu Lei,Xuejie Zhang,Yingliang Liu,Jianle Zhuang,Xingcai Zhang
Carbon dot (CD)-based luminescent materials have attracted great attention in optical anti-counterfeiting due to their excellent photophysical properties in response to ultraviolet-to-visible excitation. Hence, there is an urgent need for the general synthesis of CD-based materials with multimode luminescence properties and high stability; however, their synthesis remains a formidable challenge. Herein, CDs were incorporated into a Yb,Tm-doped YF3 matrix to prepare CDs@YF3:Yb,Tm composites. The YF3 plays a dual role, not only serving as a host for fixing rare earth luminescent centers but also functioning as a rigid matrix to stabilize the triplet state of the CDs. Under the excitation of 365 nm ultraviolet light and 980 nm near-infrared light, CDs@YF3:Yb,Tm exhibited blue fluorescence and green room-temperature phosphorescence of CDs and upconversion luminescence of Tm3+, respectively. Due to the strong protection of the rigid matrix, the stability of CDs@YF3:Yb,Tm is greatly improved. This work provides a general synthesis strategy for achieving multimode luminescence and high stability of CD-based luminescent materials and offers opportunities for their applications in advanced anti-counterfeiting and information encryption.
研究领域:
材料科学
·
光学材料
·
纳米技术
·
防伪技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Han Wang,Caoling Li,Jingwei Zhang,Zhao Yang,Junjun Li,Yu Cao,Kangbing Wu,Zhihong Liu,Junxing Hao,Xiaoxue Ye
Transition metal sulfides have garnered significant interest in the realm of photoelectrochemical (PEC) sensors due to their remarkable optical and electrical properties. However, their intrinsic UV–vis adsorption and electron-donor consumption severely hinder their nonirritating and in situ epidermal PEC applications. Herein, a NIR-808 nm light-excited heterojunction, phosphomolybdic acid-encapsulated ytterbium-doped bismuth sulfide (Yb-Bi 2 S 3 /PMA), is synthesized by hydrothermal method for self-sufficient electron donor-based PEC sensing. Further, the Yb-Bi 2 S 3 /PMA heterojunction is decorated on flexible and integrated laser-induced graphene electrode arrays, providing ultrafast charge carrier transfer capacity and robust mechanical durability (300 bending cycles) for subsequent wearable PEC sensing. As a showcase, the aptamer molecular recognition-based wearable PEC sensor for sweat trace Neuropeptide Y (NPY, a stress or depression biomarker) presents an ultra-low detection limit (0.39 fM) and good anti-interference ability. Moreover, the integration of wearable PEC aptasensor with signal processing and wireless communication facilitates nonirritating and in situ analysis of sweat trace NPY dynamics in various real scenarios (feeding behaviors, physiological stress, and circadian rhythm). More broadly, this research establishes the foundation for NIR-excitable semiconductors equipped with self-sufficient electron donor capabilities, unlocking the potential for ultrasensitive wearable PEC sensing applications.
研究领域:
材料科学
·
生物医学工程
·
光电化学传感
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Yan Xiangyang,Li Ningning,Li Maoyi,Fan Kaixuan,Xia Huiyun
This study addresses the efficient
and safe purification
of low-concentration
atmospheric NO. A Yb/Er-codoped nanostructured BiOBr was synthesized
via a solvothermal method, and a composite superhydrophobic coating
(FSBE) was fabricated by a layer-by-layer spraying strategy using
epoxy resin, nano-SiO 2 , and perfluoroalkyltrimethoxysilane,
achieving integrated high photocatalytic activity and excellent micronano-structured
superhydrophobicity. The Yb/Er codoping successfully modulates the
original layered BiOBr into spherical hollow microspheres assembled
from interconnected nanoplates with an optimal Yb/Er ratio of 10:1.
This modification enlarges the specific surface area by approximately
7 times, broadens the light response range, and effectively restrains
the recombination of photogenerated carriers. The constructed FSBE
coating possesses a micronano rough surface with water and ethylene
glycol contact angles above 150 ° , demonstrating superior self-cleaning
performance. Under visible light and full-spectrum irradiation, the
FSBE coating delivers NO degradation efficiencies of 62.0 and 78.4%,
which are 2.85-fold and 1.5-fold higher than those of pure BiOBr,
respectively, while efficiently suppressing NO 2 accumulation.
The coating maintains a photocatalytic efficiency of 65.8% after five
cycling tests and exhibits excellent mechanical abrasion resistance
and chemical stability. The synergistic effect between the superhydrophobic
self-cleaning structure and nanoscale rare-earth-doping-enhanced photocatalysis
accounts for its durable NO purification capability. This work provides
an insight into the design of high-performance and long-lived photocatalytic
nanocoatings for atmospheric environmental remediation.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Yue Wang,Yaomin Lei,Wuqin Chen,Ruian Yang,Xinyang Gu,Gaofeng Pan,Xuesong Zhai,Jinshan Wang
Luminescence quenching effect of lanthanide-doped upconversion materials occurs with high probability even in larger-sized particles, but their main quenching pathway remains controversial. In this work, we investigate the influence of the surfactant and pH value on the luminescence properties of β-NaLuF 4 :Yb,Er microcrystals. A convincing evidence can be provided by the combination of X-ray diffraction (XRD), inductively coupled plasma (ICP) spectrometer, and Eu 3+ structural probe measurements that the major quenching pathway comes from the fast energy migration from the excited lanthanides to nearby OH − defects in the crystal lattice rather than surface quenching effect. Even at OH − -rich reactant condition, the upconversion luminescence intensity becomes more efficient by reduced internal quenching effects. Our findings provide a new and fundamental understanding of severe luminescence quenching effect at microscale, thus guiding the design and preparation of highly efficient upconversion materials.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Physics Research
·
2022
·Vol. 2
·期 4
·2200071
·
IF 0
Weifan Niu,Ruidan Zhang,Zhibin Wang,Feng Huang,Daqin Chen
Perovskite nanocrystals (NCs) with intentionally introduced Mn 2+ /Yb 3+ activators enable tunable emissions covering UV-orange-NIR spectral range. However, the exact microscopic energy transfer mechanisms in this system remain unknown. Herein, Mn/Yb codoped CsPbCl 3 perovskite NCs with triple emissions originated from exciton recombination of host, 3d–3d transition of Mn 2+ and 4f–4f transition of Yb 3+ are prepared. Femtosecond resolution transient absorption spectra performed on the pristine CsPbCl 3 , Mn-doped, Yb-doped and Mn/Yb codoped samples clarify efficient and simultaneous energy transfer (ET) from excitons to Mn 2+ and Yb 3+ dopants. It is testified the sensitizations of dopants mainly result from the trapped hole, taking 285 ps for Mn 2+ and 17 ps for Yb 3+ respectively, which make less trapped hole recombine with de-localized carriers. Importantly, energy transfer processes from host to Mn 2+ and Yb 3+ activators emerge as competition, and the ET probability of exciton-to-Mn 2+ is higher than that of exciton-to-Yb 3+ . Finally, control experiments further prove that tunable Mn 2+ orange emission and Yb 3+ NIR emission are achievable via elaborate adjustment of the dopant concentrations.
研究领域:
材料科学
·
物理化学
✓ 已验证
DOI
MATERIALS RESEARCH BULLETIN
·
2020
·
IF 4.019
Abdul Manan,Siraj Khan,Atta Ullah,Arbab Safeer Ahmad,Yaseen Iqbal,Ibrahim Qazi,Amjad Ullah,Zhonghua Yao,Hanxing Liu,Hua Hao,Murad Ali Khan,Maqbool Ur Rehman
Bi 0.4806-x Yb x Na 0.4606 Ba 0.0588 Ti 0.98 Al 0.02 O 3 (x = 0.0, 0.005, 0.01, 0.05) ceramics were processed using a solid state sintering route. Highly dense microstructure with maximum apparent density was obtained for the composition of x = 0.005. The polarization versus electric field (P-E) loop got relatively slimmer and remnant polarization decreased with an increase in x content. A maximum recoverable energy density of 0.69 J/cm 3 at a DBS of 95 kV/cm was obtained at x = 0.005 with its dielectric constant satisfying the condition of Δε r /ε r200 ° C ≤ ±15 % in a working temperature range of 97–383 °C having <0.02 dielectric loss.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
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
RSC Advances
·
2018
·Vol. 8
·期 61
·35306-35313
·
IF 2.936
Pengpeng Feng,Yusong Pan,Hui Ye
NaYF4:Yb,Tm upconversion nanocrystals with hexagonal structure possess excellent photoluminescence emission characteristics. Under near infrared (NIR) light irradiation, the Yb3+ ions act as sensitizers to absorb the NIR light and transform NIR light into ultraviolet (UV) and visible (Vis) light continuously. Hybrid NIR-activated photocatalysts can be fabricated by combining upconversion nanocrystals with various semiconductor nanocrystals. In this paper, NaYF4:Yb,Tm micro-rods were hydrothermally synthesized with oleic acid as capping ligand. The NaYF4:Yb,Tm@CdS composite was fabricated by in situ generation of CdS nanoclusters on the surface of NaYF4:Yb,Tm micro-rods. The morphologies and structures of NaY4:Yb,Tm and NaYF4:Yb,Tm@CdS were characterized by XRD, SEM, TEM, XPS, UV-Vis and PL spectroscopy. The results of photocatalytic experiments indicated that the NaYF4:Yb,Tm@CdS composite displayed photocatalytic activity under NIR irradiation. In comparison with pure CdS, the photocatalytic ability of NaYF4:Yb,Tm@CdS composite under Vis-NIR irradiation was obviously enhanced. 82% of RhB was degraded by NaYF4:Yb,Tm@CdS catalyst within 75 min under Vis-NIR irradiation, which was more effective than pure CdS (65% degradation of RhB).
研究领域:
材料科学
·
纳米技术
·
光催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Kailong Yang,Lin Chen,Fushuo Wu,Qi Zheng,Jianyu Li,Peng Song,Yanfei Wang,Rongjun Liu,Jing Feng
Monoclinic (m) and monoclinic-prime (m′) phases of Yb(Ta x Nb 1− x )O 4 ceramics were synthesized successfully, and the relationships between the crystal structures and the thermophysical properties were investigated by various methods. A ferroelastic domain existed in the m-Yb(Ta x Nb 1- x )O 4 ceramics, as observed by a scanning electron microscopy, which suggests that a ferroelastic phase transition occurred. The minimum thermal conductivity of the Yb(Ta x Nb 1− x )O 4 ceramics was 1.49 W m −1 ·K −1 , whereas the maximum thermal expansion coefficient (TEC) was 10.6 × 10 −6 K −1 (1200 °C). The m-phase had a lower Young's modulus (110–132 GPa) than the m′-phase (133–140 GPa). In view of the low thermal conductivity and high TEC, Yb(Ta x Nb 1− x )O 4 ceramics have the potential to be high-temperature structural ceramics .
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2022
·Vol. 128
·期 9
·1-9
·
IF 2.983
Han Zhanwen,Yu Hongquan,Tian Zhuang,Zhang Jinsu,Sun Jiashi,Li Xiangping,Xu Sai,Chen Baojiu
The lanthanide-based white light-emitting diodes excited by irradiation at a wavelength of 980 nm have attracted increasing attention because of their low photon frequency and ease of implementation. Here, we report on warm, white, Y 2 Ti 2 O 7 :Tm/Yb/Er nanotubes prepared by a simple single-needle electrospinning method. The Y 2 Ti 2 O 7 :Tm/Yb/Er nanotubes have an outer diameter of about 180 nm, and a wall thickness of 36 nm. Their color coordinates and chromaticity were controlled to yellow → red → warm white by adjusting the Tm 3+ concentration from 0.5 to 2.0%. The luminescence properties and upconversion mechanism of Y 2 Ti 2 O 7 :Tm/Yb/Er nanotubes were investigated. The warm white Y 2 Ti 2 O 7 :Tm/Yb/Er nanotubes exhibit a strong correlated color temperature to a household incandescent lamp.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2026
·
IF 7.2
Sihan Wang,Xiaojun Guo,Xiadiyan Refuhati,Yanzhen Xiao,Lei Yan,Zhengkun Fu,Zhenglong Zhang
Upconversion luminescent materials have broad application prospects in lighting, display, and laser technology. However, single-phase systems are constrained by performance bottlenecks, making it difficult to simultaneously achieve high temperature sensitivity and tunable luminescence. To address this challenge, (Yb x Er 1-x ) 2 SiO 5 /SiO 2 multiphase composite phosphors are synthesized using a low-temperature (300 °C) hydrothermal method. Under 976 nm excitation, the material exhibits concentration-dependent luminescence: as the Yb fraction increases, the red emission at 660 nm continuously enhances, while the green emission shows initial enhancement followed by suppression. This behavior is attributed to an energy back-transfer mechanism between Yb 3+ and Er 3+ ions. Regarding temperature sensing, a highly repeatable thermal response is observed through the fluorescence intensity ratio of Er 3+ levels. Specifically, the thermally coupled levels show a relative sensitivity of 1.91% K −1 , while the non-thermally coupled levels exhibit an absolute sensitivity of 0.1063 K −1 . Furthermore, precise adjustment of Yb 3+ content, excitation power, or temperature enables continuous color tuning from green to red. This work simultaneously realizes high-precision temperature sensing and dynamic luminescence color control in upconversion materials, providing novel design concepts and practical pathways for developing multifunctional optical materials.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）