Article
Spectroscopy
Jia Zhang, Songsong An, Yining Zhang, Yamei Zhang
Summary: A series of novel LS:Er3+,Yb3+ luminescent materials were successfully synthesized and their upconversion luminescence properties and temperature-sensing performance were systematically investigated. The study found that the optimal Yb3+ concentration in LS:1%Er3+,xYb(3+) was x=15%, and the LS:Er3+,Yb3+ material exhibited good reversibility and repeatability.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Spectroscopy
Murat Erdem, Selim Burak Canturk, Gonul Eryurek
Summary: In this study, orthorhombic Yb3+/Er3+ co-doped La2Ti2O7 phosphors were successfully synthesized using the solid-state reaction method. The pump power and temperature dependencies of the phosphors were investigated for color tunability and optical thermometry. It was found that the pump power significantly affected the color coordinates of the phosphors, and a two-photon transition mechanism was proposed for the upconversion energy transfer process. The optical temperature sensor sensitivities were calculated using the fluorescence intensity ratio technique.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Optics
Ankur Shandilya, K. Sreenivas
Summary: In this study, augmented sensitization and the formation of [Yb-MoO4]2- dimers in tri-doped SrWO4 ceramic compositions were investigated. The structural distortion and chemical reactions caused by the substitution of Er-Yb ions for Sr2+ and Mo6+ for W6+ were confirmed by X-ray diffraction and spectroscopic analysis. The selective enhancement of green emission and up-conversion emission intensity were attributed to the development of [Yb-MoO4]2- dimers.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Lei Li, Yongze Cao, Hongqiang Cui, Guojian Li, Ying Li, Yuhang Zhang, Jinsu Zhang, Baojiu Chen
Summary: BiTa7O19:Er3+/Yb3+/Sb phosphors were synthesized by high temperature solid sintering and characterized using XRD, fluorescence spectrometry, and XPS. The results showed that polyvalent Sb doping improved the upconversion luminescence (UCL) intensity by 1.2 times due to the adjustment of the local lattice structure of BiTa7O19. The luminescence intensity ratio (LIR) approach was used to estimate the maximum absolute and relative sensitivities, indicating the potential use of BiTa7O19:Er3+/Yb3+/Sb as a temperature sensor.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Qingran Wang, Hao Wu, Liangliang Zhang, Huajun Wu, Yongshi Luo, Guohui Pan, Zhendong Hao, Quanquan Mu, Jiahua Zhang
Summary: Er3+ and Yb3+ codoped Gd2Mo4O15 upconversion phosphors were synthesized and studied for their luminescent properties and temperature sensing behaviors. The results indicate that Gd2Mo4O15 is a promising green upconversion phosphor for optical thermometry.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Hongqiang Cui, Yongze Cao, Lei Zhang, Ying Li, Yuhang Zhang, Lei Li, Jinsu Zhang, Baojiu Chen
Summary: A series of Er3+/Yb3+ co-doped Cs3GdGe3O9 (CGG) phosphors were prepared and their microstructure and upconversion luminescence properties were studied. Abnormal phenomena were observed, including continuously increasing upconversion luminescence intensity under 980 nm laser irradiation and thermal enhancement. The phenomenon is attributed to electron releasing of host defects. CGG:Er3+/Yb3+ phosphors exhibit temperature-dependent upconversion luminescence, with a significant increase in intensity at higher temperatures. The maximum absolute sensitivity and relative sensitivity of the samples were calculated, and it was found that CGG:Er3+/Yb3+ phosphors can be used as a high-temperature optical thermometer.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Kamel Saidi, Mohamed Dammak, K. Soler-Carracedo, Inocencio R. Martin
Summary: In this study, Yb3+-Er3+ and Yb3+-Ho3+ co-doped Na3Gd(VO4)2 (NGVO) microparticles were synthesized using a citrate-based sol-gel method, allowing for temperature sensing in the visible region with high sensitivity. The NGVO:Yb3+/Ho3+ phosphors showed excellent thermal resolution in high-temperature environments, suggesting potential applications as safety signs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Peng Wang, Xusheng Wang, Guorong Li, Yanxia Li, Xi Yao, Zhongbin Pan
Summary: In this study, rare-earth element substituted ferroelectric thin films were designed and fabricated, achieving excellent results in energy storage and luminescence, with good temperature stability and fatigue endurance. Additionally, the emission color can be controlled by changing the ion concentration, demonstrating multi-functionality.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Kunyao Wu, Zengzhe Xi, Zhao Li, Yuanyuan Lu, Jing Cao, Yongfeng Wang
Summary: SrWO4:Yb3+/Er3+ upconversion luminescent materials with different Yb3+/Er3+ doping concentrations were prepared by high temperature solid-sate reaction. The sample containing 7% Yb3+ and 2.5% Er3+ showed the best luminescence performance, with emission peak in the orange-red area under 980 nm excitation light. These phosphors may be a promising candidate for upconversion white light-emitting diodes (WLEDs).
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Shiping Wang, Bingye Zhang, Ying Li, Jinsu Zhang, Baojiu Chen
Summary: A series of SNYPF: Yb3+, Er3+ phosphors were synthesized by high temperature solid-phase method, exhibiting significant optical temperature sensing feature. The green emission remained stable even with increasing temperature, indicating excellent thermal stability. This suggests that SNYPF: Yb3+, Er3+ is a potential UC phosphor for optical temperature sensing applications.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Nanoscience & Nanotechnology
Pratik S. Solanki, Sangeetha Balabhadra, Michael F. Reid, Vladimir B. Golovko, Jon-Paul R. Wells
Summary: This study demonstrates high-sensitivity luminescence thermometry using Yb3+/Er3+ co-doped KY3F10 core and core-shell upconverting nanoparticles. By tuning the excitation wavelength to 975 nm for resonant excitation with optical transitions of the Yb3+ ion, the highest thermal sensitivities and temperature uncertainties were achieved. High-resolution Yb3+ excitation spectra were recorded by observing Er3+ upconversion fluorescence, with significant enhancement in fluorescence intensity observed for core and core-shell nanoparticles.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Wei Zheng, Baoyu Sun, Yuemei Li, Rui Wang
Summary: This study introduces a new strategy for nanothermometry, utilizing the synergistic effects of Er3+ and inverse fluorescence intensity ratio in Gd2O3:Er3+,Yb3+ nanospheres to significantly enhance absolute sensitivity. Controllable tuning of sensitivity was achieved by adjusting Yb3+ concentration, while also maintaining outstanding signal discriminability.
ACS APPLIED NANO MATERIALS
(2021)
Article
Optics
Juhong Miao, Mingyuan Chen, Zichen Chen, Lei Zhang, Song Wei, Xinye Yang
Summary: Yb3+, Er3+ upconversion (UC) micro-crystals with a tetragonal structure were fabricated through a modified sol-gel method. The samples exhibit green and red bands under excitation of 980 nm light, with the green emission intensity reaching maximum at 2.0% Yb3+ content. The Yb3+/Er3+ co-doped La2MoO6 phosphors show excellent temperature sensing capability and stability, making them promising candidates for temperature sensing applications.
Article
Engineering, Electrical & Electronic
Haisheng Hu, Qun Jiang, Yunfei Li, Meitang Liu
Summary: The K+-doped (Na1-xKx)GdF4:Er3+,Yb3+ upconversion materials were successfully synthesized using solvothermal method. The doping of K+ was found to greatly influence the upconversion properties. By coating the doped material with a homogeneous shell layer, a new core-shell (Na0.9K0.1)GdF4:Er3+,Yb3+@NaGdF4 nanomaterials with enhanced light emission intensity was produced. The study also revealed a two-photon mechanism for (Na1-x K-x)GdF4:Er3+,Yb3+ upconversion materials.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Yingzhu Zi, Zhengwen Yang, Zan Xu, Xue Bai, Asad Ullah, Imran Khan, Asif Ali Haider, Jianbei Qiu, Zhiguo Song, Yuehui Wang, Yangke Cun
Summary: In this study, upconversion luminescence of rare earth ions in negative and positive thermal expansion hosts was investigated for temperature sensing applications. The results showed that the luminescence behavior varied with temperature, offering potential for novel temperature sensing devices using a mixed phosphor approach.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Correction
Chemistry, Physical
Chen Luo, Yan Shao, Hua Yu, Hong-zhi Ma, Yu-hao Zhang, Long Gu, Bo Yin, Ming-bo Yang
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Stefano Borocci, Armando Camerlingo, Felice Grandinetti, Maria Rutigliano, Nico Sanna
Summary: The complexes of He, Ne, Ar, Kr, and Xe with B3N3H6 were investigated using MP2, CCSD(T), and SAPT ab initio methods. The complexes can be described as mono-, di-, and tri-coordinated to the N atoms, with stability following the order N-mono < N-di < N-tri. The interactions are dominated by dispersion and the binding energies are within the range of 1 or 2 kcal mol(-1). The results were compared with a recent DFT study on larger BN sheets complexes [Phys. Chem. Chem. Phys. 24 (2022) 2554-2566.].
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
V. Nagarajan, R. Bhuvaneswari, R. Chandiramouli
Summary: In this study, stable phosphoborane was used as a sensor to detect isobutane and n-propane in Liquefied Petroleum Gas (LPG). Phosphoborane demonstrated structural stability and semiconducting nature, and exhibited promising adsorption properties for the LPG molecules.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Xiaoxi Xu, Zijiang Yang, Bayaer Buren, Maodu Chen
Summary: In this study, the time-dependent wave packet method was used to investigate the reaction channels and mechanisms of Ca+ + HD. The results show that the CaH+ + D reaction channel plays a primary role, which is consistent with experimental results. Complex forming and direct-abstraction reaction mechanisms exist in this reaction process.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Keshab Pandey, Hae Kyung Jeong
Summary: A free-standing silicon-carbon nanofiber composite film was synthesized and investigated for supercapacitor applications. It exhibited high specific capacitance, energy density, and power density. After 5000 cycles, the film showed excellent specific capacitance retention and Coulombic efficiency.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Xinyu Zhang, Haosong Li, Xiaoyu Cao, Jing Gao, Yong Wei, Jianzhuo Zhu
Summary: The evaporation behavior of nanosized water aggregations on two-dimensional electroneutral solid surfaces with different surface polar unit densities was investigated. The results showed that the evaporation rate changes non-monotonically with the surface polar unit density, and the minimum evaporation rate is obtained when the surface has a modest surface polar unit ratio of 66.7%.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Yanyan Xu, Rui Dai, Xiaojie Wang, Zhijun Qiao, Haowei Wen, Dianbo Ruan, Yuzuo Wang
Summary: This article presents an innovative solvothermal sodium insertion method for synthesizing Triphylite-NaFePO4, which demonstrates optimal electrochemical performance in sodium-ion batteries.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Meiyi Jiang, Kun Yang, Yancheng Liu, Li Yao
Summary: The geometric structure and electronic properties of transition metal M (M = Cu, Fe, Mn)-TiO2 (101) surface adsorbed by NO2 and N2O were calculated by density functional theory (DFT) and DFT + U theory. The results showed that the adsorption of NO2 and N2O on Mn and Fe atoms is more stable, and a large number of active electrons are formed around these atoms, facilitating the catalytic reactions.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Sergey A. Vyrko, Yulia G. Polynskaya, Nikita A. Matsokin, Andrey M. Popov, Andrey A. Knizhnik, Nikolai A. Poklonski, Yurii E. Lozovik
Summary: In this study, carbon nanobracelets, which are cyclic molecules composed of alternating polycyclic regions and double carbon chains, were investigated using spin-polarized density functional theory. The results show that carbon nanobracelets with odd number of monomers exhibit distinct electronic energy levels, band gaps, and carbon chain deformation compared to those with even number of monomers.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Chanchan Wang, Quan Yang, Yanzhi Ding, Xiaoyong Lu, Dong Tian
Summary: It has been found that the introduction of buffer layers improves the electrical performance of solid oxide fuel cells (SSOFCs). In this study, varying ratios of Gd-doped CeO2 were used as buffer layers in YSZ-based SSOFCs. The results demonstrate that the performance of SSOFCs is enhanced when a buffer layer is added, with the highest performance achieved using Ce0.8Gd0.2O2-delta (GDC20) as the buffer layer. This suggests that the use of GDC series buffer layers is an attractive strategy to optimize performance loss due to electrolyte-electrode interactions.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Wang Li, Yi-Fan Zhang, Jia-Bin Huang, Chang-Yang Wang, Feng Zhang, Jiu-Zhong Yang, Long Zhao
Summary: The gas-phase reaction of propargyl with vinylacetylene was investigated using synchrotron photoionization and molecular-beam mass spectrometry methodologies. The formation mechanisms of the resulting cyclic structures were examined using quantum computations. Two previously unidentified isomers were detected and identified for the first time.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Avijit Pramanik, Sanchita Kundu, Olorunsola Praise Kolawole, Kaelin Gates, Paresh Chandra Ray
Summary: This study investigates the influence of aspect ratio and quantum confinement on the single-photon and two-photon absorption cross-section of perovskite CsPbI3 nanorods. Experimental data shows that CsPbI3 nanorods have an extremely high two-photon absorption cross-section, significantly surpassing organic chromophores and other CsPbBr3 nanocrystals. Moreover, adjusting the aspect ratio can significantly enhance the absorption ability. Additionally, the study also reveals a moderate quantum confinement effect on the single-photon and two-photon absorption cross-section of the nanorods.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Hyon-Tae Pak, Jin-A Choe, Kyong-Sik Ju, Yong -Son Rim
Summary: Drug-loaded cellulose diacetate (CDA) membranes were prepared using different compositions of mixed solvent. The microstructure and performance of the membranes were investigated, and a method to predict drug release properties was proposed. The results showed that the composition of the mixed solvent significantly affected the overall performance of CDA membranes, and the release rates of drugs were related to Δdelta and the intrinsic viscosity of CDA.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Gabriella E. Ravin, E. Curotto
Summary: We have developed a systematic approach to optimize the training set sizes for neural networks in fitting ab initio potential energy surfaces. Using this approach, we have constructed several spectroscopic quality potential energy surfaces for [Li(H2)n]+, n = 1 - 9. The ground state properties have been computed for all the systems and selected states.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Guohua Xu, Lei Xu, Feng Zhang, Chunling Yu, Yu Song
Summary: NiS1.03@Ni7S6/carbon composite was successfully prepared using corn stalk as a carbon source via a simple adsorption-sulphurization process. The composite exhibited a specific capacitance of 1554.6 F/g at 1 A/g as a supercapacitor electrode, with a capacitance retention rate of 80.4% after 5000 cycles. Furthermore, the NiS1.03@Ni7S6/carbon//AC asymmetric supercapacitor showed a high energy density of 41.2 Wh kg-1 at a power density of 750 W kg-1, and excellent cycling stability with 86.8% capacitance retention after 10,000 cycles.
CHEMICAL PHYSICS LETTERS
(2024)