检索结果-内蒙古大学图书馆

Phonon engineering in Yb:La_(2)CaB_(10)O_(19)crystal for extended lasing beyond the fluorescence spectrum

Light(Science & Applications) 2023年第9期12卷 1921-1929页

作者： Yanling Cheng Fei Liang Dazhi Lu Jingcheng Feng Guochun Zhang Haohai Yu Huaijin Zhang Yicheng Wu State Key Laboratory of Crystal Materials and Institute of Crystal Materials Shandong UniversityJinan 250100China Key Lab Functional Crystals and Laser Technology Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

Since the first invention of the laser in 1960,direct lasing outside the fluorescence spectrum is deemed impossible owing to the“zero-gain”***,when electron-phonon coupling meets laser oscillation,an energy modulation by the quantized phonon can tailor the electronic transitions,thus directly creating some unprecedented lasers with extended wavelengths by phonon ***,we demonstrate a broadband lasing(1000-1280 nm)in a Yb-doped La_(2)CaB_(10)O_(19)(Yb:LCB)crystal,far beyond its spontaneous fluorescence *** calculations and in situ Raman verify that such a substantial laser emission is devoted to the multiphonon coupling to lattice vibrations of a dangling“quasi-free-oxygen”site,with the increasing phonon numbers step-by-step(n=1–6).This new structural motif provides more alternative candidates with strong-coupling laser ***,the quantitative relations between phonon density distribution and laser wavelength extension are *** results give rise to the search for on-demand lasers in the darkness and pave a reliable guideline to study those intriguing electron-phonon-photon coupled systems for integrated photonic applications.

关键词： beyond lasing spectrum

来源：评论

学校读者我要写书评

暂无评论

A cost-effective pyrrole additive for realizing highly stable Zn anode

引用

Rare Metals 2025年第1期44卷 209-217页

作者： Qian Wang Bo-Hui Xu Yi-Xun Du Ling-Yao Kuang Zhe-Shuai Lin Xing-Xing Gu Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology And Business UniversityChongqing 400067China Functional Crystals Lab Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

In recent years,researchers have increasingly focused on aqueous rechargeable Zn-ion batteries(AZIBs)as a cost-effective and safe alternative to lithium-ion batteries for energy ***,the limited reversibility of the Zn anode and the low coulombic efficiency of the electroplating process limit the application of *** this work,pyrrole is employed as a cost-effective electrolyte additive for stabilizing the Zn anode for the first *** altering the coordination environment of Zn(H2O)62+,chemical and hydrogen evolution corrosion was reduced,and a molecular interface layer was in-situ constructed on the surface of the metal Zn anode,thus effectively inhibiting the corrosion of Zn anode and the growth of *** addition,the molecular interface layer based on pyrrole can effectively regulate the uniform deposition of Zn ions and limit the 2D diffusion of Zn ***,the electrochemical performance of the metal Zn anode is greatly improved in the pyrrole-based *** the current density of 1 mA·cm^(-2),the stable cycle can exceed 1200 h,and the average Coulomb efficiency is as high as 99%.Moreover,the full battery can have more than 400 stable cycles with a reversible capacity 247.9 mAh·g^(-1)at a current density 0.5 A·g^(-1)when assembled with V2O5 *** work provides a simple and feasible strategy for realizing the high performance of aqueous Zn-ion batteries.

关键词： Nitrogen-containing heterocyclic molecule Electrolyte additive Zinc-ion battery

来源：评论

学校读者我要写书评

暂无评论

Large sliding regulation in van der waals layered nonlinear optical ternary chalcogenides

引用

npj Computational Materials 2023年第1期9卷 574-583页

作者： Qingchen Wu Lei Kang Jian Wu Zheshuai Lin Functional Crystals Lab Key Laboratory of Functional Crystals and Laser TechnologyTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China State Key Laboratory of Low-Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084People’s Republic of China

Interlayer sliding modulation in van der Waals(vdW)layered materials opens opportunities to seek tunable applications for photonics and optoelectronics at the *** this work,focusing on ternary chalcogenides,dozens of typical vdW layered materials with the formula of A_(2)MZ_(4)(A,M=metal cation;Z=S/Se)were systematically classified and studied to illustrate the interlayer sliding modulation performance on nonlinear optical(NLO)effect and underlying *** on first-principles analysis,the screened Cd_(2)GeSe_(4) exhibits large second harmonic generation(SHG)deviation(>36 times between high-and low-SHG states)under sliding among all studied *** phenomenon arises from the polarization modulation induced by the vdW interlayer charge redistribution of two tetrahedral primitives in the ternary edge-sharing tetrahedral *** findings present a strategy to substantially modulate NLO properties by altering the interlayer charge coupling which is commonly thought to be very weak in vdW layered materials.

关键词： materials mechanism layered

来源：评论

学校读者我要写书评

暂无评论

Unexpected giant negative area compressibility in palladium diselenide

引用

National Science Review 2023年第9期10卷 146-153页

作者： Xingxing Jiang Shengzi Zhang Dequan Jiang Yonggang Wang Maxim S.Molokeev Naizheng Wang Youquan Liu Xingyu Zhang Zheshuai Lin New Functional Crystals Group Key Laboratory of Functional Crystals and Laser TechnologyTechnical Institute of Physics and ChemistryChinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences University of Chinese Academy of Sciences Center for High Pressure Science &Technology Advanced Research School of Materials Science and Engineering Peking University Laboratory of Crystal Physics Kirensky Institute of PhysicsSB RAS Department of Physics Far Eastern State Transport University International Research Center of Spectroscopy and Quantum Chemistry Siberian Federal University

Negative area compressibility（NAC） is a counterintuitive 'squeeze-expand' behavior in solids that is very rare but attractive due to possible pressure-response applications and coupling with rich physicochemical ***,NAC behavior is reported in palladium diselenide with a large magnitude and wide pressure *** discover that,apart from the rigid flattening of layers that has been generally recognized,the unexpected giant NAC effect in PdSe2largely comes from anomalous elongation of intralayer chemical *** structural variations are driven by intralayer-to-interlayer charge transfer with enhanced interlayer interactions under *** work updates the mechanical understanding of this anomaly and establishes a new guideline to explore novel compression-induced properties.

关键词： negative area compressibility Lifshitz mechanism charge transfer

来源：评论

学校读者我要写书评

暂无评论

Polar and layered wide-bandgap semiconductors WO2Cl2 and MoO2Br2 with giant birefringence, large second harmonic and ferroelectric photovoltaic effects

引用

Physical Review B 2024年第15期109卷 155421-155421页

作者： Hao Huo Xiao Jiang Lei Kang Functional Crystals Lab Key Laboratory of Functional Crystals and Laser Technology Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China Beijing Computational Science Research Center Beijing 100193 China

van der Waals (vdW) layered semiconductors exhibiting large nonlinear-optical (NLO) effects have substantial potential for developing nanoscale quantum optical devices. NbOCl2, an ultrathin quantum light source, has recently displayed a large second harmonic effect. However, its small bandgap (∼1.8 eV) impedes transparent light conversion across wide spectral regions, especially when utilizing practical 1-µm lasers. In this paper, we found that MO2X2 (M=W, Mo; X=Cl, Br) effectively widens the bandgap by using W6+ or Mo6+ instead of Nb4+ to eliminate in-gap nonbonding orbitals. Meanwhile, the octahedral [MO4X2] motifs display polar Jahn-Teller distortions as large as [NbO2X4] to demonstrate comparable NLO polarization effects. Based on first-principles calculations, WO2Cl2 and MoO2Br2 are predicted to possess wider bandgaps (2.9 and 2.2 eV), giant birefringence (0.5–0.7), and significant second harmonic and ferroelectric photovoltaic effects competitive with NbOX2. These findings provide strong incentives to explore new vdW materials with superior NLO properties.

关键词： Jahn-Teller effect Nonlinear optics Optoelectronics

来源：评论

学校读者我要写书评

暂无评论

Polymorphism of LiCdBO_(3):Crystal structures,phase transitions and optical characterizations

引用

Chinese Journal of Structural Chemistry 2023年第1期42卷 5-8页

作者： Qingxiong Liu Qian Wu Tianyu Wang Lei Kang Zheshuai Lin Yonggang Wang Mingjun Xia Beijing Center for Crystal Research and Development Key Laboratory of Functional Crystals and Laser TechnologyTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100190China School of Materials Science and Engineering Peking UniversityBeijing 100871China School of Future Technology University of Chinese Academy of SciencesBeijing100049China

*** Inorganic borate crystals have received considerable attention in many applications as nonlinear optical(NLO)crystals,birefringence crystals and scintillator materials[1-3].Recently,it is a well-known strategy for... 详细信息

关键词： transitions utilizing designing

来源：评论

学校读者我要写书评

暂无评论

High-repetition-rate mid-infrared optical parametric oscillator based on BaGa4Se7 Crystal pumped by a 1064 nm laser

High-repetition-rate mid-infrared optical parametric oscilla...

引用

2024 Conference on Spectral technology and Applications, CSTA 2024

作者： Sun, Yue Xu, Degang Zhao, Yuantao Chen, Kai Wang, Yuye Zhong, Kai Li, Jining Yao, Jiyong Yao, Jianquan School of Precision Instruments and Optoelectronics Engineering Tianjin University Tianjin300072 China Tianjin University Tianjin300072 China Beijing Center for Crystal Research and Development Key Lab of Functional Crystals and Laser Technology Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781510683082

A mid-infrared BaGa4Se7 (BGSe) optical parametric oscillator (OPO) pumped by a 1064 nm laser with a repetition frequency of 1 kHz was demonstrated. The maximum output power at the wavelength of 6.48 μm was 40.2 mW with a pulse width of 6.45 ns, corresponding to the peak power of 6.23 kW. The characteristics of MIR tuning for BGSe-OPO were investigated using temperature and angle tuning methods. A tunable output in the 6.48-6.89 μm range was obtained. The high-repetition-rate MIR lasers within the 6-7 µm range provide a kind of new source for a variety of practical applications. © 2024 SPIE.

关键词： Pulse repetition rate

来源：评论

学校读者我要写书评

暂无评论

Minimizing Carbon Content with Three-in-One functionalized Nano Conductive Ceramics:Toward More Practical and Safer S Cathodes of Li-S Cells

引用

Energy & Environmental Materials 2023年第3期6卷 31-39页

作者： Ning Li Chang Sun Jianhui Zhu Shun Li Yanlong Wang Maowen Xu Changming Li Jian Jiang School of Materials and Energy and Chongqing Key Lab for Advanced Materials and Clean Energies of TechnologiesSouthwest UniversityChongqing 400715China School of Physical Science and Technology Southwest UniversityChongqing 400715China Key Laboratory of Chemical Lasers Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China College of Chemistry and Chemical Engineering Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Provinceand Key Laboratory of Functional Materials and Photoelectrochemistry of HaikouHainan Normal UniversityHaikou 571158China

Using porous carbon hosts in cathodes of Li-S cells can disperse S actives and offset their poor electrical ***,such reservoirs would in turn absorb excess electrolyte solvents to S-unfilled regions,causing the electrolyte overconsumption,specific energy decline,and even safety hazards for battery *** build better cathodes,we propose to substitute carbons by In-doped SnO_(2)(ITO)nano ceramics that own three-in-one functionalities:1)using conductive ITO enables minimizing the total carbon content to an extremely low mass ratio(~3%)in cathodes,elevating the electrode tap density and averting the electrolyte overuse;2)polar ITO nanoclusters can serve as robust anchors toward Li polysulfide(LiPS)by electrostatic adsorption or chemical bond interactions;3)they offer catalysis centers for liquid–solid phase conversions of S-based ***,such ceramics are intrinsically nonflammable,preventing S cathodes away from thermal runaway or *** merits entail our configured cathodes with high tap density(1.54 g cm^(−3)),less electrolyte usage,good security for flame retardance,and decent Li-storage *** lean and LiNO_(3)-free electrolyte,packed full cells exhibit excellent redox kinetics,suppressed LiPS shuttling,and excellent *** may trigger great research enthusiasm in rational design of low-carbon and safer S cathodes.

关键词： flame retardance Li-S cells minimized carbon ratio nano conductive ceramics three-in-one functionality

来源：评论

学校读者我要写书评

暂无评论

Barocaloric effect in ferroelastic Pb_(3)(VO_(4))_(2)

引用

Chinese Physics B 2025年第3期34卷 506-510页

作者： Pengtao Cheng Zuhua Chen Chengliang Zhang Zhengming Zhang Bing Li Dunhui Wang Hangzhou Dianzi University Hangzhou 310018China National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093China Center for Crystal Research and Development Key Laboratory of Functional Crystals and Laser TechnologyKey Laboratory of CryogenicsTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China

The barocaloric effect is considered as one of the most promising refrigeration with the potential to replace traditional gas compression *** of the main obstacles to the application of barocaloric materials lies in the requirement for high driving *** this paper,we report on the barocaloric effect of Pb_(3)(VO_(4))_(2),which exhibits a ferroelastic transition from a high-temperature trigonal structure to a low-temperature monoclinic structure at 357 K,accompanied by a substantial volume *** entropy change induced by hydrostatic pressure can reach up 14 J·kg^(-1)·K^(-1)under a relatively low pressure of 80 *** work is expected to expand the selection range of barocaloric materials.

关键词： solid-state refrigeration barocaloric effect ferroelastic transition

来源：评论

学校读者我要写书评

暂无评论

The compatibly large nonlinear optical effect and high laser-induced damage threshold in a thiophosphate CsInP_(2)S_(7)constructed with[P_(2)S_(7)]^(4-)and[InS_(6)]^(9-)

引用

Chinese Chemical Letters 2024年第1期35卷 533-536页

作者： Mengjia Luo Xiaohui Li Xingxing Jiang Zheshuai Lin Zhengyang Zhou Nanchang Key Laboratory of Photoelectric Conversion and Energy Storage Materials Nanchang Institute of TechnologyNanchang 330099China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050China Functional Crystals Lab Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China Institute of Experimental Physics Free University BerlinBerlin D-14195Germany

It is challenging to cooperatively improve the nonlinear optical(NLO)efficiency and the laser-induced damage threshold(LIDT).This work reports a novel IR NLO materials CsInP_(2)S_(7)(CIPS)designed by combination the strategies of alkali metals substitution and microscopic NLO units PS4 introduction based on AgGaS_(2).CIPS was composed of strongly distorted[InS_(6)]^(9-)octahedra and[P_(2)S_(7)]4-dimers constructed by corner-sharing[PS_(4)]^(3-),which increase the NLO efficiency and decrease thermal expansion anisotropy *** with AgGaS_(2),CIPS exhibited strong phase matchable NLO response ca.1.1×AGS@2.1μm,high LIDT ca.20.8×AgGaS_(2),and IR transparency up to 15.3μ*** analysis and theoretical investigation confirmed that large SHG effect and ultrahigh LIDT of CIPS originated from the synergistic contribution of[InS_(6)]^(9-)octahedra and[P_(2)S_(7)]*** results indicate that CIPS is a promising NLO candidate in the mid-IR region,and this study provides a new approach for developing potential NLO-LIDT compatible materials.

关键词： Infrared nonlinear optics materials A novel thiophosphate Structure design Structure-activity relationship High laser-induced damage threshold

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：