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| 1 | TiO2 sensitized by red-, green-, blue-emissive carbon dots for enhanced H2 production显示文摘Carbon dots(Cdots)with a broad light absorption range could be a potential stable sensitizer for TiO2,which is an excellent ultraviolet(UV)response photocatalyst.Herein,we systematically investigated the different color emissive Cdots-sensitized TiO2 for H2 production.Firstly,all kinds of Cdots enhanced the photocatalytic properties of TiO2.All the Cdots-sensitized TiO2 exhibits visible light H2 production due to their absorption in the visible light region.The photocurrent and H2 production amount display strong dependence on the light absorption range of Cdots.The blue-emissive Cdots endow the weak H2 production rate due to its weak absorption in the visible light.The enhanced photocatalytic activities are mainly contributed to the strong light absorbance and high-efficient charge separation.The light absorption of green-and red-emissive Cdots is another main factor for the high catalytic activities besides charge separation. | Dong-Xue Yang Dan Qu Xiang Miao Wen-Shuai Jiang Li An Yuan-Jing Wen Dan-Dan Wu Zai-Cheng Sun | 2019 | Rare Metals2019，38，5： | 8 |
| 2 | Aerosol light absorption in a coastal city in Southeast China:Temporal variations and implications for brown carbon显示文摘Light-absorbing carbonaceous aerosols including black carbon(BC) and brown carbon(BrC)play significant roles in atmospheric radiative properties. One-year measurements of aerosol light absorption at multi-wavelength were continuously conducted in Xiamen,southeast of China in 2014 to determine the light absorption properties including absorption coefficients(σabs) and absorption ?ngstr?m exponent(AAE) in the coastal city.Light absorptions of BC and BrC with their contributions to total light absorption were further quantified. Mean σabsat 370 nm and 880 nm were 56.6 ± 34.3 and 16.5 ± 11.2 Mm-1,respectively. σabspresented a double-peaks diurnal pattern with the maximum in the morning and the minimum in the afternoon. σabswas low in warm seasons and high in cold seasons. AAE ranged from 0.26 to 2.58 with the annual mean of 1.46, implying that both fossil fuel combustion and biomass burning influenced aerosol optical properties. σabsof BrC at 370 nm was 24.0 ± 5.7 Mm-1, contributing 42% to the total absorption. The highest AAE(1.52 ± 0.02) and largest BrC contributions(47% ± 4%) in winter suggested the significant influence of biomass burning on aerosol light absorption. Long-distance air masses passing through North China Plain and the Yangtze River Delta led to high AAE and BrC contributions. High AAE value of 1.46 in July indicated that long-range transport of the air pollutants from intense biomass burning in Southeast Asia would affect aerosol light absorption in Southeast China. The study will improve the understanding of light absorption properties of aerosols and the optical impacts of BrC in China. | Yuqing Qiu Xin Wu Yanru Zhang Lingling Xu Youwei Hong Jinsheng Chen Xiaoqiu Chen Junjun Deng | 2019 | Journal of Environmental Sciences2019，31，6： | 5 |
| 3 | Excellent light-capture capability of trilobal SiNW for ultra-high JSC in single-nanowire solar cells显示文摘Single-.nanowire solar cells with a unique light-concentration property are expected to exceed the Shockley-Queisser limit.The architecture of single nanowire is an important factor to regulate its optical performance.We designed a trilobal silicon nanowire(SiNW)with two cquivalent scales that possesses superior light-absorption efficiency in the whole wavelength range and shows good tolerance for incident angle.The electric field distribution in this geometry is concentrated in the blade with small equivalent scale and pivot with large equivalent scale,respectively,in the short wavelength range and long wavelength range.Corresponding good light absorption of trilobal SiNW in the two wavelength ranges leads to stronger total light absorption capacity than that of cylindrical SiNW.Trilobal single nanowire solar cells can obtain a short-circuit current density(JSC)of 647 mA·cm^2,which provides a new choice for designing single nanowire with excellent light-capture capability. | ZHONGLIANG GAO GUILU Lin YUPENG ZHENG NA SANG YINGFENG LI LEI CHEN MEICHENG LI | 2020 | Photonics Research2020，8，6： | 2 |
| 4 | Electromagnetic retarded interaction and symmetry violation of time reversal in high order stimulated radiation and absorption processes of light显示文摘It has been proved that when the retarded effect (or multiple moment effect) of radiation fields is taken into account,the high order stimulated radiation and stimulated absorption probabilities of light are not the same so that time reversal symmetry would be violated,though the Hamiltonian of electromagnetic interaction is still unchanged under time reversal. The reason to cause time reversal symmetry violation is that certain filial or partial transition processes of bound atoms are forbidden or cannot be achieved due to the law of energy conservation and the special states of atoms themselves. These restrictions would cause the symmetry violation of time reversal of other filial or partial transition processes which can be actualized really. The symmetry violation is also relative to the asymmetry of initial states of bound atoms before and after time reversal. For the electromagnetic interaction between non-bound atoms and radiation field,there is no such kind of symmetry violation of time reversal. In this way,the current formula on the parameters of stimulated radiation and absorption of light with time reversal sym-metry should be revised. A more reliable foundation can be established for the theories of laser and nonlinear optics in which non-equilibrium processes are in-volved. | MEI XiaoChun Department of Physics,Fuzhou University,Fuzhou 350025,China | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，3： | 2 |
| 5 | Electronic, Thermal Expanding, and Optical Absorption Properties of Transition Metal Dichalcogenides: A First-principles Study显示文摘A comprehensive investigation was made on the electronic structure, thermal expansion coefficient and light absorption spectrum of total six transition metal dichalcogenides(TMDs) compounds with formula of MX_2(M=Mo, W, Cr, X=S, Se). First, an indirect-direct band gap transition from bulk to singlelayer was declared for all the six compounds. Moreover, the detailed lattice constants and thermal expansion coefficients provided in the paper were the key information for designing MX_2-based field effect transistors. Finally, the calculated optical absorption spectra demonstrate that these compounds can effectively utilize solar energy and are good photo catalyst candidates. All these present findings will benefit the design of new generation of novel two-dimensional materials. | 张会 吴延斌 | 2018 | Journal of Wuhan University of Technology(Materials Science)2018，33，6： | 1 |
| 6 | A facile method to fabricate high-quality perovskite nanocrystals based on single crystal powder显示文摘Although great advancements have been successfully achieved in ligand-assisted reprecipitation strategy(LARP)towards lead halide perovskite nano crystals(NCs)syn thesis,it still remains challe nging to develop bright and stable iodide-based perovskite NC via facile LARP.Herein,striki ngly bright MAPbl3 NCs with photoluminesce nee qua ntum yield(PLQY)as high as 79%are synthesized via replacing the raw material(MAI and Pbh)with MAPbl3 crystal powder during LARP procedure.It has been found that crystal powder derived MAPbl3 NCs are more iodide-rich compared with that based on raw material,which is favorable to passivate the surface trap state.Accordingly,femtosecond transient absorption spectroscopies and space charge limited current measurements have corroborated that the trap density is much less in crystal powder resulted MAPbl3 NCs.Further analyses indicate stronger solvation with reduced precursor colloid size has been observed in crystal powder derived precursor solution probably due to the formation of MAPbl3-DMF.This work has provided a facile but valid method to enhance the photoluminesce nee of perovskite NC via modulati ng the beginning precursor solution. | Jin-Feng Liao Yi-Xin Chen Jun-Hua Wei Ya-Ting Cai Xu-Dong Wang Yang-Fan Xu Dai-Bin Kuang | 2019 | Nano Research2019，12，10： | 1 |
| 7 | Light Absorption Characteristics of Multi-Morphology FeS_2 Granular Synthesized Under Hydrothermal Conditions显示文摘A. Ennaoui proposed that FeS2 owns an appropriate band gap (0.95 eV) and large absorption coefficient, it can be used for solar materials. People had studied the light absorption characteristics of the FeS2 prepared by different methods, and believed that crystal grain size, defect density and crystalline quality are important factors that affect the light absorption properties. In order to take a depth study of the absorption properties, the research group has taken a study on light absorption characteristics of natural pyrite, the existence of Co, Ni impurities results in lower band gap and conversion efficiency. | LIU Jia HUANG Fei LI Guanglu MENG Lin YU Haoran CHEN Yinghua WANG Weifeng GAO Shang GAO Wenyuan | 2013 | 矿物学报2013，33，S1： | 0 |
| 8 | Concept to devices:from plasmonic light trapping to upscaled plasmonic solar modules[Invited]显示文摘The concept of using plasmonic nanostructures to manage light in solar cells has offered an unprecedented potential for dramatically increased solar energy conversion efficiency that breaks the previously predicated efficiency limit.In the past decade,intensive research efforts have been focused on this field.However,nanoplasmonic solar cells still remained in the laboratory level.To facilitate the transformation of the nanoplasmonic solar cell concept to a viable high-efficiency technology solution for the solar industry,it is essential to address key fundamental as well as practical challenges including the detrimental absorption of metallic nanostructures,narrow-band absorption enhancement in the active layer,the high cost and scarcity of noble metals,and the expensive and complicated plasmonic nanomaterial fabrication and integration methods.In this paper,after a brief review of our main results in nanoplasmonic solar cells,we present our strategies for using innovative photonic methods to overcome these challenges and demonstrate a large-area(173 cm2)broadband plasmonic thin-film solar minimodule with an efficiency of 9.5%resulting from the enhanced plasmonic light scattering enabled by silver lumpy nanoparticles with an ultralow nanoparticle coverage density of 5%. | Baohua Jia Xi Chen Jhantu Kumar Saha Qi Qiao Yongqian Wang Zhengrong Shi Min Gu | 2013 | Photonics Research2013，1，1： | 0 |
| 9 | Electronic Structure and Optical-absorption Properties of C-, N-, and S-doped BiOCl: the First-principles Calculations显示文摘Impurity formation energy, electronic structure, and photocatalytic properties of C-, N-, or S-doped BiOCl are investigated by density-functional theory plus U calculations(DFT + U). Results show that the doping effect of S is better than that of C or N on the tunable photocatalytic activities of BiOCl. At low concentration, S-doped BiOCl systems are the most stable under Bi-rich growth conditions because of their lower impurity-formation energy. Compared with the electronic structures of S-doped BiOCl, C-or N-doped BiOCl have relatively deeper impurity energy levels appearing in their band gap(except Bi_(36)O_(35)NCl_(36)), which may act as photogenerated carrier-recombination centers and reduce photocatalytic activity. At high concentration, S is substituted on the O lattice site system, whereas some S 3p states mix with the valence band; this mixture leads to an obvious band-gap decrease and continuum-state formation above the valence-band edge of BiOCl. Such activity is advantageous to photochemical catalysis response. Compared with pure Bi OCl and a low-concentration S-doped system, a high-concentration S-doped system shows an obvious redshift on the absorption edge and has better photocatalytic O_2 evolution performance. | 姚文志 姚建斌 张霞 马亚豪 | 2019 | Chinese Journal of Structural Chemistry2019，38，4： | 0 |
| 10 | Experiments and analysis of gold disk targets irradiated by smoothing beams of Xingguang Ⅱ facilities with 350 nm wavelength显示文摘Gold disk targets were irradiated using focusing and beam smoothing methods on Xingguang (XG-Ⅱ) laser facilities with 350 nm wavelength,0.6 ns pulse width and 20-80 Joules energies. Laser absorption,light scattering and X-ray conversion were experimentally investigated. The experimental results showed that laser ab-sorption and scattered light were about 90% and 10%,respectively,under focusing irradiation,but the laser absorption increased 5%-10% and the scattered light about 1% under the condition of beam smoothing. Compared with the case of fo-cusing irradiation,the laser absorption was effectively improved and the scattered light remarkably dropped under uniform irradiation; then due to the decrease in laser intensity,X-ray conversion increased. This is highly advantageous to the in-ertial confinement fusion. However,X-ray conversion mechanism basically did not change and X-ray conversion efficiency under beam smoothing and focusing irra-diation was basically the same. | JIANG ShaoEn,ZHANG BaoHan,LIU ShenYe,YANG JiaMin,SUN KeXu,HUANG TianXuan,DING YongKun & ZHENG ZhiJian National Key Laboratory of Laser Fusion,Laser Fusion Research Center,Mianyang 621900,China | 2007 | Science China(Physics,Mechanics & Astronomy)2007，50，6： | 0 |
| 11 | In Situ Preparation and Analysis of Bimetal Co?doped Mesoporous Graphitic Carbon Nitride with Enhanced Photocatalytic Activity显示文摘A novel photocatalyst of mesoporous graphitic carbon nitride(g-C_3N_4) co-doped with Co and Mo(Co/Mo-MCN) has been one-pot synthesized via a simple template-free method; cobalt chloride and molybdenum disulfide were used as the Co and Mo sources, respectively. The characterization results evidently indicate that molybdenum disulfide functions as Mo sources to incorporate Mo atoms in the framework of g-C_3N_4 and as a catalyst for promoting the decomposition of g-C_3N_4, resulting in the creation of mesopores. The obtained Co/Mo-MCN exhibited a significant enhancement of the photocatalytic activity in H_2 evolution(8.6 times) and Rhodamine B degradation(10.1 times) under visible light irradiation compared to pristine g-C_3N_4. Furthermore, density functional theory calculations were applied to further understand the photocatalytic enhancement mechanism of the optical absorption properties at the atomic level after Co-or Mo-doping. Finite-di erence time-domain simulations were performed to evaluate the e ect of the mesopore structures on the light absorption capability. The results revealed that both the bimetal doping and the mesoporous architectures resulted in an enhanced optical absorption; this phenomenon was considered to have played a critical role in the improvement in the photocatalytic performance of Co/Mo-MCN. | Wanbao Wu Zhaohui Ruan Junzhuo Li Yudong Li Yanqiu Jiang Xianzhu Xu Defeng Li Yuan Yuan Kaifeng Lin | 2019 | Nano-Micro Letters2019，11，1： | 0 |
| 12 | Innovative Light Therapy:1.Biological Effectiveness of Polychromatic Polarized Light Transmitted through Interference,Absorption and Fullerene Filters显示文摘On the formalin test model,we studied the effect of polychromatic polarized light of the BIOPTRON device equipped with interference filters(red,blue,green)on pain and non-painful behavioral reactions of laboratory animals with a locus of tonic/inflammatory pain.The study(the same for all light variants)was performed on adult white laboratory mice-males weighing 27-32 g.The pain center was caused by subcutaneous injection of 0.3μL of 5%formalin solution in the dorsum of the left hind limb.The intensity of the pain was judged by the duration of the pain reaction(licking of the pain locus)for consecutive 10 minutes and for the entire observation period(60 minutes).The light source was the BIOPTRON-compact,equipped with a halogen lamp and a Brewster polarizer.Light was applied to the pain locus immediately after formalin injection for 10 minutes.The distance from the filter to the skin surface was 5 cm,and the diameter of the light spot was reduced to 5 mm.The control was a group of animals with a similar pain effect,but without light application.Processing of experimental data was carried out on a computer using special programs.It was found that polychromatic light obtained after conversion by interference filters as monochromatic red,blue or green statistically significantly(p<0.001;p<0.05;p<0.05)reduced the pain.The duration of the pain response during 60 minutes of observation reduced to 341±93 s(red filter),435.4±37.1 s(blue filter)or 343.6±65.8 s(green filter)versus 566.2±47 s in the control(without light application).If the duration of the pain response in the control was taken as 100%,then after 10 minutes of exposure to the pain area with monochromatic polarized light obtained after conversion by interference filters,the pain was 60%,77%and 61%,respectively.Based on these data,the red and green filters turned out to be the most effective,and the least—blue.The duration of the pain response in the group that received a 10-minute exposure to the locus of pain by light passing through the fullerene filter was 56.5%of the magnitude of the similar reaction in the control(without light application).There were found no significant differences between the analgesic effects of interference and absorption filters of the corresponding color.Application of red filters gave 40%of analgesia(interference)and 46%(absorption).For the corresponding pair of blue filters,pain relief was 23 and 31%,and green—39 and 36%.Analgesia from the fullerene filter when applying it to the pain locus was 43.5%.In case of application different variants of light for clinical purposes,it is advisable to take into account both the manifestations of their biological effectiveness,proven on the pain model,and additional features determined by the original wave ranges,polarization and light power density. | Sergiy A.Gulyar Zynaida A.Tamarova | 2020 | Journal of US-China Medical Science2020，17，1： | 0 |
| 13 | Using monochromatic light to measure attenuation length of liquid scintillator solvent LAB显示文摘Linear alkylbenzene(LAB) will be used as solvent for the liquid scintillator in the central detector of Jiangmen Underground Neutrino Observatory. The sheer size of the detector imposes significant challenges and the necessity to further improve the optical transparency of high-quality LAB. In order to study high optical transparencies, we continuously improve our measurement setup and use monochromatic light to measure the attenuation lengths of LAB samples. Moreover, the effects of organic impurities on LAB samples are studied to understand their interaction mechanisms and further improve the optical transparency of LAB. | Rui Zhang De-Wen Cao Chang-Wei Loh You-Hang Liu Fang-Liang Wu Jia-Liang Zhang Ming Qi | 2019 | Nuclear Science and Techniques2019，30，2： | 0 |
| 14 | Infrared Studies on Shock-loading Jilin Meteorite显示文摘The shock wave techniques which were first come into use investigated the mid-infrared spectra of shock-loading Jilia meteorite for shock recovery specimen. Through the structural variation of the shocked mineral in Jilin meteorite the chondritic shock metamorphism is studied. The results of the infrared spectra of shock recovery specimen show that the characteristic IR bands of polymorphs, phase transformation and high-pressure phase for both olivine and pyroxene almost were not found at the pressure over 12 GPa. The diaplectic glass occurs at the pressure between 53.0 and 77.5 GPa. The absorption band at 1740 cm-1 is assigned to the C = O stretching vibration as a sign of diaplectic glass occurring. The IR of recovery specimen has revealed that the vitreous materials in unshocked Jilin meteorites were primary remainders of meteoritic parent. | 林文祝 刘高魁 | 1993 | Science China Chemistry1993，36，5： | 0 |
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