检索结果-南通市图书馆

Polar solvent induced in-situ self-assembly and oxygen vacancies on Bi_(2)MoO_(6)for enhanced photocatalytic degradation of tetracycline

引用

Nano Research 2024年第6期17卷 4951-4960页

作者： Fangyan liu Dongyue Su Weizhen liu baiquan liu Chuan liu Hong Wang Mengye Wang State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and TechnologySchool of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510275China School of Materials Sun Yat-Sen UniversityShenzhen 518107China School of Environment and Energy Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and RecyclingSouth China University of TechnologyGuangzhou 510006China

It has been proved to be an effective route to efficiently ameliorate photocatalytic performance of catalysts via designing three-dimensional(3D)hierarchical nanostructures and constructing oxygen vacancies(VOs).However,controlling the self-assembly of organization into 3D hierarchical nanostructures while introducing VOs in photocatalysts remains a ***,we reported an ethylene glycol(EG)mediated approach to craft 3D hydrangea-structure Bi_(2)MoO_(6)with VOs for efficient photocatalytic degradation of *** manipulating the EG concentration during the fabrication process,the influence of EG concentration on the Bi_(2)MoO_(6)structure was systematically *** could promote the self-assembly of Bi_(2)MoO_(6)nanosheets to form a 3D hierarchical *** with 2D nanoplates,3D hierarchical architecture enhanced the surface area and the amount of active sites of Bi_(2)MoO_(6).In addition,the reduction effect of EG on metallic oxide enabled the generation of VOs in Bi_(2)MoO_(6).The VOs adjusted the electronic structure of Bi_(2)MoO_(6),which not only enhanced the light harvesting,but also facilitated the simultaneous utilization of photo-induced electrons and holes to form reactive oxygen species(·O2−and·OH)for the efficient tetracycline decomposition.3D Bi_(2)MoO_(6)hydrangea with VOs achieved a 79.4%removal efficiency of tetracycline after 75 *** work provides a simple yet robust EG-mediated strategy,which not only promotes the self-assembly of nano-catalysts into 3D hierarchical architectures,but also crafts tunable VOs for highly efficient photocatalysis.

关键词： three-dimensional(3D)hierarchical nanostructures tunable oxygen vacancies ethylene glycol(EG)-mediated strategy bismuth molybdate photocatalytic degradation tetracycline

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Regulating Charge and Exciton Distribution in High-Performance Hybrid White Organic Light-Emitting Diodes with n-Type Interlayer Switch

引用

Nano-Micro Letters 2017年第4期9卷 3-10页

作者： Dongxiang Luo Yanfeng Yang Ye Xiao Yu Zhao Yibin Yang baiquan liu School of Materials and Energy Guangdong University of Technology Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology LUMINOUS Center of Excellence for Semiconductor Lighting and Displays School of Electrical and Electronic Engineering Nanyang Technological University

The interlayer(IL) plays a vital role in hybrid white organic light-emitting diodes(WOLEDs); however,only a negligible amount of attention has been given to n-type ILs. Herein, the n-type IL, for the first time,has been demonstrated to achieve a high efficiency, high color rendering index(CRI), and low voltage *** device exhibits a maximum total efficiency of 41.5 lm W^(-1), the highest among hybrid WOLEDs with n-type ILs. In addition, high CRIs(80–88) at practical luminances(C1000 cd m^(-2)) have been obtained, satisfying the demand for indoor lighting. Remarkably, a CRI of 88 is the highest among hybrid WOLEDs. Moreover, the device exhibits low voltages, with a turn-on voltage of only 2.5 V([1 cd m^(-2)), which is the lowest among hybrid WOLEDs. The intrinsic working mechanism of the device has also been explored; in particular, the role of n-type ILs in regulating the distribution of charges and excitons has been unveiled. The findings demonstrate that the introduction of n-type ILs is effective in developing high-performance hybrid WOLEDs.

关键词： White light Hybrid Interlayer Color rendering index Organic light-emitting diodes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Doping-free tandem white organic light-emitting diodes

引用

Science Bulletin 2017年第17期62卷 1193-1200页

作者： baiquan liu Lei Wang Hong Tao Miao Xu Jianhua Zou Honglong Ning Junbiao Peng Yong Cao Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyCuangzhou 510640China

Tandem white organic light-emitting diodes(WOLEDs) are of great research interest since they can greatly boost the performance compared with the single-unit counterparts. However, their structures are more complicated than those of single-unit OLEDs. Besides, to achieve high performance, the doping technology is required to tandem OLEDs, particularly for tandem WOLEDs, further complicating the structures. Herein, doping-free tandem WOLEDs, for the first time, have been demonstrated. By managing an effective doping-free charge generation layer to interconnect doping-free emitting layers/charge transport layers, high-performance doping-free tandem WOLEDs have been developed. The blueyellow device accomplishes the simplified structure/short fabrication time/reduced cost/high efficiency/low efficiency roll-off/low voltage/high luminance trade-off, which cannot be achieved by previous tandem WOLEDs. Remarkably, the efficiency(81.2 cd A^(-1)) is ~2-fold higher than the highest efficiency of previous doping-free WOLEDs and even higher than those of some best doping tandem WOLEDs. The maximum luminance is 44,886 cd m^(-2), which is the highest for doping-free ***, the blue-red device can exhibit a color rendering index(CRI) of 67, which is even higher than that of some representative three-color tandem WOLEDs. Such findings may not only represent a significant step for doping-free WOLEDs, but unlock a novel avenue that doping-free tandem WOLEDs are promising to achieve the simplicity and high performance trade-off.

关键词： Organic light-emitting diodes Doping-flee Tandem White Efficiency

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Boosting the efficiency of quantum dot–sensitized solar cells over 15%through light-harvesting enhancement

引用

SusMat 2023年第4期3卷 543-554页

作者： Han Song Haoran Mu Jian Yuan baiquan liu Gongxun Bai Shenghuang Lin Songshan Lake Materials Laboratory DongguanGuangdongChina Institute of Physics Chinese Academy of ScienceBeijingChina School of Electronics and Information Technology Sun Yat-Sen UniversityGuangzhouGuangdongChina Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province China Jiliang UniversityHangzhouChina

How to improve the capacity of light-harvesting is still an important point and essential strategy for the assembling of high-efficiency quantum dot–sensitized solar cells(QDSCs).A believable approach is to implant new light absorption materials into QDSCs to stimulate the charge ***,the few-layer black phosphorus quantum dots(BPQDs)are synthesized by electrochemical intercalation technology using bulk BP as *** the obtained BPQDs are deposited onto the surface of Zn–Cu–In–S–Se(ZCISSe)QD-sensitized TiO2 substrate to serve as another light-harvesting material for the first *** experimental results have shown that BPQDs can not only increase the absorption intensity by photoanode but also reduce unnecessary charge recombination processes at the interface of photoanode/*** optimizing the size and deposition process of BPQDs,the champion power conversion efficiency of ZCISSe QDSCs is increased to 15.66%(26.88 mA/cm2,Voc=0.816 V,fill factor[FF]=0.714)when compared with the original value of 14.11%(Jsc=25.41 mA/cm^(2),Voc=0.779 V,FF=0.713).

关键词： black phosphorus quantum dots high-efficiency light-harvesting quantum dot–sensitized solar cells

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The effect of spacer in hybrid white organic light emitting diodes

引用

Chinese Science Bulletin 2014年第25期59卷 3090-3097页

作者： baiquan liu Miao Xu Hong Tao Yueju Su Dongyu Gao Jianhua Zou Linfeng Lan Junbiao Peng Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology New Vision Opto-Electronic Technology Co. Ltd

Two kinds of highly efficient,bright hybrid white organic light emitting diodes have been fabricated by utilizing ambipolar material 4,4-N,N-dicarbazolebiphenyl(CBP)and unipolar material N,N0-di(naphthalene-1-yl)-N,N0-diphenyl-benzidine(NPB)as the spacer,*** adjusting the thickness of spacers together with effectively utilizing combinations of exciton-harnessed orangephosphorescence/blue-fluorescence,the current efficiency of optimal device with CBP spacer and device with NPB spacer are 31.0 and 38.9 cd/A,the maximum power efficiency are 23.9 and 29.1 lm/W,the maximum brightness are 87,249 and 75,501 cd/m2,and the Commission Internationale de l’Eclairage(CIE)coordinates are(0.42,0.43)and(0.47,0.44)at a voltage of 11 V,***,systematic investigations focused on the effects of spacers on device performance have been *** virtue of the multifunctional spacer,energy transfer between the phosphorescent and fluorescent emitters can be avoided while the carriers still can pass through this spacer bridge,which is important to realize such high device *** addition,a novel concept that both ambipolar materials and unipolar materials can be the promising candidates for spacers has been proposed if the thickness of spacers with high triplet energy is optimized.

关键词：有机发光二极管混合隔离物极性材料器件性能能量转移蓝色荧光有效利用

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Very-High Color Rendering Index Hybrid White Organic Light-Emitting Diodes with Double Emitting Nanolayers

引用

Nano-Micro Letters 2014年第4期6卷 335-339页

作者： baiquan liu Miao Xu Lei Wang Hong Tao Yueju Su Dongyu Gao Linfeng Lan Jianhua Zou Junbiao Peng Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology New Vision Opto-Electronic Technology Co. Ltd

A very-high color rendering index white organic light-emitting diode(WOLED) based on a simple structure was successfully fabricated. The optimized device exhibits a maximum total efficiency of 13.1 and 5.4 lm/W at 1,000 cd/m2. A peak color rendering index of 90 and a relatively stable color during a wide range of luminance were obtained. In addition, it was demonstrated that the 4,40,400-tri(9-carbazoyl) triphenylamine host influenced strongly the performance of this *** results may be beneficial to the design of both material and device architecture for high-performance WOLED.

关键词： White light Hybrid Color rendering index Organic light-emitting diodes Double emitting nanolayers

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Study on Accumulation Rule of Carbohydrates in Soybean(Glycine max(L.) Merrill)

引用

Journal of Northeast Agricultural University(English Edition) 2009年第1期16卷 1-4页

作者： SONG baiquan liu lijun DONG Shoukun ZU Wei SUN Congshu College of Agriculture Northeast Agricultural University Harbin 150030 China

Three soybean cultivars, Hefeng25 （HF25）, Suinongl4 （SN14） and Longxuanl （LX1） were used as materials and the accumulation features of carbohydrates were studied in leaves and stems. The results showed that the soluble sugar content in leaves and stems appeared the same trend of higher-lower-higher in three varieties. The changes of sucrose content in leaves appeared the same rule with that of soluble sugar, that is higher-lower-higher, while presented a rising trend in stems. The content of starch in leaves varied as a change of double apexes. The content of starch in stems appeared a change of single apex. In the same stage, there were some differences among carbohydrates. The content of soluble sugar and sucrose in SN14 was higher, and the starch content was lower.

关键词： soybean soluble sugar sucrose starch

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

胶体量子阱发光二极管的研究进展

引用

物理化学学报 2022年第12期38卷 168-190页

作者：刘佰全高桦宇胡素娟刘川中山大学电子与信息工程学院广州510275

胶体量子阱(CQW)由于具有高色纯度、高光致发光量子效率、光色可调等优异的光电性能,近年来成为一种新型的光电材料,广泛用于制备发光二极管、激光、探测器、太阳能电池等半导体器件。其中,基于CQW的发光二极管(CQWLED)因为具备极窄的... 详细信息

胶体量子阱(CQW)由于具有高色纯度、高光致发光量子效率、光色可调等优异的光电性能,近年来成为一种新型的光电材料,广泛用于制备发光二极管、激光、探测器、太阳能电池等半导体器件。其中,基于CQW的发光二极管(CQWLED)因为具备极窄的光谱、极佳的色纯度、高效率、可溶液加工、可柔性化等优点,在显示和照明等领域展现出重要应用前景,受到学术界和工业界的广泛重视而成为研究热点。本文首先介绍了CQW-LED中的一些基本概念,包括CQW材料特性、LED器件结构、发光机理等;然后从CQW材料种类的角度出发,阐述了基于单核型、核/冠型、核/壳型、复杂异质结型、以及杂质掺杂型CQW-LED近年来的研究进展,并结合我们研究团队最近的工作详细的介绍了实现高性能CQW-LED的方法,包括对材料选取、设计策略、器件结构、器件性能、工作机理以及发光过程的分析;接着,介绍了CQW-LED的集成应用;最后探讨了CQW-LED目前面临的挑战及其未来的发展机遇。

关键词：发光二极管胶体量子阱显示照明柔性

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

基于变尺度优化方法的快速神经网络学习算法研究

引用

系统仿真学报 1997年第1期9卷 34-39页

作者：王耀南湖南大学电气工程系

本文提出了一种基于变尺度优化方法的多层前向神经网快速学习算法，实验结果表明，这种算法对于加快网络的收敛速度有着显著成效。

关键词：人工神经网络学习算法变尺度优化法

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Al_2O_3-ZrO_2系熔融材料非平衡态显微结构

引用

硅酸盐学报 2007年第1期35卷 69-74页

作者：高振昕周宁生贺中央刘百宽梁兰芳洛阳耐火材料研究院河南洛阳471039 河南科技大学材料学院河南洛阳471039 濮耐高温材料有限公司河南濮阳457100 天源炉材化工有限公司辽宁营口115100

含75%质量分数Al2O3的Al2O3–ZrO2系熔融材料在缓慢冷却时,正常的显微结构由粗粒状初晶刚玉和组成少许波动的Al2O3–ZrO2共晶体组成。依冷凝速率梯度不同,该组成样品可以获得显微结构渐变的熔融材料。较快冷凝的同组成样品则呈微细的、... 详细信息

含75%质量分数Al2O3的Al2O3–ZrO2系熔融材料在缓慢冷却时,正常的显微结构由粗粒状初晶刚玉和组成少许波动的Al2O3–ZrO2共晶体组成。依冷凝速率梯度不同,该组成样品可以获得显微结构渐变的熔融材料。较快冷凝的同组成样品则呈微细的、均匀的两相结构,间或有少量不定组成的偏共晶。同组成的熔体与水冷钢容器接触激冷时,相当于淬火,只析出尺寸为5～10μm的立方体和柱状刚玉以及小于2μm的球状氧化锆晶体,而不存在共晶。以上表明:熔体不沿相图所示析晶路线形成共晶,而是形成了非平衡态的相组合。在激冷的样品中,ZrO2以立方相和四方相为主。缓慢冷凝的自由表面,析出自形刚玉,晶体尺寸达30～40μm,而<2μmZrO2呈微晶粒填充于其间。

关键词：氧化铝-氧化锆熔融材料非平衡态显微结构共晶氧化锆相变

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：