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Photoluminescence from Si_based SiN_xO_y films

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Chinese Science Bulletin 1998年第2期43卷 124-126页

作者： Liangsheng Liao Xiaobing Liu zuhong xiong Shuai Yuan Xiaoyuan Hou Fudan Univ State Key Lab Surface Phys Shanghai 200433 Peoples R China Fudan Univ TD Lee Phys Lab Shanghai 200433 Peoples R China Changsha Elect Power Univ Dept Phys Changsha 410077 Peoples R China

B++, C++, Si++, and As++ with dose of 5×10 16 cm -2 were implanted into SiN-xO-y films grown on crystalline silicon by plasma_enhanced chemical vapor deposition. The ion_implanted samples exhibit their photoluminescence with different intensities and different peak wavelengths after thermal annealing. Especially, the C++_implanted SiN-xO-y films show very intense photoluminescence at green_yellow color region.

关键词： silicon_based light_emitting materials photoluminescence ion implantation.

Atomistic insights into plasmon induced water splitting

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Science China(Physics,Mechanics & Astronomy) 2017年第2期60卷 87-88页

作者： LIU DongYu XIANG Jie CHEN YingBing ZANG KeKuan DENG JunQuan HU YeQian xiong zuhong School of Physical Science and Technology Southwest University Institute of Physics Chinese Academy of Sciences Beijing 100190 China

Photosynthesis supports the existence of life on earth. At its heart is a remarkable chemical reaction at the ambient condition： water splitting. Producing hydrogen by artificial photosynthesis has been considered as one way to potentially solve the world＇s ever-increasing energy demands [ 1 ]. In 1972, Fujishima and Honda [2] firstly realized photochemical splitting of water on TiO2 electrodes using UV light. In TiO2,

关键词：等离子体激元分裂原子论人工光合作用 TiO2电极水化学反应能源需求

Magnetic properties of perpendicularly orientated L1_0 FePt nanoparticles

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Chinese Science Bulletin 2010年第8期55卷 680-686页

作者： MO XiaoJing XIANG Hui LI GuoQing CHEN Peng xiong zuhong WANG JunZhong ISHIO ShunJi SMTO Hitoshi SHIMA ToshiYuki TAKANASHI KoKi School of Physics Science and Technology Southwestern University Chongqing 400715 China Faculty of Engineering and Resource Science Akita University Akita 010-8502 Japan Institute for Materials Research Tohoku University Sendai 980-8577 Japan

L10 FePt films were deposited on MgO (001) substrates heated to 700°C by magnetron *** by the misfit of lattice between film and substrate,strong (001) texture was *** film at nominal thickness t N=5 nm was composed of nanoparticles with a size of～70 nm,and showed a high coercivity of～105 kOe at 4.2 *** t N=～50 nm,as the film changed from discontinuous to continuous,the coercivity dropped about one order of *** simulation implies that the magnetization reversal is a vortex-like nuclear *** ideal coercivity of a separated single-domain L10 FePt nanoparticle with a size of 70 nm×70 nm×5 nm is～121 *** tells us that the experimental coercivity has nearly reached the limit of ideal single crystalline nanoparticles.

关键词：磁性纳米粒子合金薄膜 FePt 相机 MgO(001) 金纳米颗粒高矫顽力取向

Color-Tunable Hybrid White Organic Light-Emitting Diodes with Double Interlayers

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Optics and Photonics Journal 2017年第8期7卷 99-105页

作者： Chunhong Gao Ziyang xiong Fuxing Yu Xingjuan Ma Yue Zhang Xin Zeng zuhong xiong School of Physical Science and Technology MOE Key Laboratory on Luminescence and Real-Time Analysis Southwest University Chongqing China

An efficient color-tunable hybrid white organic light-emitting diode is demonstrated with double interlayers of 2,7-bis(carbazol-9-yl)-9,9-ditoylfluo- rene/2-(diphenylphosphoryl) spiroflu-orene (DMFL-CBP/SPPO1) inserted between blue fluorescent and yellow phosphorescent-emitting layers, and exhibits Commission Internationale de l’Eclairage (CIE1931) ranging from warm white (0.4368, 0.4497) to cool white (0.2781, 0.2896) with driving current density from 0.2 to 40 mA/cm2. The recombination of singlet and the triplet excitons in blue fluores-cent-emitting layer and yellow phosphorescent-emitting layer, respectively, can be modulated by both the thickness of these double interlayers and the applied current densities.

关键词： Hybrid White Organic Light-Emitting Diode Color-Tunable Singlet Exciton Triplet Exciton Phosphor

Influence of DCM dye doping on the magnetic field dependent electroluminescence in organic light emitting diodes

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Science China(Physics,Mechanics & Astronomy) 2010年第1期53卷 24-29页

作者： CHEN Ping, LEI YanLian, LIU Rong, ZHANG QiaoMing, ZHANG Yong & xiong zuhong School of Physical Science and Technology, MOE Key Laboratory on Luminescence and Real-Time Analysis, Southwest University, Chongqing 400715, China Southwest University School of Physical Science and Technology MOE Key Laboratory on Luminescence and Real-Time Analysis Chongqing China (GRID:grid.263906.8)

The DCM dye doped organic electroluminescence devices with structure of ITO/NPB/Alq 3 : DCM/Alq 3 /LiF/Al were fabricated. From 15 K to room temperature, the magnetic field dependent of electroluminescence (MEL) of devices was investigated. Our observations indicated that the MEL is composed of two effects in different regimes: a low field (0≤B≤40 mT) effect and a high field (B > 40 mT) effect. For undoped devices, the low field effect exhibits a rapid rising with the increasing field, and the high field effect shows a slow increase and gradually saturates at room temperature. For doped devices, the low field rapid increase is also present, whereas the high field effect displays a decrease with the increasing field. The larger the injection current is, the more apparent the high field decrease is. In addition, the doped device demonstrates less temperature dependence of the high field effect than undoped device, although the undoped devices also present high field decrease of electroluminescence at low temperatures (T≤150 K). Based on the energy level trapping effect due to dye doping and magnetic field modulated triplet exciton annihilation, the experimental results are carefully explained.

关键词： dye doping magnetic field dependent of electroluminescence energy level traps triplet exciton annihilation

成型和灼烧温度对垃圾衍生燃料灰渣理化特性的影响

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农业工程学报 2018年第8期34卷 214-219页

作者：黎涛熊祖鸿鲁敏谢森熊培培中国科学院广州能源研究所广州510640

以生活垃圾衍生燃料(refuse derived fuel,RDF)为研究对象,通过挤压成型的RDF与非成型的RDF在600~1 100℃条件下灼烧,所产生的灰渣进行质量、粒径、化学成分等特性进行分析,探索RDF灰渣随温度变化的规律以及潜在的应用价值。研究结果表... 详细信息

以生活垃圾衍生燃料(refuse derived fuel,RDF)为研究对象,通过挤压成型的RDF与非成型的RDF在600~1 100℃条件下灼烧,所产生的灰渣进行质量、粒径、化学成分等特性进行分析,探索RDF灰渣随温度变化的规律以及潜在的应用价值。研究结果表明,在1 000℃以下,RDF灰渣随着温度提高,灰分组分发生分解反应,主要是残余有机物、碳酸盐、硫酸盐的分解,灰渣粒径减小;当温度升至1 000℃以上,灰分组分发生化合反应,生成产物以复合硅酸盐为主,灰渣粒径增大甚至结块;灰渣在化学反应过程中,非金属元素C,Cl,S转化为气体化合物逸出主体,使灰渣质量减小;成型RDF灰渣晶体含量比非成型RDF高;成型RDF灰渣粒径比非成型RDF灰渣大。

关键词：垃圾温度燃烧灰渣理化特性成型颗粒

红荧烯发光器件中激子和激基复合物共同调控的系间窜越反常电流依赖性

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科学通报 2023年第18期68卷 2401-2410页

作者：汤仙童潘睿亨熊祖洪重庆邮电大学理学院重庆400065 西南大学物理科学与技术学院重庆400715

为进一步探究高效率红荧烯发光器件中的微观机制,本研究选用4,4′,4′-tris(N-3-methylphenyl-N-phenylamino)triphenylamine(m-MTDATA)作为空穴传输层兼发光层主体、bathocuproine(BCP)作为电子传输层,制备了不同掺杂浓度的红荧烯发光二极管,并在20~300 K温度范围测量了器件的电致发光(electroluminescence,EL)及其磁效应.作为对比,还制备了不掺杂的激基复合物型器件和激子型器件.实验发现,在所有温度下,器件1(掺杂浓度为1%)中,系间窜越(intersystem crossing,ISC)过程会随偏置电流的增大而增强,该性质与激基复合物和激子型器件中ISC过程的电流依赖性相反,被称为反常电流依赖性;器件2(掺杂浓度为3%)中,这种反常特性只存在于室温,在更低温度(<200 K)下消失;器件3(掺杂浓度为6%)中,任何温度下都不存在该反常现象.分析器件的能级结构和EL谱可知,ISC过程反常电流依赖性与多种激发态(包括激子和激基复合物)的共同调控作用紧密相关.深入分析器件中激发态间的能量转移和自旋翻转过程可知,大电流下,电场对三重激发态的解离作用抑制了激基复合物中反向系间窜越过程(reverse ISC,RISC)和红荧烯激子中的高能态RISC过程,从而增强了ISC过程.本研究有助于深入理解多种激发态共存体系中的微观演化过程.

关键词：红荧烯电致发光磁响应系间窜越过程激子激基复合物

垃圾衍生燃料的制备、热转化特性及应用研究进展

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化工进展 2022年第S01期41卷 132-140页

作者：房科靖熊祖鸿鲁敏黎涛陈勇中国科学院广州能源研究所广东广州510640 中国科学院可再生能源重点实验室广东广州510640 广东省新能源和可再生能源研究开发与应用重点实验室广东广州510640

垃圾衍生燃料(refuse derived fuel,RDF)是指从城市生活原生垃圾中分选出的若干类可燃固体废物,经过干燥、破碎、分选和成型等复杂工艺制成的一种固体燃料,由于具有方便运输和储存,较低的污染物排放量、排渣量和着火点,燃烧充分和稳定... 详细信息

垃圾衍生燃料(refuse derived fuel,RDF)是指从城市生活原生垃圾中分选出的若干类可燃固体废物,经过干燥、破碎、分选和成型等复杂工艺制成的一种固体燃料,由于具有方便运输和储存,较低的污染物排放量、排渣量和着火点,燃烧充分和稳定等特点,在国家“双碳”的背景下,RDF一跃成为替代化石燃料的最佳替代品之一,但大规模市场化应用过程中,面临着生产和制作成本高昂、投资利益主导和直燃式焚烧技术的成熟和国产化等问题。本文从RDF的制备工艺、热转化特性出发,到最终的市场化应用,介绍了RDF的制备工艺、简述了热转化特性,分析了阻碍RDF大规模市场化应用的原因,最后提出了未来推进RDF应用的三项措施:简化RDF生产工艺,降低制作成本;建立完善的RDF应用行业补贴体系;建立“减碳”奖励机制,以期为RDF的大规模市场化应用提供指导。

关键词：垃圾衍生燃料制备造粒热解气化循环流化床

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颗粒密度对垃圾衍生燃料燃烧特性的影响

农业工程学报 2017年第23期33卷 241-245页

作者：黎涛熊祖鸿房科靖鲁敏谢森熊培培中国科学院广州能源研究所广州510640

垃圾衍生燃料(RDF,refuse derived fuel)是垃圾焚烧发电的原料,该文研究RDF预加工的形态对其燃烧释放能量过程的影响。将RDF制备成不同密度等级的成型颗粒,通过热重、热值、灰分分析,同时参比与非成型的RDF和生物质秸秆燃料,观察RDF成... 详细信息

垃圾衍生燃料(RDF,refuse derived fuel)是垃圾焚烧发电的原料,该文研究RDF预加工的形态对其燃烧释放能量过程的影响。将RDF制备成不同密度等级的成型颗粒,通过热重、热值、灰分分析,同时参比与非成型的RDF和生物质秸秆燃料,观察RDF成型颗粒燃烧特性。研究结果表明,该组非成型RDF的着火点为234.0℃,3个最大失质量速率分别为6.30,2.21,0.53%min;高密度RDF的着火点为238.2℃,3个最大失质量速率分别为5.70,3.11,0.61%/min,表明较高密度RDF颗粒在燃烧过程中,着火点较高,燃烧速率较为均衡。该组高密度RDF比非成型RDF燃烧后的灰渣少6.7%,表明高密度RDF燃烧较为充分。在热值方面,方差显著性分析表明,RDF颗粒密度值对其燃烧产生的热值无明显影响。

关键词：垃圾燃烧生物质 RDF 密度灰分