期刊：
Energy and Environmental Science,2014年7(8):2619-2623 ISSN：1754-5692
通讯作者：
Huang, JS
作者机构：
[Xiao, Zhengguo; Huang, Jinsong; Bi, Cheng; Shao, Yuchuan; Dong, Qingfeng; Yuan, Yongbo; Wang, Qi] Department of Mechanical and Materials Engineering, Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln NE 68588-0656, United States;[Gao, Yongli] Institute of Super-microstructure and Ultrafast Process in Advanced Materials (ISUPAM), Central South University, Changsha Hunan 410083, China;[Wang, Chenggong; Gao, Yongli] Department of Physics and Astronomy, University of Rochester, Rochester NY 14627, United States
通讯机构：
[Huang, Jinsong] Univ Nebraska, Nebraska Ctr Mat & Nanosci, Dept Mech & Mat Engn, Lincoln, NE 68588 USA.
关键词：
Fill factor - Low temperatures - One-sun illumination - Perovskite films - Photovoltaic devices - Solution process - Solution-processed - Stacking layers
作者机构：
[Ecker, Benjamin R.; Gao, Yongli; Wang, Congcong] Department of Physics and Astronomy, University of Rochester, Rochester, NY, 14627-0171, United States;[Chuirazzi, William; Cao, Lei; Mulligan, Padhraic] Nuclear Engineering Program, Department of Mechanical and Aerospace Engineering, Ohio State University, Columbus, OH, 43210, United States;[Gao, Yongli] Institute of Super-microstructure and Ultrafast Process in Advanced Materials (ISUPAM), Central South University, Changsha, Hunan, 410083, China;[Huang, Jinsong; Wei, Haotong; Fang, Yanjun] Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NB, 68588, United States;[Fang, Hong-Hua; Loi, Maria Antonietta] Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, AG Groningen, 9747, Netherlands
通讯机构：
[Huang, Jinsong] Univ Nebraska, Dept Mech & Mat Engn, Lincoln, NE 68588 USA.;[Cao, Lei] Ohio State Univ, Dept Mech & Aerosp Engn, Nucl Engn Program, Columbus, OH 43210 USA.
作者机构：
[Chen, Changxin; Antaris, Alexander L.; Tao, Zhimin; Hong, Guosong; Wu, Di; Diao, Shuo; Wu, Justin Z.; Dai, Hongjie; Zhang, Xiaodong; Fukunaga, Chihiro; Zhang, Bo] Stanford Univ, Dept Chem, Stanford, CA 94305 USA.;[He, Yuehui; Liu, Bo; Zou, Yingping] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China.;[Yuan, Jun; Liu, Bo; Zou, Yingping] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Cheng, Kai] Stanford Univ, Sch Med, Dept Radiol, Stanford, CA 94305 USA.;[Cheng, Kai] Stanford Univ, Sch Med, Bio X Program, Stanford, CA 94305 USA.
通讯机构：
[Zou, Yingping] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
摘要：
In vivo fluorescence imaging in the second near-infrared window (1.0-1.7 mu m) can afford deep tissue penetration and high spatial resolution, owing to the reduced scattering of long-wavelength photons. Here we synthesize a series of low-bandgap donor/acceptor copolymers with tunable emission wavelengths of 1,050-1,350 nm in this window. Non-covalent functionalization with phospholipid-polyethylene glycol results in water-soluble and biocompatible polymeric nanoparticles, allowing for live cell molecular imaging at >1,000 nm with polymer fluorophores for the first time. Importantly, the high quantum yield of the polymer allows for in vivo, deep-tissue and ultrafast imaging of mouse arterial blood flow with an unprecedented frame rate of >25 frames per second. The high time-resolution results in spatially and time resolved imaging of the blood flow pattern in cardiogram waveform over a single cardiac cycle (similar to 200 ms) of a mouse, which has not been observed with fluorescence imaging in this window before.
作者机构：
[Li, Xue-Yong] School of Sciences, Hunan University of Technology, Zhuzhou, 412008, China;[Li, Hong-Jian; Li, Xue-Yong] School of Materials Science and Engineering, Central South University, Changsha, 410083, China;[Li, Xue-Yong; Wang, Zhi-Jun; Xiong, Zhi-Yong; Wang, Jun-Xi; Li, Hong-Jian; Xia, Hui; Yang, Bing-Chu] College of Physics Science and Technology, Central South University, Changsha, 410083, China
通讯机构：
[Li, Hong-Jian] Cent S Univ, Coll Phys Sci & Technol, Lusan Lu 8, Changsha 410083, Hunan, Peoples R China.
关键词：
Al-doped ZnO - Crystallization behavior - Dc magnetron sputtering - Direct current magnetron sputtering - Near band edge emissions - Photoluminescence spectrum - Structural and optical properties - Transmittance measurements
摘要：
Graphene has attracted much interest in both academia and industry. The challenge of making it semiconducting is crucial for applications in electronic devices. A promising approach is to reduce its physical size down to the nanometer scale. Here, we present the surface-assisted bottom-up fabrication of atomically precise armchair graphene nanoribbons (AGNRs) with predefined widths, namely 7-, 14- and 21-AGNRs, on Ag(111) as well as their spatially resolved width-dependent electronic structures. STM/STS measurements reveal their associated electron scattering patterns and the energy gaps over 1 eV. The mechanism to form such AGNRs is addressed based on the observed intermediate products. Our results provide new insights into the local properties of AGNRs, and have implications for the understanding of their electrical properties and potential applications.
作者：
Zhou, Lin;Xu, Kai;Zubair, Ahmad;Liao, Albert D.;Fang, Wenjing;Ouyang, Fangping;Lee, Yi-Hsien;Ueno, Keiji;Saito, Riichiro;Palacios, Tomas;Kong, Jing;Dresselhaus, Mildred S.
期刊：
Journal of the American Chemical Society,2015年137(37):11892-11895 ISSN：0002-7863
通讯作者：
Kong, J
作者机构：
[Zhou, Lin; Liao, Albert D.; Fang, Wenjing; Kong, Jing; Saito, Riichiro; Zubair, Ahmad; Xu, Kai; Dresselhaus, Mildred S.; Ouyang, Fangping] Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridgea, MA, United States;[Xu, Kai] State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, China;[Dresselhaus, Mildred S.] Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, United States;[Saito, Riichiro] Department of Physics, Tohoku University, Sendai, Japan;[Ouyang, Fangping] School of Physics and Electronics, State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
通讯机构：
[Kong, Jing] MIT, Dept Elect Engn & Comp Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
关键词：
Controlled synthesis - Crystalline structure - Emerging materials - Growth method - High quality - Large area synthesis - Large-scale applications - Molybdenum ditelluride
作者机构：
[Wang, Huishan; Wang, Haomin; Jiang, Mianheng; Wu, Tianru; Lu, Guangyuan; Xie, Xiaoming] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China.;[Wang, Huishan] Cent S Univ, Sch Phys & Elect, Changsha 410083, Hunan, Peoples R China.;[Jiang, Mianheng; Xie, Xiaoming] Shanghai Tech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China.;[Yuan, Qinghong] E China Normal Univ, Dept Phys, Shanghai 200241, Peoples R China.;[Xie, Xiaoming] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, 865 Changning Rd, Shanghai 200050, Peoples R China.
通讯机构：
[Xie, Xiaoming] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, 865 Changning Rd, Shanghai 200050, Peoples R China.
摘要：
Hexagonal boron nitride (h-BN) has attracted significant attention because of its superior properties as well as its potential as an ideal dielectric layer for graphene-based devices. The h-BN films obtained via chemical vapour deposition in earlier reports are always polycrystalline with small grains because of high nucleation density on substrates. Here we report the successful synthesis of large single-crystal h-BN grains on rational designed Cu-Ni alloy foils. It is found that the nucleation density can be greatly reduced to 60 per mm(2) by optimizing Ni ratio in substrates. The strategy enables the growth of single-crystal h-BN grains up to 7,500 mu m(2), approximately two orders larger than that in previous reports. This work not only provides valuable information for understanding h-BN nucleation and growth mechanisms, but also gives an effective alternative to exfoliated h-BN as a high-quality dielectric layer for large-scale nanoelectronic applications.
作者机构：
[Liu, Xinli; Wang, Shiliang; He, Yuehui; Yang, Taimin; Huang, Xiaolin; Huang, Han; Huang, Baiyun] School of Physics Science and Technology, State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China;[Zou, Jin; Wang, Shiliang; Wu, Yueqin] School of Mechanical and Mining Engineering, Centre for Microscopy and Microanalysis, University of Queensland, Brisbane, QLD 4072, Australia;[Hou, Lizhen] Institute of Physics and Information Science, Hunan Normal University, Changsha 410081, China
通讯机构：
[He, Yuehui] Cent S Univ, State Key Lab Powder Met, Sch Phys Sci & Technol, Changsha 410083, Peoples R China.
摘要：
Copper nanoparticles encapsulated by multi-layer graphene have been produced in large quantity (in grams) by metal-organic chemical vapor deposition at 600 degrees C with copper(II) acetylacetonate powders as precursor. The obtained graphene/copper shell/core nanoparticles were found to be formed by a novel coalescence mechanism that is quite different from the well-known dissolution-precipitation mechanism for some other graphene/metal (such as nickel, iron or cobalt) shell/core nanoparticles. Differential scanning calorimetry and thermogravimetric analyses showed that the copper nanoparticles encapsulated by multi-layer graphene with a thickness of 1-2 nm were thermally stable up to 165 degrees C in air atmosphere. Moreover, high-resolution transmission electron microscopy showed that the single-crystal copper nanoparticles, after exposure to air for 60 days, did not exhibit any sign of oxidation. (C) 2012 Elsevier Ltd. All rights reserved.
期刊：
CHEMICAL REVIEWS,2015年115(11):5570-5603 ISSN：0009-2665
通讯作者：
Yang, Junliang
作者机构：
[Yang, Junliang] Institute of Super-microstructure and Ultrafast Process in Advanced Materials, School of Physics and Electronics, Central South University, Changsha, Hunan, China;[Yang, Junliang] Hunan Key Laboratory for Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, Hunan, China;[Jones, Tim S.] Department of Chemistry, University of Warwick, Coventry, United Kingdom;[Yan, Donghang] State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China
通讯机构：
[Yang, Junliang] Cent S Univ, Sch Phys & Elect, Inst Super Microstruct & Ultrafast Proc Adv Mat, Changsha 410083, Hunan, Peoples R China.
摘要：
Molecular template growth (MTG) is a newly developed method for fabricating high-quality organic semiconductor thin films with controllable morphologies, molecular orientations, electronic structures, and interface properties to produce high-performance organic electronic and optoelectronic devices. There are several MTG methods with different molecular template materials and growth behaviors, including multiphenyl- and multithiophene-based MTG, and perylene-derivative MTG. Extensive research works have also revealed that Individualized methods for fabricating high-quality organic semiconductor thin films with controllable thin-film properties can be developed on the basis of specific understandings of the growth behaviors of organic semiconductor molecules and the desired device structures.
作者机构：
[Wee, Andrew Thye Shen; Han, Cheng; Wang, Rui; Chen, Wei; Lin, Jia Dan; Xiang, Du] Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore;[Wang, Li] Institute for Advanced Study, Department of Physics, Nanchang University, 999 Xue Fu Da Dao, Nanchang, China;[Zhang, Hua] School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;[Han, Cheng; Zhang, Xue-Ao; Qin, Shiqiao; Lin, Jia Dan; Wang, Fei] College of Science, National University of Defense Technology, Changsha 410073, China;[Chen, Wei; Wee, Andrew Thye Shen] Graphene Research Centre, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore
期刊：
Solid State Sciences,2009年11(8):1319-1324 ISSN：1293-2558
通讯作者：
Liu, X.(liuxh@mail.csu.edu.cn)
作者机构：
[Yan, Aiguo; Liu, Xiaohe; Li, Yongbo; Yi, Ran] Department of Inorganic Materials, Central South University, Changsha, Hunan 410083, China;[Liu, Xiaohe; Zhou, Kechao] State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, China;[Deng, Lianwen] School of Physics Science and Technology, Central South University, Changsha, 410083, China
通讯机构：
[Liu, Xiaohe] Cent S Univ, Dept Inorgan Mat, Changsha 410083, Hunan, Peoples R China.
作者机构：
[Mu, Haoran; Bao, Qiaoliang; Li, Pengfei; Lin, Shenghuang; Chen, Yao] Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, China;[Zhang, Han; Fan, Dianyuan] SZU-NUS Collaborative Innovation Centre for Optoelectronic Science and Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, China;[Pan, Chunxu; Wang, Zhongchi] School of Physical and Technology, Wuhan University, Wuhan, China;[Xiao, Si] Institute of Super-Microstructure and Ultrafast Process in Advanced Materials, School of Physics and Electronics, Hunan Key Laboratory for Super-Microstructure and Ultrafast Process, Central South University, Changsha, China;[Bao, Haifeng] School of Materials Science and Engineering, Wuhan Textile University, Wuhan, China
通讯机构：
[Bao, Qiaoliang] Soochow Univ, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Peoples R China.
关键词：
black phosphorus;electrospinning;polymer composites;pulsed lasers;saturable absorbers
摘要：
Black phosphorus (BP) is a very promising material for telecommunication due to its direct bandgap and strong resonant absorption in near‐infrared wavelength range. However, ultrafast nonlinear photonic applications relying on the ultrafast photocarrier dynamics as well as optical nonlinearity in black phosphorus remain unexplored. In this work, nonlinear optical properties of solution exfoliated BP are investigated and the usage of BP as a new saturable absorber for high energy pulse generation in fiber laser is demonstrated. In order to avoid the oxidization and degradation, BP is encapsulated by polymer matrix which is optically transparent in the spectrum range of interest to form a composite. Two fabrication approaches are demonstrated to produce BP‐polymer composite films which are further incorporated into fiber laser cavity as nonlinear media. BP shows very fast carrier dynamics and BP‐polymer composite has a modulation depth of 10.6%. A highly stable Q‐switched pulse generation is achieved and the single pulse energy of 194 nJ is demonstrated. The ease of handling of such black phosphorus‐polymer composite thin films affords new opportunities for wider applications such as optical sensing, signal processing, and light modulation.
作者机构：
[Yuan, Yongbo; Huang, Jinsong; Shao, Yuchuan] Univ Nebraska, Dept Mech & Mat Engn, Lincoln, NE 68588 USA.;[Yuan, Yongbo] Cent S Univ, Sch Phys & Elect, Hunan Key Lab Super Microstruct & Ultrafast Proc, Changsha 410083, Hunan, Peoples R China.;[Huang, Jinsong] Univ N Carolina, Dept Appl Phys Sci, Chapel Hill, NC 27599 USA.;[Yan, Yanfa] Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA.;[Yan, Yanfa] Univ Toledo, Wright Ctr Photovolta Innovat & Commercializat, Toledo, OH 43606 USA.
通讯机构：
[Huang, Jinsong] Univ Nebraska, Dept Mech & Mat Engn, Lincoln, NE 68588 USA.
摘要：
New photovoltaic materials have been searched for in the past decades for clean and renewable solar energy conversion with an objective of reducing the levelized cost of electricity (that is, the unit price of electricity over the course of the device lifetime). An emerging family of semiconductor materials - organic-inorganic halide perovskites (OIHPs) - are the focus of the photovoltaic research community owing to their use of low cost, nature-abundant raw materials, low-temperature and scalable solution fabrication processes, and, in particular, the very high power conversion efficiencies that have been achieved within the short time of their development. In this Review, we summarize and critically assess the most recent advances in understanding the physical properties of both 3D and low-dimensional OIHPs that favour a small open-circuit voltage deficit and high power conversion efficiency. Several prominent topics in this field on the unique properties of OIHPs are surveyed, including defect physics, ferroelectricity, exciton dissociation processes, carrier recombination lifetime and photon recycling. The impact of ion migration on solar cell efficiency and stability are also critically analysed. Finally, we discuss the remaining challenges in the commercialization of OIHP photovoltaics.
期刊：
Journal of Physical Chemistry C,2008年112(31):12003-12007 ISSN：1932-7447
通讯作者：
Xu, H
作者机构：
[Wang, Huanyou; OuYang, Fangping; Xiao, Jin; Xu, Hui] School of Physics Science and Technology, Central South University, Changsha 410083, China;[Li, Zuanyi; Huang, Bing] Department of Physics, Tsinghua University, Beijing 100084, China
通讯机构：
[Xu, Hui] Cent S Univ, Sch Phys Sci & Technol, Changsha 410083, Peoples R China.
摘要：
Using the density functional theory, we have demonstrated the chemical functionalization of semiconducting graphene nanoribbons (GNRs) with Stone-Wales (SW) defects by carboxyl (COOH) groups. It is found that the geometrical structures and electronic properties of the GNRs changed significantly, and the electrical conductivity of the system could be considerably enhanced by monoadsorption and double adsorption of COOH, which sensitively depends upon the axial concentration of SW defects COOH pairs (SWDCPs). With the increase of the axial concentration of SWDCPs, the system would transform from semiconducting behavior to p-type metallic behavior. This fact makes GNRs a possible candidate for chemical sensors and nanoelectronic devices based on graphene nanoribbons.
期刊：
ACS Applied Materials and Interfaces,2014年6(13):10687-10695 ISSN：1944-8244
通讯作者：
Tang, J.(jtang@mail.hust.edu.cn)
作者机构：
[Liu, Xinsheng; Qin, Sikai; Xia, Zhe; Luo, Miao; Zhou, Ying; Tang, Jiang; Chen, Jie; Leng, Meiying; Xue, Ding-Jiang] Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technologyc, Wuhan 430074, Hubei, China;[Liu, Xinsheng; Qin, Sikai; Xia, Zhe; Luo, Miao; Zhou, Ying; Tang, Jiang; Chen, Jie; Leng, Meiying; Xue, Ding-Jiang] School of Optical and Electronic Information, Huazhong University of Science and Technologyc, Wuhan 430074, Hubei, China;[Niu, Dongmei; Lv, Lu; Huang, Han] Institute of Super-microstructure and Ultrafast Process in Advanced Materials, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, China
关键词：
Absorber material - Band position - Different substrates - Film deposition - Photovoltaic applications - Photovoltaic devices - Solar conversion efficiencies
作者机构：
[Gao, Yongli] Department of Physics and Astronomy, University of Rochester, Rochester, NY, United States;[Yang, Junliang; Hu, Qiao; Wu, Han; Gao, Yongli; Sun, Jia] Institute of Super-microstructure and Ultrafast Process in Advanced Materials, Hunan Key Laboratory for Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, Hunan, China;[Yang, Junliang; Yan, Donghang] State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
通讯机构：
[Gao, Yongli] Institute of Super-microstructure and Ultrafast Process in Advanced Materials, Hunan Key Laboratory for Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, Hunan, China. junliang. and Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA;[Hu, Qiao] Institute of Super-microstructure and Ultrafast Process in Advanced Materials, Hunan Key Laboratory for Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, Hunan, China. junliang.;[Yang, Junliang] Institute of Super-microstructure and Ultrafast Process in Advanced Materials, Hunan Key Laboratory for Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, Hunan, China. junliang. and State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
关键词：
Ambient environment - Gravure printing - Halide perovskites - Large scale techniques - Nanowire arrays - Organic-inorganic hybrid - Polyethylene terephthalates (PET) - Roll to Roll
