学术报告-High efficiency thin film mobile power
报告人：FENGQUAN LIU, PH.D. Senior Member Technical Staff, Santa Clara, CA
题目：High efficiency thin film mobile power
Mobile devices are becoming main stream to dominate people’s life and the society. The power to support the mobile devices is critical to make the devices mobile. Current battery is not enough to support mobile devices in their active usage. Solar is a constant power resource. With the help of high efficiency thin film solar cell, solar power is a labile resource to be mobile power to support mobile devices.
In this talk, the highest mono-junction thin film solar cell with efficiency of 28.8% (one Sun) will be described. In manufacturing scale, the production and process of the solar cell and its module will illustrate its practical application of mobile power. The solar cell and its module are flexible to meet mobile power application in shape requirement. They are the highest efficiency of mono-junction solar module with lowest weight, suitable for mobile power application for consumer, space traveler, no-man aircraft etc.
主讲人: 姚彦教授 (Prof. Yan Yao)
报告题目：Rational Nanostructure Design for Efficient Energy Devices
姚彦教授现为休斯敦大学电气工程与计算机系教授， 2002年毕业于复旦大学材料系，2008年在加州大学洛杉矶分校材料系获博士学位，随后加入美国高科技公司Polyrera任高级工程师，2010至2012年于斯坦福大学从事博士后研究。曾获得the Office of Naval Research Young Investigator Award(2013)，Robert A. Welch Professorship，并得到ARPA-E的大力资助。
姚彦教授的主要的研究方向：能量存储和转换的材料及器件研究，对纳米材料的锂电池、太阳能电池和催化剂在原子层次上理解结构-属性-性能的关系。至今姚彦教授在Nature Commun, Adv. Mater., J. Am. Chem. Soc. , Nano Letter, ACS Nano等国际顶级杂志发表论文32篇，总引用超过7000次。
Efficient energy conversion and storage play important roles in the renewable energy landscape. In developing next-generation high-performance and low-cost batteries and solar cells, significant challenges exist at both the fundamental and practical levels. In this talk, I will discuss how rational nanostructure design can provide us a unique opportunity to manipulate the electrons, ions and photons to obtain remarkable device performance. In the first example, I will demonstrate a new approach to broad-band light trapping by forming whispering-gallery resonant modes inside a spherical nanoshell structure. Using nanocrystalline silicon (nc-Si) as a model system, the absorption of a single layer of 50-nm-thick spherical nanoshells is equivalent to a 1-um-thick planar nc-Si film. Then I will show lithium-ion battery anodes made of interconnected hollow spherical structure are capable of accommodating large mechanical strain without pulverization. The structure design is theoretically guided to effectively reduce lithium-diffusion-induced stress and experimentally verified with long electrochemical cycling life. Finally, I will show the approaches of nanoscale morphology engineering forefficient polymer bulk-heterojunction solar cells.
1、2013-06-26下午 2：00开始 给硕博生进行学术论文讲座
2、时间：2013-06-27日上午 9:30-11：00 明尼苏达大学张教授研讲座 。
题目：Measuring and Understanding Large-scale (Video) Content Delivery Systems
Label-free biomedical imaging using quantitative optical signatures
Quantitative imaging through various optical signatures such as phase, bi-refringence and refractive index, has sensitivity down to nanometers. These techniques provide not only a complement to the fluorescence imaging at a comparable spatial resolution, but also open doors to the development of new therapeutic treatments. To date, however, capabilities for obtaining quantitative functional imaging at cellular and sub-cellular level, especially 3D data, are rather limited. This presentation will provide an overview of recent developments in this area, and present several novel techniques that will underpin the final goal of label-free “super-resolved” 3D microscopy.
Dr. Shan Shan Kou obtained her PhD from National University of Singapore early 2011. She held an invited assistant scientist position in École polytechnique fédérale de Lausanne (EPFL) before becoming an independent researcher with a DECRA fellowship at the University of Melbourne in 2012. Her main research interests include biomedical imaging and biophotonics, optical micro- and nano- scopy, imaging theories and instrumentation.
报告人：林 佼 博士
Nanoplasmonics: shaping surface plasmon polaritions with nanostructures
The deep subwavelength confinement of electromagnetic energy offered by surface plasmons has generated considerable interest as a bridge between electronics and photonics for applications such as on-chip interconnects in next-generation photonic circuits. Using state-of-the-art nanofabrication tools, we aim to design and manufacture nanoscale interfaces for such applications by tailoring electromagnetic waves. The unprecedented ability to engineer properties of electromagnetic waves enabled by nanotechnology will lead to new features and enhancements of photonic devices.
Dr Jiao Lin is an Australian Research Council (ARC) Early Career Researcher with the School of Physics at the University of Melbourne (UoM) since 2013. Prior to joining UoM, Dr Lin spent one year in Singapore working as a research scientist at the Agency for Science, Technology and Research (A*STAR). He received a B. Eng. from Xiamen University in 2002, and an M.Sc. and a PhD from Nanyang Technological University in 2004 and 2008, respectively. During 2010-2012 he was a postdoctoral research fellow at the Harvard School of Engineering and Applied Sciences.
His research interests include nanophotonics, near-field optics, light-matter interactions, and physical optics. He has studied the design and fabrication of micro/nano optical elements and has continued to provide new insights into the diffraction theories of electromagnetic waves. His recent work on surface plasmon polaritons has led to a new dimension of the dynamic manipulation of surface waves. As of 2013, he has published over 30 papers in leading peer-reviewed journals including Science, Nature Communications, and Physical Review Letters.
讲座主题：Low cost fabrication of Cu(In,Ga)Se2 solar cells by a novel single-stage route based the Pulsed Electron Deposition (PED) technique
主讲人简介：Prof. Gilioli is the head of the "Thin film laboratory" at the Institute of Materials for Electronic and Magnetism of the Italian National Council for Research, (IMEM-CNR www.imem.cnr.it) in Parma, Italy.
He has been working in the last 10 years on the deposition of films of inorganic materials, with different deposition techniques, for applications in the Energy sector, in particular high temperature superconductors (YBCO-based HTS Coated Conductors) and, more recently, thin film solar cells, based on Cu(In,Ga)Se2 (CIGS). In the photovoltaic (PV) field, He has developed a new deposition method for CIGS by using the Pulsed Electron Deposition (PED) technique, allowing the fabrication of low-cost PV cells. Despite being relatively new to the PV sector (our research started about 4 years ago), his group has already achieved efficiency values exceeding 15%. The deposition takes places at low temperature (270 ??C), suggesting a possible application on flexible substrates.
Cu(In,Ga)Se2 (CIGS) is commonly considered the most promising material for thin film photovoltaic applications, for its efficiency exceeding 20% at the laboratory scale, the absence of toxic elements and the possibility to fabricate devices on curved/flexible substrates. However, due to the complexity of the phase diagram, the production of CIGS-based solar cells is typically realized adopting costly multi-steps processes, based on co-evaporation or co-sputtering, often followed by a high temperature selenization process. In order to simplify the deposition process, a relatively new growth technique has been developed at IMEM-CNR, based on the Pulsed Electron Deposition (PED) process. The PED technique is based on a high-energy pulsed electron beam that collides onto a target, causing its ablation and the subsequent condensation of evaporating species onto a substrate. The main scope of this presentation is to describe the solutions that have been found to control some of the aspects affecting the PV cell performance:
- CIGS composition (typical problem of chemically complex materials)
- surface roughness and droplet density (typical feature of high energy pulsed technique) - Na supply. By adopting these solutions, cells with efficiency exceeding 15% at remarkably low temperature (< 300 °C) can be reproducibly obtained [1-2], thus indicating the PED as a very promising technique for the cost effective fabrication of CIGS-based thin film solar cells on a large variety of substrates. Finally, the ongoing activity at IMEM-CNR towards the Cd-free “all-PED” CIGS based solar cells and the use of flexible substrates will be presented.
 S. Rampino et al., “Growth of Cu(In,Ga)Se2 thin film by a novel single-stage route based on Pulsed Electron Deposition (PED)”, Prog. Photovolt: Res. Appl., DOI: 10.1002/pip.1234 (2011)
 S. Rampino et al., “15% efficient Cu(In,Ga)Se2 solar cells obtained by low-temperature pulsed electron deposition” Applied Physics Letters 101, 132107 (2012)
2013年3月13日到14日，英国诺丁汉大学工程学院Kwang-Leong Choy教授将访问南开大学光电所铜铟镓硒太阳电池课题组，并作题为“Processing/structure/properties of transparent conducting oxides and absorbers by ESAVD for thin film solar cells”的学术报告。
Kwang-Leong Choy教授在牛津大学获得物理科学博士学位，曾在伦敦帝国理工学院任讲师和教授，目前是英国诺丁汉大学纳米材料学科的学术带头人，其带领的研究团队主要致力于纳米结构薄膜的表面镀膜和沉积技术、纳米工程控制、纳米粉/管/线制造、纳米级制造技术和工业化等研究。她发明的静电喷雾辅助气相沉积方法目前已经被产业化并被应用于陶瓷薄膜工程领域。她所获得的奖励包括：牛津冶金学会奖、英国材料研究所Grunfeld 奖章、英国高等教育创新奖等。她在承担EPSRC, HEFCE, The Royal Society, EPSRC Supergen on Fuel Cells, EU FP6-EXCELL, FOREMOST, RESTOOL等多项英国和欧盟的研究项目的同时，与Rolls-Royce, BG/Advantica, BP(USA), Norsk Hydro, IHI (Japan), Qinetiq, DSTL, Gillette, Acelor等多家公司有合作关系。