Piezotronics and Piezo-phototronicsof theThird Generation Semiconductors
压电光电子学与第三代半导体
Zhong Lin WANG
王中林
中国科学院北京纳米能源与系统研究所
ABSTRACT
Piezoelectricity, a phenomenon known for centuries, is an effect that is about the production of electrical potential in a substance as the pressure on it changes. For wurtzite structures such as ZnO, GaN, InN and ZnS, due to the polarization of ions in a crystal that has non-central symmetry, a piezoelectric potential (piezopotential) is created in the crystal by applying a stress. The effect of piezopotential to the transport behavior of charge carriers is significant due to their multiple functionalities of piezoelectricity, semiconductor and photon excitation. By utilizing the advantages offered by these properties, a few new fields have been created. Electronics fabricated by using inner-crystal piezopotential as a “gate” voltage to tune/control the charge transport behavior is named piezotronics, with applications in strain/force/pressure triggered/controlled electronic devices, sensors and logic units. This effect was also extended to 2D materials such as MoS2. The ive of this talk is to introduce the fundamentals of piezotronics and their application for robotics and human-machine interfacing.
压电效应，一种已知一个多世纪的经典效应，是当施加在材料中的压力变化时产生电势能的一种现象。在如氧化锌、氮化镓、氮化铟和硫化锌等具备纤锌矿结构的材料中，由于非中心对称的晶体中存在的离子极化，晶体受到外界压力时会产生压电电势。由于压电电势在压电效应、半导体和光子激发等方面的多功能作用，其对载流子传输的影响显著。利用其在这方面特性的优势，成功开发了几个新的研究方向。利用压电电势作为“栅极”电压来调控载流子传输的电子器件，即压电电子学，在拉力/压力引发/控制的电子器件、传感器和逻辑电路中有着广发的应用。该效应也成功拓展到了其他二维材料，如二硫化钼等。在本次报告中将介绍压电电子学的基本原理以及其在机器人和人机交互方面的应用。
BIOGRAPHY
Dr. Zhong Lin Wang is the Director of the Beijing Institute of Nanoenergy and Nanosystems, and Regents' Professor and Hightower Chair at Georgia Institute of Technology. Dr. Wang pioneered the nanogenerators fundamental science to technological applications. His research on self-powered nanosystems has inspired the worldwide effort in academia and industry for studying energy for micro-nano-systems. He coined and pioneered the fields of piezotronics and piezo-phototronics for the third generation semiconductors. Among 100,000 scientists across all fields worldwide, Wang is ranked #5 in career scientific impact, #1 in Nanoscience, and #2 in Materials Science. His google scholar citation is over 280,000 with an h-index of over 256.
Dr. Wang has received the Celsius Lecture Laureate, Uppsala University, Sweden (2020); The Albert Einstein World Award of Science (2019); Diels-Planck lecture award (2019); ENI award in Energy Frontiers (2018); Global Nanoenergy Prize, The NANOSMAT Society, UK (2017); Distinguished Research Award, Pan Wen Yuan foundation (2017); Distinguished Scientist Award (US) Southeastern Universities Research Association (2016); Thomas Router Citation Laureate in Physics (2015); Distinguished Professor Award (Highest faculty honor at Georgia Tech) (2014); The James C. McGroddy Prize in New Materials American Physical Society (2014); MRS Medal Materials Research Soci. (2011).
Dr. Wang was elected as a foreign member of the Chinese Academy of Sciences in 2009, member of European Academy of Sciences in 2002, academician of Academia of Sinica 2018, International fellow of Canadian Academy of Engineering 2019; Foreign member of the Korean Academy of Science and Technology 2019; fellow of American Physical Society in 2005, fellow of AAAS in 2006, fellow of Materials Research Society in 2008, fellow of Microscopy Society of America in 2010, fellow of the World Innovation Foundation in 2002, fellow of Royal Society of Chemistry, and fellow of World Technology Network 2014. Dr. Wang is the founding editor and chief editor of an international journal Nano Energy, which now has an impact factor of 16.6. Details can be found at: http://www.nanoscience.gatech.edu
王中林是中科院北京纳米能源与系统研究所所长，佐治亚理工学院终身教授和摄政董事教授。他是纳米发电机在基础科学和科技应用方面的先驱者，其自供能纳米系统的研究启发了全球科学界和工业界在微米-纳米系统能源方面的发展，是第三代半导体在压电电子学和压电光电子学方面的发明者和先驱。在全球100000名各学科顶尖科学家中，王中林在科学影响力方面排名第五，在纳米科学方面排名第一，在材料科学方面排名第二；Google学术引用超280000次，h-index高达256。
他荣获了瑞典乌普萨拉大学摄尔西乌斯奖(2020)、阿尔伯特爱因斯坦世界科学奖(2019)、迪尔斯-普朗克奖(2019)、意大利埃尼“前沿能源奖”(2018)、全球纳米能源奖(2017)、潘文渊文教基金会研究杰出奖(2017)、美国SURA杰出科学家奖(2016)、汤森路透2015年度引文桂冠奖(2015)、佐治亚理工学院杰出教授终身成就奖(2014)、美国物理学会詹姆斯·C·麦高第新材料奖(2014)和美国材料学会奖章(2011)等。
他入选了中科院外籍院士(2009)、欧洲科学院院士(2002)、中央研究院院士(2018)、加拿大工程院国际院士(2019)、韩国科学院院士(2019)、美国物理学会会士(2005)、美国科学发展协会院士(2006)、材料研究学会会士(2008)、美国显微协会会士(2010)、世界创新基金会会士(2002)和皇家化学学会会士以及世界科技网成员(2014)等。同时，王中林是国际期刊纳米能源（Nano Energy，影响因子16.6）的创始编辑和总编辑。详细信息见http://www.nanoscience.gatech.edu