Spatially-resolved cathodoluminescence spectroscopy of ZnO defects |
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| Institution: | 1. Department of Electrical & Computer Engineering, The Ohio State University, Columbus, OH 43210, USA;2. Department of Physics, The Ohio State University, Columbus, OH 43210, USA;3. Department of Nanoengineering, Program of Materials Science and Engineering, University of California, La Jolla, San Diego, CA 92023, USA;4. Institut für Experimentelle Physik II, Universität Leipzig, Linnéstr. 5, 04103 Leipzig, Germany;1. Applied Ion Beam Physics Laboratory, Key Laboratory of the Ministry of Education, Institute of Modern Physics, Fudan University, Shanghai 200433, PR China;2. Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, PR China;3. Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, PR China;1. Department of Physics, Sri Venkateswara University, Tirupati 517502, India;2. Centre for Nano Science and Engineering, Indian Institute of Science, Bangalore 560012, India;1. Unité de recherche de Physique des Matériaux Isolants et Semi-Isolants, Faculté des Sciences de Sfax, BP 1171, 3000 Sfax, Université de Sfax, Tunisia;2. Unité de Physique des Dispositifs à Semi-Conducteurs, Faculté des Sciences de Tunis, Université de Tunis, El Manar, 2092, Tunis, Tunisia;3. Laboratoire de Physique Mathématiques et Applications, Unité des Matériaux Ferroélectriques, Faculté des Sciences de Sfax, BP 1171, 3000, Sfax, Université de Sfax, Tunisia;1. Suzhou Institute of Nano-tech and Nano-bionics, CAS, Ruoshui Road 398, Suzhou Industrial Park, Suzhou 215123, China;2. Suzhou Nanowin Science and Technology Co., Ltd., Suzhou 215123, China;3. School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China;1. Department of Physics, UFS, Bloemfontein ZA-9300, South Africa;2. Laser Department, National Institute for Laser, Plasma, and Radiation Physics, Bucharest-Magurele, Romania |
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| Abstract: | Spatially-resolved cathodoluminescence spectroscopy has contributed significant new information to our understanding of native point defects in ZnO micro- and nanoscale structures. This paper aims to review representative examples of this work and the new perspectives gained from spatially resolving these defects both laterally and depth-wise. Results obtained from many groups worldwide include studies of Schottky diodes, polycrystalline ceramics, nanostructures, and microwires. The nature and spatial distribution of native point defects in these materials together with their strong dependence on growth and processing suggest new avenues for their control in transport and optoelectronic device structures. |
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| Keywords: | Cathodoluminescence spectroscopy ZnO Defects Nanostructures |
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