https://scholars.lib.ntu.edu.tw/handle/123456789/581266
標題: | Localization landscape theory of disorder in semiconductors. III. Application to carrier transport and recombination in light emitting diodes | 作者: | Li C.-K Piccardo M Lu L.-S Mayboroda S Martinelli L Peretti J Speck J.S Weisbuch C Filoche M Wu Y.-R. YUH-RENN WU |
公開日期: | 2017 | 卷: | 95 | 期: | 14 | 來源出版物: | Physical Review B | 摘要: | This paper introduces a novel method to account for quantum disorder effects into the classical drift-diffusion model of semiconductor transport through the localization landscape theory. Quantum confinement and quantum tunneling in the disordered system change dramatically the energy barriers acting on the perpendicular transport of heterostructures. In addition, they lead to percolative transport through paths of minimal energy in the two-dimensional (2D) landscape of disordered energies of multiple 2D quantum wells. This model solves the carrier dynamics with quantum effects self-consistently and provides a computationally much faster solver when compared with the Schr?dinger equation resolution. The theory also provides a good approximation to the density of states for the disordered system over the full range of energies required to account for transport at room temperature. The current-voltage characteristics modeled by three-dimensional simulation of a full nitride-based light emitting diode (LED) structure with compositional material fluctuations closely match the experimental behavior of high-quality blue LEDs. The model allows also a fine analysis of the quantum effects involved in carrier transport through such complex heterostructures. Finally, details of carrier population and recombination in the different quantum wells are given. ? 2017 American Physical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018480903&doi=10.1103%2fPhysRevB.95.144206&partnerID=40&md5=5cd2fc91a1c4fd085abd50f6ce011a41 https://scholars.lib.ntu.edu.tw/handle/123456789/581266 |
ISSN: | 24699950 | DOI: | 10.1103/PhysRevB.95.144206 |
顯示於: | 電機工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。