{"title":"Theory and Modelling of High-Field Carrier Transport in High-Speed Photodetectors","authors":"N. Zakhleniuk","doi":"10.1109/NUSOD.2007.4349032","DOIUrl":null,"url":null,"abstract":"The authors present analytical microscopic theory and numerical simulation of high-field hot-electron effects in highspeed p-i-n and uni-travelling carrier (UTC) photodetectors (PDs), using both the drift-diffusion (DD) and hydrodynamic (HD) models for steady-state and transient regimes. It is shown that the current models of drift mobility in DD transport are not applicable for strongly inhomogeneous systems with built-in fields. A new DD mobility model is suggested. Comparative analysis of DD and HD modeling results is carried out and it is shown that the HD model adequately describes operation of high-speed PDs excited by short sub-picosecond optical pulses.","PeriodicalId":255219,"journal":{"name":"2007 International Conference on Numerical Simulation of Optoelectronic Devices","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 International Conference on Numerical Simulation of Optoelectronic Devices","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NUSOD.2007.4349032","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
The authors present analytical microscopic theory and numerical simulation of high-field hot-electron effects in highspeed p-i-n and uni-travelling carrier (UTC) photodetectors (PDs), using both the drift-diffusion (DD) and hydrodynamic (HD) models for steady-state and transient regimes. It is shown that the current models of drift mobility in DD transport are not applicable for strongly inhomogeneous systems with built-in fields. A new DD mobility model is suggested. Comparative analysis of DD and HD modeling results is carried out and it is shown that the HD model adequately describes operation of high-speed PDs excited by short sub-picosecond optical pulses.
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