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Master's Dissertation
DOI
10.11606/D.43.2013.tde-24092014-145628
Document
Author
Full name
Marcel Santos Claro
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2013
Supervisor
Committee
Quivy, Alain Andre (President)
Hernandez, Felix Guilhermo Gonzalez
Vieira, Gustavo Soares
Title in Portuguese
Determinação da corrente de escuro em fotodetectores de radiação infravermelha baseados em poços quânticos (QWIPs)
Keywords in Portuguese
corrente de escuro,fotodetectores,infravermelho,poço quântico
Abstract in Portuguese
Neste trabalho, foram estudados os modelos mais comuns para a descrição da corrente de escuro em fotodetectores baseados em poços quânticos (QWIPs). Foram também realizadas as alterações necessárias para tornar estes modelos independentes de ajustes experimentais, possibilitando assim a otimização dos dispositivos antes de sua fabricação. Estas simulações foram comparadas com os dados experimentais de amostras desenvolvidas em nosso laboratório para avaliar a qualidade do sistema de aquisição de curvas I x V recém-instalado, bem como dos dispositivos desenvolvidos. Analisando os resultados experimentais e teóricos, foi possível ainda identificar os diferentes regimes de transporte em cada temperatura e tensão aplicada.
Title in English
Dark current studies on Quantum Well Infrared Photodetectors (QWIPs)
Keywords in English
Dark Current
Infrared
Photodetector
Quantum Well
Abstract in English
In this work, we analyzed the most common models of the literature aiming to describe the dark current in quantum well based photodetectors (QWIPs), making the necessary changes to make them independent of experimental data, and enabling thus the optimization of the devices before they are fabricated. These simulations were compared to experimental data of sample grown in our laboratory to evaluate the quality of the I-V curve acquisition system recently installed, as well as the performance of the new devices being produced. By analyzing the experimental and theoretical results, it was still possible to identify the different transport regimes at each temperature and applied voltage.
 
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DissertacaoMarcel.pdf (12.18 Mbytes)
Publishing Date
2014-12-04
 
WARNING: The material described below relates to works resulting from this thesis or dissertation. The contents of these works are the author's responsibility.
  • CLARO, M. S., et al. Experimental and theoretical studies of dark current in quantum-well infrared photodetectors. In Workshop on Infrared Technology, Rio de Janeiro, 2011. Anais da conferência., 2011. Resumo.
  • FERNANDES, F. M., et al. Low-temperature electronic transport mechanisms deduced from noise measurements in quantum-well infrared photodetectors. In International Conference os Superlattices, Nanostructures and Nanodevices (ICSNN 2012), Dresden, 2012. Anais da conferência., 2012. Abstract.
  • MAIA, A. D. B., et al. Influence of In segregation and intermixing on the optical and electronic properties of InAs/GaAs quantum dots and photodetectors. In International Conference os Superlattices, Nanostructures and Nanodevices (ICSNN 2012), Dresden, 2012. Anais da conferência., 2012. Abstract.
All rights of the thesis/dissertation are from the authors
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