Listar por tema "Diodos de tunelamento ressonante"

Mostrando ítems 1-7 de 7

    • Estudo experimental de efeitos de spin em heteroestruturas semicondutoras 

      Gordo, Vanessa Orsi (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 28/04/2015)
      In this thesis, we have investigated optical and spin properties of semiconductor nanostructures. Photoluminescence and magneto-photoluminescence measurements were performed in high magnetic field (B ≤ 15T), in GaBiAs ...

    • Optical and transport properties of p-i-n GaAs/AlAs resonant tunneling diode 

      Awan, Iram Taj (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, , 26/05/2014)
      In this thesis, we have investigated the optical and transport properties of a p-i-n GaAs-AlAs resonant tunneling diode (RTD). The possibility of controlling and significantly varying the density of carriers accumulated ...

    • Transport phenomena in quasi-one-dimensional heterostructures 

      Dias, Mariama Rebello de Sousa (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, , 21/02/2014)
      O crescimento e caracterização de sistemas de heteroestruturas semicondutoras quasi-unidimensionais têm atraído grande interesse devido à sua potencial de aplicação tecnológica, como foto-detectores, dispositivos ...

    • Efeitos de spin em diodos de tunelamento ressonante tipo-p 

      Galeti, Helder Vinicius Avanço (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, , 27/03/2012)
      In this work, we have investigated the spin effects in p-i-p GaAs/AlAs resonant tunneling diodes under magnetic field parallel to the tunnel current. The spin-dependent tunneling of carriers was studied by analyzing the ...

    • Propriedades magneto-óticas e de magneto-transporte de um diodo de tunelamento ressonante contendo Si δ - doping no poço quântico 

      Herval, Leonilson Kiyoshi Sato de (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, , 11/03/2011)
      In this work, we have studied the transport and optical properties of GaAs = AlGaAs resonant tunneling diodes with Si delta-doping at the center of the quantum well. We have studied magneto-transport and polarized resolved ...

    • Carrier dynamics of low-dimensional semiconductors: from quantum wells and quantum dots to resonant tunneling devices 

      Naranjo Lopez, Andrea (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 22/07/2021)
      This thesis aims to study heterostructures and devices that play a fundamental role in modern nanoelectronic technologies, focusing on group III-V semiconductor materials, especially arsenide-based systems, for photodetection ...

    • Charge carrier dynamics and optoelectronic properties in quantum tunneling heterostructures 

      Guarin Castro, Edgar David (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 17/09/2021)
      Semiconductor quantum tunneling heterostructures offer a wide range of applications as photosensors, lasers, and circuit elements. However, fundamental questions related to energy transfer mechanisms and the correlation ...