Dark current and optical properties in asymmetric GaAs/AlGaAs staircase-like multiquantum well structure
Küçük Resim Yok
Tarih
2013
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, we investigate dark current voltage characteristics of GaAs/AlGaAs staircase-like asymmetric multiquantum well structure at various temperatures experimentally. Measured dark current density voltage (J(d)-V) characteristics are compared with the Levine Model. It is seen that the model fits well with the experimental dark current density. Ground state energy of electrons, heavy holes and light holes are calculated by Kronig Penney Model. Optical properties of sample are characterized by photoluminescence and photoconductivity measurements. The temperature-dependent photoluminescence (PL) spectra of the GaAs/GaAlAs QWIP show that the peaks corresponding interband transition from the ground heavy-hole subband to the ground electronic subband (E-hh1 - E-e1) are dominantly observed and the peak positions corresponding to the interband transitions of the PL spectrum are dependent on the temperature. Photoconductivity measurement is performed for different negative polarities at 37 K. (C) 2013 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Dark current, QWIP, Photoluminescence, Photoconductivity
Kaynak
Infrared Physics & Technology
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
58
