Scopus
Ground and first five low-lying excited states related optical absorption in In<inf>.1</inf>Ga<inf>.9</inf>N/GaN double quantum wells: Temperature and coupling impacts
Solid State Communications · Kasım 2021
Makale Bilgileri
DergiSolid State Communications
Yayın TarihiKasım 2021
Cilt / Sayfa338
Scopus ID2-s2.0-85112428326
Özet
In the present article, we investigated theoretically the total absorption coefficient related to inter conduction subband transitions in symmetric In.1Ga.9N/GaN double rectangular quantum wells within the effective-mass and parabolic band approximations making an allowance for temperature and structure's size influences. The finite difference method is adopted to solve numerically one-dimensional Schrödinger equation and to obtain the six first low-lying allowed eigen-values and their corresponding eigen-functions in view of finite potential barrier height, effective-mass and dielectric constant mismatches. The optical absorption coefficients are computed based on the compact density matrix approach within an iterative procedure. The numerical results are reported for two different values of temperature. Obvious temperature impact is obtained mainly for narrow coupling barrier compared to large one. Apart from 3S–3P transition and regardless the coupling width, momentous red-shift is found with increasing temperature. Moreover, 2S–2P, 2S–3P and 3S–3P associated TOAC spectra are blue-shifted while all others show a substantial red-shift with increasing the coupling width. Also, it is found that resonant optical absorption characteristics can be tailored by an appropriate selection of temperature and structure's size leading to new prospective for good performance infrared optical devices, optical modulators, solar cells and laser applications.
Yazarlar (6)
1
Redouane En-nadir
ORCID: 0000-0002-5064-0028
2
Haddou El Ghazi
ORCID: 0000-0002-2139-2360
3
Walid Belaid
ORCID: 0000-0001-9810-9386
4
Anouar Jorio
5
Izeddine Zorkani
ORCID: 0000-0003-2794-3132
6
Hamdi Şükür Kılıç
Anahtar Kelimeler
DQWs
Impurity
InGaN
Optical absorption
Size
Temperature
Kurumlar
Faculté des Sciences Dhar El Mahraz, Université Sidi Mohamed Ben Abdellah
Fez Morocco
Hassan II University of Casablanca
Casablanca Morocco
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
11
Atıf
6
Yazar
6
Anahtar Kelime