Optoelectronic performance of n?Si/p?MgSe heterojunctions as a visible light communication component
Yükleniyor...
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier B.V.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Herein magnesium selenide thin films coated onto glass and Si substrates are studied and characterized. The films, prepared by the thermal vacuum evaporation technique under a vacuum pressure of 10?5 mbar, are structurally, morphologically, compositionally, optically, and electrically investigated. While films grown onto glass substrates showed the existence of cubic phases of MgSe and MgSe2, films coated onto Si substrates contained SiSe2. Replacement of glass substrates by Si highly improved the crystallinity of the films. In addition, the optical analyses on the films grown onto Si substrates indicated the formation of Si/MgSe heterojunctions with valence and conduction band offsets of 0.95?eV and 0.40?eV, respectively. MgSe films are coated onto Si substrates and contacted with Ag contacts performed as photosensors suitable for vehicle visible light communications. The asymmetry (rectification ratios), the current responsivity, the noise equivalent power factor, and the detectivity of the devices reached 517, 0.73?A/W, 5.93W/Hz1/2 and 5.8 Jones, respectively, at 4.3?V.
Açıklama
Anahtar Kelimeler
MgSe, Thermal Evaporation, VLC, Photosensors, Band Offset
Kaynak
Optik
WoS Q DeÄŸeri
Q2
Scopus Q DeÄŸeri
N/A
Cilt
271
Sayı
Künye
Almotiri, R.A., Qasrawi, A.F. (2022). Optoelectronic performance of n−Si/p−MgSe heterojunctions as a visible light communication component, 271 doi: 10.1016/j.ijleo.2022.170106
