Effects of polycrystalline GeO2 substrates on the structural, optical and electrical properties of ZnSe thin films

Basit Öğe Kaydı
dc.authoridAtef Fayez Qasrawi / 0000-0001-8193-6975en_US
dc.authorscopusidAtef Fayez Qasrawi / 6603962677
dc.authorwosidAtef Fayez Qasrawi / R-4409-2019
dc.contributor.authorAlGarni, Sabah E.
dc.contributor.authorQasrawi, Atef Fayez
dc.contributor.authorKhusayfan, Najla M.
dc.date.accessioned2021-06-03T12:31:25Z
dc.date.available2021-06-03T12:31:25Z
dc.date.issued2021en_US
dc.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Bölümüen_US
dc.description.abstractHerein, the effects of polycrystalline germanium dioxide substrates on the structural, morphological, optical and electrical properties of zinc selenide thin films are reported. Thin films of ZnSe coated onto GeO2 are prepared by the thermal evaporation technique under vacuum pressure of 10–5 mbar. Compared to films grown onto glass substrates, ZnSe films deposited onto GeO2 exhibited narrower band gap and improved light absorbability. When ZnSe films are recoated onto gold substrates, the insertion of GeO2 layers between Au and ZnSe shifted the resonance peaks of the capacitance spectra from 527 to 711 MHz and formed new peak at 1000 MHz making the Au/ZnSe interfaces more appropriate for use as microwave cavities and as negative capacitance sources. Analysis of the conductivity spectra in the frequency domain of 10–1800 MHz revealed the domination of quantum mechanical tunneling and correlated barriers hoping of charge carriers in the samples. The fitting of the conductivity spectra assuming combined current conduction by these two mechanisms has shown that GeO2 layers increased the density of state near the Fermi level and shortened the scattering time of charge carriers. The designed Au/GeO2/ZnSe/C devices are also found to be suitable as band pass/ stop filters. The notch frequency of these filters is shifted from 1420 MHz to 1050 MHz as a result of GeO2 participation in the structure of the Au/ZnSe devices.en_US
dc.identifier.citationAl Garni, S. E., Qasrawi, A. F., & Khusayfan, N. M. (2021). Effects of polycrystalline GeO2 substrates on the structural, optical and electrical properties of ZnSe thin films. Physica Scripta.en_US
dc.identifier.doi10.1088/1402-4896/ac05f3en_US
dc.identifier.scopus2-s2.0-85107992905en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://doi.org/10.1088/1402-4896/ac05f3
dc.identifier.urihttps://hdl.handle.net/20.500.12713/1779
dc.identifier.wosWOS:000658871200001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorQasrawi, Atef Fayez
dc.language.isoenen_US
dc.publisherIOPScienceen_US
dc.relation.ispartofPhysica Scriptaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAu/GeO2/ZnSeen_US
dc.subjectBand Gapen_US
dc.subjectMicrowave Cavityen_US
dc.subjectBand Pass Filtersen_US
dc.titleEffects of polycrystalline GeO2 substrates on the structural, optical and electrical properties of ZnSe thin filmsen_US
dc.typeArticleen_US

Dosyalar

Orijinal paket
Listeleniyor 1 - 1 / 1
Küçük Resim Yok
İsim:
58.pdf
Boyut:
999.67 KB
Biçim:
Adobe Portable Document Format
Açıklama:
Tam Metin/Full Text
İndir
Lisans paketi
Listeleniyor 1 - 1 / 1
Küçük Resim Yok
İsim:
license.txt
Boyut:
1.44 KB
Biçim:
Item-specific license agreed upon to submission
Açıklama:
İndir

Koleksiyon

Elektrik-Elektronik Mühendisliği Bölümü Makale Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu