Scopus
YÖKSİS Eşleşti
Comparison of Al/TiO<inf>2</inf>/p-Si and Al/ZnO/p-Si photodetectors
Optical Materials · Kasım 2023
YÖKSİS Kayıtları
Comparison of Al/TiO2/p-Si and Al/ZnO/p-Si photodetectors
Optical Materials · 2023 SCI-Expanded
PROFESÖR MURAT YILDIRIM →
Makale Bilgileri
DergiOptical Materials
Yayın TarihiKasım 2023
Cilt / Sayfa145
Scopus ID2-s2.0-85171611232
Özet
The importance of the photodetectors has grown due to their potential in the automation system and optical communications. We fabricated Al/TiO2/p-Si and Al/ZnO/p-Si Schottky-type photodetectors. TiO2 and ZnO interlayers were grown by atomic layer deposition (ALD). The photodetection properties of these devices were studied and compared by I–V and I-t measurements for various light power densities and various wavelengths. Scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectra were employed to determine morphological and elemental analysis of the TiO2 and ZnO interlayers. While the SEM images showed smooth surfaces, EDX spectra approved successful synthesis of the TiO2 and ZnO interlayers with good stoichiometry. The diode parameters such as ideality factor, series resistance and barrier height values were calculated and compared in detail. The responsivity and detectivity of the fabricated photodetectors were determined as a function of illumination power density and wavelength. The responsivity values of the Al/TiO2/p-Si and Al/ZnO/p-Si photodetectors were determined as 0.02 and 0.76 A/W, respectively. Both photodetectors exhibited good performance for visible light. However, Al/ZnO/p-Si photodetector reached 173.08% external quantum efficiency (EQE) for 550 nm. According to results, Al/ZnO/p-Si photodetector exhibited better detection performance than Al/TiO2/p-Si.
Yazarlar (3)
1
Dilber Esra Yıldız
ORCID: 0000-0003-2212-199X
2
Adem Koçyiğit
3
Murat Yıldırım
Anahtar Kelimeler
ALD
Photodetectors
Responsivity
TiO 2
ZnO
Kurumlar
Bilecik Şeyh Edebali Üniversitesi
Bilecik Turkey
Hitit University
Corum Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
11
Atıf
3
Yazar
5
Anahtar Kelime