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- Title
Synthesis and Properties of p-Si/n-Cd 1−x Ag x O Heterostructure for Transparent Photodiode Devices.
- Authors
Anitha, Mannarsamy; Deva Arun Kumar, Karuppiah; Mele, Paolo; Anitha, Nagarajan; Saravanakumar, Karunamoorthy; Sayed, Mahmoud Ahmed; Ali, Atif Mossad; Amalraj, Lourdusamy
- Abstract
We developed silver-doped Cd1–xAgxO thin films (where x = 0, 0.01, 0.02, 0.03 and 0.04) on amorphous glass substrate by an automated nebulizer spray pyrolysis set-up. The XRD patterns show rock salt cubic crystal structures, and the crystallite sizes vary with respect to Ag doping concentrations. SEM images exhibited a uniform distribution of grains with the addition of Ag; this feature could support the enhancement of electron mobility. The transmittance spectra reveal that all films show high transmittance in the visible region with the observed bandgap of about 2.40 eV. The room temperature photoluminescence (PL) studies show the increase of near-band-edge (NBE) emission of the films prepared by different Ag doping levels, resulting in respective decreases in the bandgaps. The photodiode performance was analyzed for the fabricated p-Si/n-Cd1–xAgxO devices. The responsivity, external quantum efficiency and detectivity of the prepared p-Si/n-Cd1–xAgxO device were investigated. The repeatability of the optimum (3 at.% Ag) photodiode was also studied. The present investigation suggests that Cd1–xAgxO thin films are the potential candidates for various industrial and photodetector applications.
- Subjects
THIN films; ELECTRON mobility; QUANTUM efficiency; DISTRIBUTION (Probability theory); ROCK concerts; SILVER nanoparticles
- Publication
Coatings (2079-6412), 2021, Vol 11, Issue 4, p425
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings11040425