Superior photosensing performance by Ag nanoparticles textured Al2O3 thin film based device
Source abstract
Abstract
This report discusses about the improvement in photosensing characteristics of a silver (Ag) nanoparticles (NP) textured aluminum oxide (Al2O3) thin film (TF) device by glancing angle deposition (GLAD) technique. This device has been synthesized on n-Si substrates using an electron beam (e-beam) evaporation technique. The samples were then morphologically and crystallographically characterized by field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and X-ray diffraction (XRD), respectively. The Ag NP/Al2O3 TF-based device has a two fold improvement in photocurrent compared to the bare Al2O3 TF device owing to the generation of the interfacial trap states. The Ag NP/Al2O3 TF-based device also possessed 3.1 fold enhancement in photosensitivity, improved barrier height (0.80 eV), detectivity (3.7 × 107 jones), and noise equivalent power (NEP: 2.17 × 10−9 W). The Ag NP/Al2O3 TF device has faster photosensing performances (Tr = 0.25 s and Tf = 0.25 s) than the bare Al2O3 TF device (Tr = 0.60 s and Tf = 0.58 s). Therefore, the improved parameters will ensure that the Ag NP/Al2O3 TF device can be used as a fast-switching efficient photosensor.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Optical Coatings and Gratings · Thin-Film Transistor Technologies · GaN-based semiconductor devices and materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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