Investigation of the blue–green emission and UV photosensitivity of Cu-doped ZnO films

Ultrahigh responsivity UV/IR photodetectors based on pure CuO nanowires

“…CuO photodetectors have been fabricated by different methods, such as thermal treatment [15], radio frequency (RF) magnetron sputtering [16], rapid thermal oxidation (RTO) [17], sol-gel process using a spin coating technique [18] and pulsed laser deposition technique [19].…”

Effects of Alkyl Chain Length on Crystal Growth and Oxidation Process of Two-Dimensional Tin Halide Perovskites

“…X-ray photoelectron spectroscopy (XPS) was used to evaluate the effect of alkyl chain length on inhibiting the oxidation of Sn 2+ . In order to eliminate the interference of oxygen on the surface, the samples were etched using an Ar + plasma for 120 s. Simulated lines of narrow-scan XPS spectra at Sn 3d 3/2 and Sn 3d 5/2 regions in A 2 (FA) n −1 Sn n I 3 n +1 (A = BA, OA, and DA) are shown in Figure a–c, which are fitted to Sn 2+ (486.0 and 494.5 eV) and Sn 4+ (486.8 and 495.3 eV) components by a Gaussian plot . The results show that the ratios of Sn 2+ /Sn 4+ of the samples reduce in the trend of BA > OA > DA, which demonstrates that the organic cation length plays a critical role in preventing Sn 2+ from being oxidized to Sn 4+ .…”

Effect of Annealing Temperature on Structural and Optical Properties of (Cu, Al):ZnO Thin Film by Sol-Gel Method

“…where d hkl is the crystalline plane distance for indices (hkl), whose values could be obtained from the XRD patterns,a and c are the lattice parameters. The plane stress of all the samples were calculated according to [9]:…”

“…Its strong exciton binding energy of 60 meV makes it very attractive for exciton-based lasing applications [1]. ZnO possesses a high thermal stability and chemical stability, which render it a more preferably short wavelength light-emitting material at room temperature.ZnO has attracted considerable attention for the fabrication of short-wavelength optoelectronic devices, such as light-emitting and laser diodes, blue and UV light emitters, and UV photodetectors [2].…”