Facile synthesis of Sb2S3 micro-materials for highly sensitive visible light photodetectors and photocatalytic applications

The microstructure and electrical and optical properties of Ge–Cu–Te phase-change thin films

“…Thus, increased defects in the thin films annealed at 300 °C may enhance diffuse reflection, resulting in decreased optical reflectivity. 60 Furthermore, the change in the optical properties of the thin films may be related to the additional stresses at the interface between the thin films and the Si substrate due to a ∼9.5% lattice mismatch ( a GCT : 0.595 nm, a si : 0.543 nm). For example, because of the relaxation of the residual stress of the SiO 2 thin films fabricated on a Si wafer, the refractive index decreases.…”

Controlled Ni doping on a g-C3N4/CuWO4 photocatalyst for improved hydrogen evolution

“…The increase in microstrain and dislocation density indicates the creation of defects in the crystal; herein microstrain increased both after doping and after supporting on the support. 51–53 Microstrain refers to the local distortions within the crystal lattice of the material and can influence the material's electronic band structure, which in turn affects its light absorption and charge carrier transport properties. Small amounts of microstrain can create localized electronic states within the bandgap, which may act as trap states for charge carriers (electrons and holes).…”

Building an Efficient Optoelectronic Property at the AZO/Cu/AZO Heterogeneous Interface with Copper Intercalation

“…Figure (e) shows the room temperature PL spectra recorded under 310 nm excitation of AZO/Cu/AZO triple films with different Cu thicknesses deposited on a glass substrate. It can be seen that the spectra show two UV emission peaks at 367 nm (3.37 eV) and 396 nm (3.13 eV), which is attributed to the recombination of free excitons. ,− The spectrum presents a blue emission peak around 468 nm (2.64 eV) and a green emission peak near 558 nm (2.22 eV). Blue emission may result from the recombination of oxygen vacancies with oxygen gaps or other defects, while green emission may result from the recombination of photogenerated holes with single ionized oxygen vacancies on the surface of AZO particles.…”

“…Therefore, multilayer structure films based on metal Cu have become a research trend. Among the doped ZnO, AZO (Al-doped ZnO) has better conductivity. − Domestic and foreign scholars have widely studied the ZnO/Cu/ZnO structure, but there are relatively few studies on the AZO/Cu/AZO structure, and verification work in simulation has not been reported. The combination of transparent and conductive AZO and cheap Cu has important research significance.…”