Ambient synthesis and optoelectronic properties of copper iodide semiconductor nanoparticles

Structure-property relationships in cubic cuprous iodide: A novel view on stability, chemical bonding, and electronic properties

“…[17][18][19][20]). CuI belongs to a cuprous halide family CuX; it is characterized by the monovalent copper(I) state which is stabilized by tetrahedral coordination to the surrounded four halogen atoms.…”

Mechanism of band-edge luminescence in cuprous iodide single crystals

“…Cuprous iodide (CuI) has attracted a great deal of attention [1][2][3] because of its unusual properties such as wide band gap, negative spin-orbit splitting [4], anomalous diamagnetism behavior [5], and large ionicity [6]. CuI has three crystalline phases: a, b and c [7], and normally exists in the low-temperature c-phase with zinc blend structure.…”

“…Thus the luminescent characteristics of CuI are of primary importance for its scintillation use. However, previous research on luminescence properties of CuI film and crystalline material has mainly focused on its photoluminescence spectra at room temperature [2,3,12]. To our knowledge, there are few papers about the temperature dependence of photoluminescence spectra of CuI crystals and there is little research on the photoluminescence excitation (PLE) spectra of CuI material, especially in the vacuum ultraviolet (VUV) region.…”

Green synthesis of the reduced graphene oxide–CuI quasi-shell–core nanocomposite: A highly efficient and stable solar-light-induced catalyst for organic dye degradation in water

“…The emission at 425 nm is associated with the presence of traps level, which probably arises from surface defects [38]. Moreover, there is a small red shift (2.95 eV) in the emission peaks with respect to the optical band gap; this could be related to large surface defects created by the small size nanocrystals [10]. Indeed, the emission spectra It is interesting to note that the introduction of graphene to CuI, to generate the CuI-RGO nanocomposites exhibited much higher adsorption ability under adsorption-desorption equilibrium condition than that of pure CuI nanostructures.…”

“…Among these materials, CuI nanostructures are particularly noteworthy because of its unique properties such as large band gap, high exciton binding energy, intense radiative recombination of excitons, negative spin-orbit splitting, large temperature dependency of resistivity, large ionicity, and high photosensitivity [9][10]. As a result, CuI is suitable for a wide range of applications, such as ultra-fast scintillators, light-emitting diodes, solid-state dye-sensitized solar cells, organic catalysts, surface coatings, sensors and catalysts [11,12].…”