Luminescent properties of Cu6PS5I nanosized superionic conductors

Interrelations between structural and optical properties of (Cu1��Agx)7GeS5I mixed crystals

“…Perhaps, the short-wavelength anomaly detected at λ = 433 nm (or E = 2.864 eV) for Cu 7 GeS 5 I corresponds to an inter-band Van Hove-Phillips singularity. This type of singularity has earlier been observed for the other Cu 6 PS 5 I argyrodites [16,17]. 6 presents the compositional dependences of the refractive index at the light wavelength λ = 1 µm and the energy pseudogap E g , which are obtained from the spectral ellipsometry measurements for the (Cu 1-х Ag x ) 7 GeS 5 I mixed crystals.…”

Optical absorption edge and luminescence in phosphorous-implanted Cu6PS5X (X = I, Br) single crystals

“…Spectrometric studies of optical absorption edge and luminescence were carried out within the temperature range 77 to 320 K using LOMO KSVU-23 grating monochromator; for the luminescence studies the 532-nm laser light was used as the excitation source [2,8]. During the measurements, the samples were oriented at room temperature while being in the cubic phase.…”

“…Near the optical absorption edge in Cu 6 PS 5 X crystals, the excitonic bands are revealed, which are smeared with temperature increase and Urbach behaviour of absorption edge is observed [2]. In the luminescence spectra of Cu 6 PS 5 X crystals at low temperatures, the excitonic and impurity-related bands are observed; with temperature increase the noticeable temperature quenching takes place [8]. This paper is aimed at the optical absorption and luminescence studies of implanted Cu 6 PS 5 X superionic crystals as well as the influence of implantation on Urbach parameters, parameters of exciton-phonon interaction and ordering-disordering processes.…”

Luminescence and optical absorption studies of sulphur‐implanted Cu6PS5X (X=I, Br) superionic conductors

“…[3,4]. In the luminescence spectra of Cu 6 PS 5 X (X=I, Br) crystals at low temperatures excitonic and impurityrelated bands are observed with a noticeable quenching at the temperature increase [5]. At the optical absorption edge of Cu 6 PS 5 X (X=I, Br) crystals excitonic bands are revealed.…”