Raman scattering and photoluminescence studies on Cu<inf>2</inf>O

Growth and characterization of Sr-doped Cu2O thin films deposited by metalorganic chemical vapor deposition

“…Two of them are shown in Fig. (1.4 and 14.9% Sr concentration); they are similar and exactly reproduce the Cu 2 O powder Raman spectrum given as a reference in the figure, in agreement with the literature . Only two additional lines can be observed: the line at 520 cm −1 related to the silicon substrate, and a very weak line at 1072 cm −1 only visible for high strontium concentration.…”

“…Raman spectroscopy, a much more local probe which allows to easily distinguish between Cu 2 O and CuO phases , was used to check this statement. Raman spectra were measured for films with various strontium concentrations.…”

p‐CuO/n‐Si heterojunction solar cells with high open circuit voltage and photocurrent through interfacial engineering

“…The peaks at 119, 585, and 970 cm −1 correspond to the formation of CuO , while the peak at 520 cm −1 is from the Si . The peaks associated with Cu 2 O are observed at 161, 218, 305, and 439 cm −1 . The intensity of the Cu 2 O peak at 305 cm −1 is observed to be significantly influenced by annealing time and is more pronounced for the sample annealed for 50 min.…”

Chemical vapor deposition growth of 5 mm hexagonal single-crystal graphene from ethanol

“…Without any oxidation, a peak near 220 cm À1 can be observed, corresponding to the strong Raman spectral feature of Cu 2 O [24], which suggests originally there is a natural oxidation on pristine Cu. After being oxidized, multiple strong peaks in the Raman spectrum were observed, which represents the existence of both CuO and Cu 2 O [24,25]. After heating to 1065°C in Ar and immediately cooling down, these strong peaks of CuO and Cu 2 O disappear, and only the peak at 220 cm À1 remains, which is almost the same as pristine Cu.…”