CuI Crystal Growth in Acetonitrile Solvent by the Cycle-Evaporation Method

Abstract

Acetonitrile solvent was applied to grow CuI crystals by the cycle-evaporation method with Cu as the reductant. The growth temperature was 70 °C. The process was performed in a nitrogen atmosphere. Clear, millimeter-scaled CuI single crystals were obtained. Moreover, UV-visible spectra, IR spectra, and XRD were used to investigate the redox processes in the solution. The crystal was characterized by X-ray powder diffraction and differential thermal /thermogravimetry analysis.

Large γ-CuI semiconductor single crystal growth by a temperature reduction method from an NH4I aqueous solution

“…To meet this great demand, a variety of routes, including sublimation techniques, flux methods, hydrothermal routes, sol-gel methods and evaporation methods, have been proposed in order to grow this crystal. [11][12][13][14][15][16][17] However, sublimation techniques and flux methods require special set-ups and high growth temperatures, resulting in γ-CuI crystals of poor quality. Hydrothermal routes are performed in sealed systems with high temperatures and pressures, and therefore the growth of crystals can not be observed.…”

One-pot green synthesis of copper(I) iodide nanocrystallites using red cabbage extract and its application for the colorimetric sensing of elemental mercury vapor

“…The DSC curves (Fig. 6A) of the synthesized CuI nanocrystallites displayed two distinct sharp peaks centered at ~380°C and ~403°C which can be assigned for the phase transition of -CuI to -CuI and -CuI to -CuI phases, respectively [1,13,24]. These DSC peaks of the synthesized CuI products referring to phase transitions are comparable to that obtained from the bulk CuI [13,25].…”

Growth habit and optical properties of γ-CuI single crystals via a temperature difference method

“…In order to grow high-quality g-CuI crystal, various approaches have been attempted such as the ux method, sublimation techniques, sol-gel methods, hydrothermal routes and evaporation methods. [4][5][6][7][8][9] However, high quality crystals with great optical properties, such as high transmittance and luminescence emission without the defect band, have been rarely reported. Therefore, it is still a great challenge to explore methods for the growth of g-CuI single crystals with sufficient size for research and practical applications.…”