Crystalline structure and optical properties of GaS‐CdS nanocomposite

Abstract

The GaS‐CdS composite has been obtained by intercalation of Cd in GaS single crystalline plates. The XRD analysis show that peaks determined by CdS and CdGa2S4 are found along with GaS characteristic reflection in intercalated samples. The spectral dependence of absorption coefficient for the GaS‐CdS composite is determined by both absorption mechanisms in GaS and in CdS components for α > 103 cm–1. The photoluminescence spectrum (78 K) of the composite consists of radiative recombination bands characteristic for both CdS and GaS. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Optical and Photoelectric Properties of Nanolamellar Structures Obtained by Thermal Annealing of InSe Plates in Zn Vapours

“…The thermal annealing (TA) of gallium and indium monochalcogenides in normal atmosphere, or in oxygen‐enriched atmosphere, leads to the formation of their crystalline micro and nanocomposites with In 2 O 3 and Ga 2 O 3 oxides . As we demonstrated in our previous works, crystalline composites consisting of A II B VI and A III B VI semiconductors, with physical properties characteristic for these compounds, can be obtained by TA of the A III B VI (GaS, GaSe, GaTe and InSe) and semiconductors (e.g., Ga 2 S 3 ) in Cd and Zn vapours …”

Photoelectric and photoluminescence properties of CdTe–GaTe composite

“…Its single crystals are composed of layered atomic packings of Te–Ga–Ga–Te type with strong bonds of ionic‐covalent type inside packings and weak van der Waals polarization bonds between them . Packings are so disposed to one another that cracks are formed between them, in which atoms and molecules can easily intercalate . The van der Waals planes are free of dangling bonds and prove to be very inert to chemical reactions .…”