Amorphous germanium(li) sulfide particles obtained by microwave assisted decomposition of germanium (IV) sulfide

The preparation of small, amorphous, and metastable Germanium sulfide GeS particles by using microwave assisted sublimation is discussed. The vitreous GeS2 is formed with the help of rapid quenching of liquid GeS 2. An equilibrium has also been used to calculate the standard molar enthalpy of the formation for GeS2 and for the chemical transport of Ge. The germanium sulfide was prepared using wet chemistry and characterized by its Raman spectrum for checking purity. The particle sizes observed in the experiment are smaller where the sublimation of GeS is carried in Air flow. The increase of the flow rate of the carrier gas leads to a more rapid removal of the particles from the hot subliming system preventing particles agglomeration. The transmission electron microscopy observations indicate the formation of spherical particles that have diameter in the 10-20 nm range.