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Influence of pH and pressure on the microwave-assisted hydrothermal growth of ZnIn2S4

R. BANICA1,2,* , D. URSU1,2, P. LINUL2, T. NYARI1,2, N. VASZILCSIN1

Affiliation

  1. University Politehnica Timisoara, Piata Victoriei 2, 300006 Timisoara, Romania
  2. National Institute for Research and Development in Electrochemistry and Condensed Matter, 1 Plautius Andronescu Street, 300224 Timisoara, Romania

Abstract

ZnIn2S4 microspheres were synthesized hydrothermally in inert environment under controlled pressure. The obtained product was studied as function of pH, pressure and ballast solution type. In the 100-600 kPa range, the inert gas pressure has a large influence on the semiconductor morphology and phase purity. At higher values, the pressure influence no longer has effect. At low pressure, boiling of the solvent occurs and the obtained bubbles maintain the particles in suspension promoting growth of the spheres with low diameter. Finally, a new hypothesis on the formation of ZnIn2S4 microspheres in hydrothermal environment was proposed..

Keywords

Microwave-assisted hydrothermal, ZnIn2S4, Microspheres.

Citation

R. BANICA, D. URSU, P. LINUL, T. NYARI, N. VASZILCSIN, Influence of pH and pressure on the microwave-assisted hydrothermal growth of ZnIn2S4, Optoelectronics and Advanced Materials - Rapid Communications, 9, 3-4, March-April 2015, pp.511-516 (2015).

Submitted at: Dec. 28, 2014

Accepted at: March 19, 2015