A new green synthesis method of CuInS2 and CuInSe2 nanoparticles and their integration into thin films

Abstract

A new green synthesis method of CuInS₂ and CuInSe₂ nanoparticles and their integration into thin filmsAbstract A new preparation method for CuInS 2 and CuInSe 2 nanoparticles synthesis is described without using any organic solvent. Heating Cu, In, and S/Se precursors dissolved in water for 30 min in a microwave oven in the presence of mercapto-acetic acid leads to monodispersed chalcopyrite nanoparticles. No precipitation of these nanoparticles is observed after several months at room temperature. These new materials have been thoroughly characterized to confirm their compositions, sizes, and structure without any filtration. Transmission electron microscopy (TEM) confirmed particle sizes below 5 nm. Energy dispersive X-ray analysis (EDXA) confirmed the chemical composition of these samples. X-ray diffraction (XRD) showed a chalcopyritetype structure with crystallite size of about 2 nm.

Transformation of Indium and Gallium Metal into Mixed Group 11/13 Ternary Sulfide Nanoparticles by Using a Dithioic Acid

“…Currently, a variety of synthetic methods are available for the synthesis of mixed Group 11/13 ternary chalcogenide nanoparticles including hydrothermal, solvothermal, hot injection, solution decomposition, and microwave irradiation . This latter method has attracted particular attention because of improvements in reaction times, purity, and reproducibility .…”

Growth and characterization of chalcopyrite CuInSe2 nanoparticles

“…The compound semiconductors, particularly CuInX 2 (X = S, Se) have several desirable features as absorbers in thin film solar cells due to their direct band gap (*1.05 eV), high absorption coefficient and good radiation stability [1][2][3][4], making them a promising material for solar cell applications. There are several diversified techniques to fabricate CuInSe 2 (CIS) such as evaporation [5][6][7], sputtering [8][9][10], spray pyrolysis [11,12], chemical method etc. [13][14][15][16][17].…”

Synthesis of CIS Nanoink and Its Absorber Layer without Selenization

“…Recently, synthesis of nanoparticles based on microwave heating is found to be a good technique because of its various advantages, such as shorter reaction time, low level of impurities, high crystallinity, excellent reproducibility, and high yield of product. Bensebaa et al [8] used a microwave synthesis approach to prepare CIS nanoparticles. However, the use of highly toxic Na 2 Se (selenium source) chemicals makes this process incompatible to fabricate CIS absorber layer.…”