The synthesis content of high-grade pyrite is introduced as follows:

(1) Green synthesis technology developed the oleylamine oleylamine double-ligand reaction system, using cetyl ammonium trichloride as the surfactant, and successfully prepared high-grade pyrite. Raman spectroscopy further proved the phase structure of the obtained sample. According to the measurement of the absorption spectrum, the band gap is calculated to be about 1.05 eV. By optimizing solvents and additives, smaller spherical nanocrystals (30nm) were obtained, the reaction time was shortened by 15 minutes, and the synthesis cost was reduced.

(2) Hydrothermal synthesis process In order to obtain smaller-sized nanocrystals, a hydrothermal synthesis process for further synthesizing nanocrystals has been developed, which can obtain high-grade pyrite in the temperature range of 140-220 degrees Celsius, and the obtained samples have high purity , Good crystallinity. The effects of reaction time, molar ratio and concentration on nanocrystals were investigated. The surface treatment improved the atmospheric stability of the product, and no oxidation was found for 6 months.

In addition, in order to further realize the morphological control synthesis of crystals, when ferric nitrate and cysteine ​​are used as raw materials and the solvent is pure water, a hollow spherical marcasite can be obtained. In addition, as the reaction time increases, the transition to the pyrite phase gradually occurs, and the morphology changes to a short rod-like structure where a large number of particles are accumulated. Add ethanolamine as a solvent to obtain cubic, flake, two tetradecahedron and other morphological structures.

1. Film preparation and solar cell assembly. High-grade pyrite with surface treatment technology is used to prepare thin films by spin coating. By dispersing in polystyrene-toluene colloid, a film with good uniformity is obtained, but the large thickness and high porosity hinder the absorption rate of the film and the interlayer interpenetration, which reduces the photoelectric response of the battery and is easy to cause Short circuit phenomenon.

   The above is an introduction to the synthesis of high-grade pyrite, thanks for reading.