As part of its scientific activities, the Department of Radiological Technologies at the Faculty of Medical Technologies at the Islamic University of Najaf held a scientific symposium entitled: “Manufacture of a differentiated junction from Cu2ZnSnS4 films by pulsed laser deposition for sensor applications”, for the teacher Dr. Ali Jabbar Al-Abadi, on Sunday 13 June 2021.
The seminar included the following topics:
1- Preparation of thin films of the quaternary semiconductor compound Cu2ZnSnS4 deposited on n-type and p-type silicon substrates for the purpose of fabricating anisotropic and symmetrical junctions as an application for solar cells and photosensitizers.
2- Knowing the type of charge carriers for the quaternary compound Cu2ZnSnS4 and for all the prepared models by examining the models using the Hall effect device.
3- The pulsed laser deposition technique was used, which is a modern and professional technique used to evaporate materials with a high melting point, including the compound used in the research, and this technique has proven its efficiency in depositing thin films within nanoscales.
4- 10 models of dissimilar and symmetrical junctions were manufactured using silicon substrates and thin films of Cu2ZnSnS4 were deposited on them, and then electrical measurements were made on them using a system that measures current and voltage in the case of darkness and light.
5- Knowing the sensitivity of the prepared models in the case of darkness and light, and which is the best efficiency in order to be used as an alternative energy, a solar cell or a photo sensor.
6- The economic feasibility of this work is to manufacture high-efficiency solar cells from the quaternary semiconductor compound Cu2ZnSnS4 and use it as renewable or alternative energy at low cost and high production efficiency. (HTH)