Solution combustion synthesis of the KBiFe2O5 phase for photovoltaic applications: The fuel effect on phase formation and powder morphology

Author(s)

Verza, Jhonata Rafael ; Morelli, Marcio Raymundo

• Document type: Journal article
• Source: Journal of Solid State Chemistry; v. 291, p. 12-pg., 2020-11-01.

Abstract

Clean energies have become a growing search for sustainable development, especially solar energy, so the materials responsible for photovoltaic conversion are being widely studied. KBiFe2O5 has been shown to have great potential for photovoltaic applications, but a simple synthesis route should be explored for a better understanding of their formation. Thus, in this work, KBiFe2O5 was synthesized by solution combustion method and studied the type and quantity of fuel used in the reaction system. For the characterization, the techniques of XRD, DSC, MEV, and UV-Vis were used, with this a band gap value of approximately 1.7 eV, which becomes interesting for photovoltaic applications. Therefore, besides an attractive band gap value, it was found that the best fuel for a reaction control is citric acid, which leads to smaller and less agglomerated particles compared to the others studied. (AU)

• FAPESP's process: 18/06232-4 - Synthesis of KBiFe2O5 phase (KBFO) with perovskite type structure with potential for application in solar cells
• Grantee: Jhonata Rafael Verza
• Support Opportunities: Scholarships in Brazil - Master