Células solares fotovoltaicas sostenibles basadas en Sb2S3

Antimony-chalcogenide materials show unique properties as absorbers for thin-film solar energy harvesting, with high stability, low environmental impact, low cost, low carbon footprint and high technological flexibility. In particular, Sb2(S,Se)3 presents a quasi-1D crystal topology, shows a high absorption coefficient > 105 cm-1, band gap energy Eg tuneable between 1.2 to 1.8 eV, p-type conductivity under Se/S excess, high stability and a much lower melting point than that of CIGSe, CdTe and CZTSSe, requiring lower processing temperatures. The objective of this work is to develop Sb2S3 thin-film solar cells on different substrates for indoor and outdoor PV applications. The postdoctoral researcher will be responsible for the synthesis and characterization of the chalcogenide material by different methods. The properties of the chalcogenide will be investigated by XRD, SEM, EDX, Raman spectroscopy, ellipsometry, PL … The main goal of this project is the optimization of the Sb2S3 thin films to achieve high efficiency solar cells. The investigation will be not only dedicated to the absorber layer, but also to the influence of the ETL and HTL on the final solar cell performance so that the optimal design of the solar cell for indoor and outdoor applications is achieved at the end of the project.