Additionally, this improves the crystallization quality of the absorber material by generating metallic Ge liquid phase fluxes. Hence, controlling several front-graded bandgap profiles along the CZTSSe absorber thin film layer thickness.įurthermore, by means of generating a rear bandgap graded profile strategy mainly based on the spontaneous cationic substitution during the kesterite (CZTGSe) alloy synthesis, it was possible to reduce the effect of deep defect (SnCu) formation and impose an additional drift (back surface) field within the quasi-neutral region. In this way, the graded bandgap profiling in kesterites is proposed as a sustainable strategy to improve the utilization of the solar spectrum, through the generation of quasi-electric internal fields along the thin films, increasing the drift and diffusion lengths of minority charge and finally improving the power conversion efficiency.įirst of all, by developing a novel and disruptive chalcogenization process for the fabrication of CZTSSe solar cells enabling the generation of a superficial graded compositional profile. In light of this, it possibly to demonstrate that the next generation of kesterite (and chalcopyrite) solar cells power energy conversion efficiency improvements could be remarkably enhanced with the development of novel and more strategic methodologies for collecting photon energy. Consequently, the effect of the front sulfurization of CZTSe solar cell with a realistic experimental compositional profile is analyzed and discussed. This fact is primordially demonstrated with a theoretical numerical modeling simulation (SCAPS-1D) of first front graded bandgap profile attempts in CZTSSe. However, the actual kesterite thin film solar cell devices hinder the actual energy conversion efficiencies of a single absorber layer PN junction. As well as its use in new concepts of energy portability like the Internet of Things, even enhanced when combined with its nanostructured form as a potential thermoelectric material. This is due to its potential to be deposited on flexible substrates, its aesthetics and selective transparency for integrations in construction and automotive sectors. The main subject of this work focuses on the development of advanced technological strategies for bandgap profile engineering on Earth-abundant and eco-friendly kesterite thin film solar cells which potentially optimize and enhance the energy power conversion efficiency of solar cell devices.īy exposing the contemporneuous world energy consumption hassles and its direct implication with the heating imbalance produced by the current greenhouse gas emissions it is doubtlessly notified that renewable energy supplies, mainly based on thin film solar cells, and focused on sustainable materials such as ‘kesterite’ (CZTS), could successfully perform in a wide variety of energy application scenarios.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |