CZTS PHD THESIS

Abstract Cu2ZnSnS4 CZTS quaternary compound has attracted much attention in the last years as new abundant, low cost and non-toxic material, with desirable properties for thin film photovoltaic PV applications. These studies suggested a correlation between the increase of the bandgap energy and the improvement of the material quality, which was also confirmed by the performances of the final devices. The precursors were deposited using two different approaches: PhD thesis, University of Trento. Cu2ZnSnS4 CZTS quaternary compound has attracted much attention in the last years as new abundant, low cost and non-toxic material, with desirable properties for thin film photovoltaic PV applications.

A strong effect of the tin content on the bandgap energy, sub-gap absorption coefficient, crystalline domain and grain size is shown and a model based on the increase of the intrinsic defect density induced by a reduced tin content is proposed. Ateneo Biblioteca Unitn-Eprints Research. The co-sputtering route was demonstrated to be a more successful strategy, assuring a fine-control of the film composition with good process reproducibility. CZTS thin films were then assembled into the solar cells and their properties as absorber layer were optimized by varying both composition and thickness. PhD thesis, University of Trento. Home About User area Help.

  CURRICULUM VITAE ZNACHENIE

In this work, CZTS thin films were grown using two thewis processes, based on vacuum deposition of precursors, followed by a heat treatment in sulphur atmosphere. These studies suggested a correlation between the increase of the bandgap energy and the improvement of the material quality, which was also confirmed by the performances of the final devices. CZTS thin films were then assembled into the solar cells and their properties as absorber layer were optimized by varying both composition and thickness.

czts phd thesis

PhD thesis, University of Trento. A strong effect of the tin content on the bandgap energy, sub-gap absorption coefficient, crystalline domain and grain size is shown and a model based on the increase of the intrinsic defect density induced by a reduced tin content is proposed. Both growth processes were found to give good quality kesterite films, showing CZTS as the main phase, large grains and suitable properties for PV application, phc higher homogeneity and stoichiometry control were achieved using the co-sputtering route.

Abstract Cu2ZnSnS4 CZTS quaternary compound has attracted much attention in the last years as new abundant, low cost and non-toxic material, with desirable properties for thin film photovoltaic PV applications.

  SARAH BAARTMAN ESSAY

czts phd thesis

The co-sputtering route was demonstrated to be a more successful strategy, assuring a fine-control of the film composition with good process reproducibility. Cu2ZnSnS4 CZTS quaternary compound has attracted much attention in the last years as new abundant, low cost and non-toxic material, with desirable properties for thin film photovoltaic PV applications.

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Materials Science and Engineering. The relationship between the absorber layer stoichiometry and the device performances was investigated: A detailed investigation on CZTS optical properties, microstructure, intrinsic defect density and their correlation with the material composition is presented.

The precursors were deposited using two different approaches: A fast improvement of solar cell efficiency was obtained using this approach and a maximum efficiency of 5. CZTS samples produced from stacked evaporated precursors allowed achieving a maximum efficiency of 3.

czts phd thesis

Ateneo Biblioteca Unitn-Eprints Research.