Search

Your search keyword '"Donato Spoltore"' showing total 2 results
Start Over Author "Donato Spoltore" Publisher mdpi ag
2 results on '"Donato Spoltore"'

1. A Review on the Fundamental Properties of Sb2Se3-Based Thin Film Solar Cells

Author

Alessio Bosio, Gianluca Foti, Stefano Pasini, and Donato Spoltore

Subjects
solar cells, thin film, Sb2Se3, Sb2S3, deposition techniques, Technology
Abstract

There has been a recent surge in interest toward thin film-based solar cells, specifically new absorber materials composed by Earth-abundant and non-toxic elements. Among these materials, antimony selenide (Sb2Se3) is a good candidate due to its peculiar properties, such as an appropriate bandgap that promises a theoretical maximum power conversion efficiency of 33% and an absorption coefficient of around 105 cm−1, enabling its use as a thin film absorber layer. However, charge carrier transport has been revealed to be problematic due to its cumbersome structure and the lack of a doping strategy. In this work, we aim to provide a clear picture of the state-of-the-art regarding research on Sb2Se3-based solar cells and its prospects, from the successful achievements to the challenges that are still to be overcome. We also report on the key parameters of antimony selenide with a close focus on the different characteristics associated with films grown from different techniques.

Published
2023
Full Text
View/download PDF

2. Sb2Se3 Polycrystalline Thin Films Grown on Different Window Layers

Author

Stefano Pasini, Donato Spoltore, Antonella Parisini, Gianluca Foti, Stefano Marchionna, Salvatore Vantaggio, Roberto Fornari, and Alessio Bosio

Subjects
ZnCdS, thin film, solar cells, Materials Chemistry, Surfaces and Interfaces, CdS, texture coefficient, Sb2Se3, Surfaces, Coatings and Films
Abstract

Sb2Se3 is a typical V2VI3 binary chalcogenide compound characterized by a single crystalline phase and a fixed composition. Sb2Se3 displays a narrow energy gap ranging from 1.1 to 1.3 eV, which are quite optimal values for single-junction solar cells. Earth-abundant and non-toxic components make this material a good candidate for low-cost thin-film solar cells. In substrate configuration, a world record efficiency of 9.2% was recently obtained. Sb2Se3 thin films exhibit an accentuated predisposition to form (Sb4Se6)n ribbons along the [001] direction. This anisotropy heavily influences the charge transport of the photogenerated carriers. In this work, structural characterization of the Sb2Se3 films showed that the crystalline quality and preferential orientation are strongly dependent on the window layer used. To better understand the growth mechanism, Sb2Se3 thin films were deposited by close-spaced sublimation on five different window layers, such as CdS, CdS:F, CdSe, As2S3, and ZnCdS. Sb2Se3-based solar cells, realized in superstrate configuration on these different substrates, evidently demonstrate the influence of the Sb2Se3 preferential orientation on the photovoltaic parameters.

Published
2023
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results