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A detailed experimental and theoretical study into NaSbS 2 as an emerging solar absorber

DOI: 10.1039/C8TC06284F DOI Help

Authors: Winnie W. Leung (University College London) , Christopher N. Savory (University College London) , Robert Palgrave (University College London; Harwell XPS, Research Complex at Harwell) , David O. Scanlon (University College London; Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Materials Chemistry C

State: Published (Approved)
Published: January 2019

Abstract: As photovoltaics have grown to become one of the dominant renewable energy generating technologies, attention has fallen upon thin-film materials as a route to lightweight, flexible and portable solar cells. NaSbS2 has recently been proposed as a non-toxic, earth abundant solar absorber for thin-film cells. In this study, we use a combined theoretical and experimental approach to characterize and assess the electronic and optical properties of NaSbS2 as a promising solar absorber. Our results, utilising two theoretical efficiency metrics, demonstrate that NaSbS2 may be limited for use in single-junction cells by a forbidden band gap and slow absorption onset. Other features of its electronic structure, however, indicate that the material may still be promising in thermoelectric applications.

Subject Areas: Materials, Chemistry


Technical Areas: