Kesterite Inorganic-Organic Heterojunction for Solution Processable Solar Cells. (20th May 2016)

• Record Type: Journal Article
• Authors: Data, P.; Bialoglowski, M.; Lyzwa, K.; Bacewicz, R.; Dluzewski, P.; Lapkowski, M.; Gregorkiewicz, T.; Podsiadlo, S.; Monkman, A.P.
• Is Part Of: Electrochimica acta. Volume 201(2016)
• Page Start: 78
• Page End: 85
• Publication Date: 2016-05-20
• Subjects: solar cells -- kesterite -- P3HT -- phenoxazine -- electrochemistry; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.03.132
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: New synthesis of solution processable kesterite and kesterite-phenoxazine nanopowders were presented. The direct band-gap semiconductor Cu2 ZnSnS4 has attracted the attention of many due to its large absorption coefficient (α > 10 4 cm −1 ) and (optical) band-gap energy close to the optimal value for solar light conversion (1.4–1.6 eV). The presence of a kesterite nanocrystal structure has been investigated and confirmed by (HR)TEM, X-ray powder diffraction, EDX and EXAFS measurements. Low-temperature photoluminescence (PL) measurements indicate the absence of PL in the Cu2 ZnSnS4 nanocrystals. Electrochemical studies helped to prove that an inorganic-organic heterojunction of nanokesterite-phenoxazine was obtained. Device studies showed a two fold improvement in efficiency upon addition of a kesterite or phenoxazines-kesterite layer.