Batuk, Maria

Brammertz, G.

Buffi\ue8re, M.

Hadermann, Joke

Koble, C.

Mangin, D.

Meuris, M.

Poortmans, J.

Verbist, C.

Abstract: This work presents a detailed analysis of the microstructure and the composition of our record Cu 2ZnSnSe4 (CZTSe)-CdS-ZnO solar cell with a total area efficiency of 9.7%. The average composition of the CZTSe crystallites is Cu 1.94 Zn 1.12Sn0.95Se3.99. Large crystals of ZnSe secondary phase (up to 400\u2009nm diameter) are observed at the voids between the absorber and the back contact, while smaller ZnSe domains are segregated at the grain boundaries and close to the surface of the CZTSe grains. An underlying layer and some particles of Cu xSe are observed at the Mo-MoSe2-Cu2ZnSnSe4 interface. The free surface of the voids at the back interface is covered by an amorphous layer containing Cu, S, O, and C, while the presence of Cd, Na, and K is also observed in this region

Institutional Repository Universiteit Antwerpen

Microstructural analysis of 9.7% efficient <tex>Cu_{2}ZnSnSe_{4}$</tex> thin film solar cells

Microstructural analysis of 9.7% efficient <tex>Cu_{2}ZnSnSe_{4}$</tex> thin film solar cells

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Institutional Repository Universiteit Antwerpen