Benign Solutions and Innovative Sequential Annealing Processes for High Performance Cu2ZnSn(Se, S)4 Photovoltaics. Issue 6 (19th November 2013)

• Record Type: Journal Article
• Authors: Hsu, Chia‐Jung; Duan, Hsin‐Sheng; Yang, Wenbing; Zhou, Huanping; Yang, Yang
• Is Part Of: Advanced energy materials. Volume 4:Issue 6(2014:Jun.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2013-11-19
• Subjects: Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201301287
• Languages: English
• ISSNs: 1614-6832

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Solution‐based earth‐abundant Cu₂ZnSn(Se, S)₄ (CZTSSe) is proven to be a promising tool for thin‐film photovoltaic fabrication. Combining fully dissolved copper (Cu) and zinc/tin (Zn/Sn) hydrazinium constituents in an ethanolamine (EA) and dimethylsulfoxide (DMSO) solution mixture forms the CZTS precursor. All solutes in the precursor solution are intermixed on the molecular scale with excellent homogeneity. Sequential annealing steps under chalcogen vapor allow for enhanced grain growth while preventing the back contact from forming an excessively thick Mo(S, Se)₂ layer. The resulting devices achieve power conversion efficiencies of 7.5% under 1 sun conditions.</p> </abstract>