Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 115, Issue -, Pages 86-92Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2013.03.029
Keywords
CIS; CIGS; Non-vacuum; Doctor blading; Ink; Formulation
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We developed a new industry-compatible ink-based process to produce efficient chalcopyrite CuIn1-x GaxSe2 thin-film solar cells. Metallic In and Ga nanoparticles were produced by purely physical methods, using a low-cost and non-explosive solvent. The solvent acts as a protection against oxidation and can be removed without leaving carbon contamination. We formulated inks that can be safely coated in air by doctor blading. The precursors were converted into a functional absorber after annealing under Se vapors in a primary vacuum. This simple two-step process led to chalcopyrite CuIn1-xGaxSe2 thin-films with strong mechanical adhesion, and power conversion efficiency higher than 7%. (C) 2013 Elsevier B.V. All rights reserved.
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