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https://www.nist.gov/news-events/events/2014/12/kesterite-thin-film-solar-cell-absorbers-derived-using-inhomogeneous Kesterite Thin-Film Solar Cell Absorbers Derived Using Inhomogeneous Cu2ZnSnS4 Nanoparticle Inks |... May 13, 2016 - Kesterite is a quaternary/pentenary semiconductor Cu2ZnSn(S,Se)4 (CZTSSe) that consists earth-abundant, low-toxicity thin filmsolar cell https://www.sintef.no/en/publications/publication/0198cc3d62a1-084cda03-999e-4b7e-9885-065030ea11f2/ Sodium doping mechanism on sol-gel processed kesterite Cu2ZnSnS4 thin films - SINTEF sol gel https://kesterite-berlin25.eu/ Kesterite 2025 | Kesterite Berlin 2025 berlin