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Scalably synthesized environmentally benign, aqueous-based binary nanoparticle inks for Cu2ZnSn(S,Se)(4) photovoltaic cells achieving over 9% efficiency

Title
Scalably synthesized environmentally benign, aqueous-based binary nanoparticle inks for Cu2ZnSn(S,Se)(4) photovoltaic cells achieving over 9% efficiency
Authors
Kim, Ki JoongPan, ChangqingBansal, ShaluMalhotra, RajivKim, Dae HwanChang, Chih Hung
DGIST Authors
Kim, Dae Hwan
Issue Date
2017-04
Citation
Sustainable Energy & Fuels, 1(2), 267-274
Type
Article
Article Type
Article
Keywords
FILM SOLAR-CELLSTHIN-FILMSPRINTED CHALCOPYRITEELECTRONIC-STRUCTURELOW-COSTNANOCRYSTALSFABRICATIONDEPOSITIONDEVICE
ISSN
2398-4902
Abstract
Low-cost materials, scalable manufacturing, and high power conversion efficiency are critical enablers for large-scale applications of photovoltaic (PV) cells. Cu2ZnSn(S, Se)(4) (CZTSSe) has emerged as a promising PV material due to its low-cost earth-abundant nature and the low toxicity of its constituents. We present a compact and environmentally friendly route for preparing metal sulfide (metals are Cu, Zn, and Sn) nanoparticles (NPs) and optimize their annealing conditions to obtain uniform carbon-free CZTSSe thin films with large grain sizes. Further, the solution-stable binary NP inks synthesized in an aqueous solution with additives are shown to inhibit the formation of secondary phases during annealing. A laboratory-scale PV cell with a Al/AZO/ZnO/CdS/CZTSSe/Mo-glass structure is fabricated without anti-reflective coatings, and a 9.08% efficiency under AM1.5G illumination is demonstrated for the first time. The developed scalable, energy-efficient, and environmentally sustainable NP synthesis approach can enable integration of NP synthesis with emerging large-area deposition and annealing methods for scalable fabrication of CZTSSe PV cells.
URI
http://hdl.handle.net/20.500.11750/5777
DOI
10.1039/c6se00035e
Publisher
ROYAL SOC CHEMISTRY
Related Researcher
Files:
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Collection:
Convergence Research Center for Solar Energy1. Journal Articles


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