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A Novel Thermochemical Metal Halide Treatment for High-Performance Sb2Se3 Photocathodes.
Polivtseva, Svetlana; Adegite, Joseph Olanrewaju; Kois, Julia; Mamedov, Damir; Karazhanov, Smagul Zh; Maricheva, Jelena; Volobujeva, Olga.
Afiliación
  • Polivtseva S; Department of Materials and Environmental Technology, TalTech, School of Engineering, Ehitajate tee 5, 19086 Tallinn, Estonia.
  • Adegite JO; Mechanical Engineering Department, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA.
  • Kois J; LLC Auramet, Kalliomäentie 1B, 02920 Espoo, Finland.
  • Mamedov D; Department of Materials Science, National Research Nuclear University (MEPhI), 115409 Moscow, Russia.
  • Karazhanov SZ; Department for Solar Energy, Institute for Energy Technology, NO-2027 Kjeller, Norway.
  • Maricheva J; Department of Materials Science, National Research Nuclear University (MEPhI), 115409 Moscow, Russia.
  • Volobujeva O; Department for Solar Energy, Institute for Energy Technology, NO-2027 Kjeller, Norway.
Nanomaterials (Basel) ; 11(1)2020 Dec 28.
Article en En | MEDLINE | ID: mdl-33379229
The fabrication of cost-effective photostable materials with optoelectronic properties suitable for commercial photoelectrochemical (PEC) water splitting represents a complex task. Herein, we present a simple route to produce Sb2Se3 that meets most of the requirements for high-performance photocathodes. Annealing of Sb2Se3 layers in a selenium-containing atmosphere persists as a necessary step for improving device parameters; however, it could complicate industrial processability. To develop a safe and scalable alternative to the selenium physical post-processing, we propose a novel SbCl3/glycerol-based thermochemical treatment for controlling anisotropy, a severe problem for Sb2Se3. Our procedure makes it possible to selectively etch antimony-rich oxyselenide presented in Sb2Se3, to obtain high-quality compact thin films with a favorable morphology, stoichiometric composition, and crystallographic orientation. The treated Sb2Se3 photoelectrode demonstrates a record photocurrent density of about 31 mA cm-2 at -248 mV against the calomel electrode and can thus offer a breakthrough option for industrial solar fuel fabrication.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2020 Tipo del documento: Article País de afiliación: Estonia Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2020 Tipo del documento: Article País de afiliación: Estonia Pais de publicación: Suiza