Kim, Jimin Yang, Wooseok Oh, Yunjung Lee, Hyungsoo Lee, Seonhee Shin, Hyunjung Kim, Joosun Moon, Jooho 2024-01-20T02:03:48Z 2024-01-20T02:03:48Z 2021-09-01 2017-02-07 2050-7488 https://pubs.kist.re.kr/handle/201004/123072 Synthesis of one-dimensional nanostructured chalcogenide compounds using nontoxic and abundant constituents provides an important pathway to the development of commercially feasible photoelectrochemical water splitting. In this study, grass-like Sb2Se3 nanoneedle arrays are successfully fabricated on a substrate via a facile spin-coating method without any complicated processes such as templating, seed formation, or use of a vapor phase. Preferential [001] growth of the initial single-crystalline Sb2Se3 occurs during the first spin-coating, but interfacial defects are generated upon subsequent spin-coating iterations, resulting in annual-ring-like growth of Sb2Se3 nanoneedles. After sequential surface modification with TiO2 and Pt, the resistance to charge transfer from the photoelectrode to the electrolyte decreases significantly, yielding a remarkable record-high photocurrent of 2 mA cm(-2) at 0 V-RHE (4.5 mA cm(-2) at -0.2 V-RHE). English ROYAL SOC CHEMISTRY FILM SOLAR-CELLS THIN-FILM HYDROTHERMAL SYNTHESIS HYDROGEN EVOLUTION NANOWIRES EFFICIENT PHOTOVOLTAICS OPTIMIZATION DEPOSITION CU2ZNSNS4 Self-oriented Sb2Se3 nanoneedle photocathodes for water splitting obtained by a simple spin-coating method Article 10.1039/c6ta09602f 1 JOURNAL OF MATERIALS CHEMISTRY A, v.5, no.5, pp.2180 - 2187 JOURNAL OF MATERIALS CHEMISTRY A 5 5 2180 2187 scie scopus 000395074300043 2-s2.0-85011270535 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article FILM SOLAR-CELLS THIN-FILM HYDROTHERMAL SYNTHESIS HYDROGEN EVOLUTION NANOWIRES EFFICIENT PHOTOVOLTAICS OPTIMIZATION DEPOSITION CU2ZNSNS4 Photocathode Water Spliting Photosynthesis