Kim, Jimin Yang, Wooseok Oh, Yunjung Kim, Joosun Moon, Jooho 2024-01-20T02:31:27Z 2024-01-20T02:31:27Z 2021-09-05 2017-01-15 0925-8388 https://pubs.kist.re.kr/handle/201004/123196 Cu2ZnSnS4 (CZTS), which is non-toxic and abundantly available, is a promising material for fabricating inexpensive large-scale photoelectrochemical (PEC) devices. With the current rapid developments in nanotechnology, one-dimensional (1D) semiconductor nanostructures have been widely investigated because of their short transport distance for photogenerated carriers, large specific surface areas, and efficient optical absorption, all of which are advantageous features. However, PEC devices based on vertical arrays of 1D CZTS nanostructures have not yet been realized. In this study, we report the fabrication of vertically aligned CZTS nanorod arrays using an anodic aluminum oxide template-assisted solution process. The nanorods exhibit a relatively pure phase with a CZTS kesterite structure and cathodic photocurrent response. The surfaces of the CZTS nanorod arrays were decorated with either ZnS or CdS via chemical bath deposition to increase the photocurrent with a positive flat band potential. By analyzing the photocurrent and flat band potential, we gained an insight into the effect of band alignment between the p-type CZTS and the n-type material. (C) 2016 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA CHEMICAL BATH DEPOSITION SURFACE MODIFICATION HYDROGEN EVOLUTION SOLAR-CELLS THIN-FILMS WATER ZNS GROWTH PHOTOVOLTAICS PHOTOCATHODES Template-directed fabrication of vertically aligned Cu2ZnSnS4 nanorod arrays for photoelectrochemical applications via a non-toxic solution process Article 10.1016/j.jallcom.2016.08.293 1 JOURNAL OF ALLOYS AND COMPOUNDS, v.691, pp.457 - 465 JOURNAL OF ALLOYS AND COMPOUNDS 691 457 465 scie scopus 000386227900056 2-s2.0-84985997673 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article CHEMICAL BATH DEPOSITION SURFACE MODIFICATION HYDROGEN EVOLUTION SOLAR-CELLS THIN-FILMS WATER ZNS GROWTH PHOTOVOLTAICS PHOTOCATHODES Photoelectrochemical water splitting CZTS nanorod arrays Anodic aluminum oxide template Surface modification