| Authors | Mahdiyeh Esmaeili-Zare, Mohsen Behpour |
|---|---|
| Journal | i n t e r n a t i o n a l journal o f hydrogen energy |
| Presented by | kashan |
| Page number | 8 2 7 3 2 8 1 |
| Volume number | 45 |
| Paper Type | Full Paper |
| Published At | 13-1-2020 |
| Journal Grade | ISI |
| Journal Type | Typographic |
| Journal Country | Aruba |
Abstract
In this paper, the CuInS2 films were firstly modified with CdS and CdS/ZnO/ZnO:Al/Au
layers in order to improve the photoelectrochemical (PEC) water splitting efficiency. The
CuInS2 photoelectrode was synthesized by electrodeposition method as a facial and green
method, on the FTO substrate. The effects of pH and concentration of Na2S electrolyte
solution on the photocurrent density of photoelectrode samples were studied. As a p-n
junction photocathode, the CIS/CdS/ZnO/ZnO:Al/Au photoelectrode indicates the
enhanced PEC activity. The photocurrent density of CIS/CdS/ZnO/ZnO:Al/Au photoelectrode
reaches to 1.91 mA/cm2, while is about 2.5 times higher than that for CuInS2 film
at pH ¼ 8 (0.6 V vs Ag/AgCl). The formation of a p-n junction at the CuInS2 photoelectrode
surface not only reduces the recombination of electron-hole pairs but also increases the
PEC response and water splitting performance of the as-prepared CIS/CdS/ZnO/ZnO:Al/Au
photoelectrode.
tags: CIS/CdS Electrodeposition Photocathode p-n junction Surface modification Solar hydrogen