| 1. |
- Zyoud, Ahed, et al.
(författare)
-
CdS/FTO thin film electrodes deposited by chemical bath deposition and by electrochemical deposition : A comparative assessment of photo-electrochemical characteristics
- 2013
-
Ingår i: Solid State Sciences. - : Elsevier. - 1293-2558 .- 1873-3085. ; 18, s. 83-90
-
Tidskriftsartikel (refereegranskat)abstract
- CdS thin films have been deposited onto FTO/glass substrates by two different techniques, electro-chemical deposition (ECD) and chemical bath deposition (CBD). Feasibility of using these two film types in photoelectrochemical processes has been critically investigated here. The films were comparatively characterized by a number of techniques (solid state absorption spectra, solid state photoluminescence spectra, XRD and SEM). PEC characteristics of the electrodes, including current density voltage (J-V) plots, conversion efficiency (eta), stability and fill-factor (FF) were then studied. The results show that both systems involved nano-sized CdS particles living in coagulates. The ECD was thinner and more uniform than the CBD system. The CBD films were more effective in PEC processes than the ECD counterparts. Effect of annealing on characteristics of both electrode systems has been investigated. Annealing enhanced both film characteristics, but the CBD was affected to a higher extent, and the annealed CBD film was more effective than the ECD counterpart. (C) 2013 Elsevier Masson SAS. All rights reserved.
|
|
| 2. |
- Zyoud, Ahed, et al.
(författare)
-
Combined electrochemical/chemical bath depositions to prepare CdS film electrodes with enhanced PEC characteristics
- 2013
-
Ingår i: Journal of Electroanalytical Chemistry. - : Elsevier BV. - 0022-0728 .- 1873-2569 .- 1572-6657. ; 707, s. 117-121
-
Tidskriftsartikel (refereegranskat)abstract
- A new method to prepare CdS film electrodes, based on electrochemical deposition (ECD), followed by chemical bath deposition (CBD), is described. The ECD/CBD-CdS film electrodes combine the advantages of both ECD-CdS film (good adherence to FTO/glass substrate) and CBD-CdS film (suitable film thickness) together. The new ECD/CBD electrode showed higher photo-electrochemical (PEC) efficiency and stability than either ECD- or CBD-CdS film electrodes, especially after annealing. Inter-particle connection and uniformity of the ECD/CBD-CdS film were further enhanced by annealing. Consequently, the electrode PEC conversion efficiency and stability were enhanced. The combined preparation technique, followed by annealing, is potentially useful for future manufacturing of CdS and other film electrode systems. (C) 2013 Elsevier B.V. All rights reserved.
|
|
