Dynamic Speciation Modeling to Guide Selection of Complexing Agents for Chemical Bath Deposition: Case Study for ZnS Thin Films

2015 ◽  
Vol 15 (10) ◽  
pp. 4893-4900 ◽  
Author(s):  
Borirak Opasanont ◽  
Jason B. Baxter
Keyword(s):  
Thin Films ◽  
Chemical Bath Deposition ◽  
Complexing Agents ◽  
Selection Of

Characterization of ZnS Thin Films Grown Using Chemical Bath Deposition with Three Different Complexing Agents

2018 ◽  
Vol 18 (9) ◽  
pp. 6294-6299 ◽  
Author(s):  
Sang Yong Park ◽  
Jeong Eun Park ◽  
Taewoo Eom ◽  
Jeong Hun Park ◽  
Jackson Bweupe ◽  
...  
Keyword(s):  
Thin Films ◽  
Chemical Bath Deposition ◽  
Complexing Agents

Zinc Sulfide Nanoscaled Buffer Layers for Cu(In,Ga)Se2 Thin Film Solar Cells by Chemical Bath Deposition

2008 ◽  
Vol 51 ◽  
pp. 125-130 ◽  
Author(s):  
Rong Fuh Louh ◽  
Warren Wu
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solar Cells ◽  
Zinc Sulfide ◽  
Chemical Bath Deposition ◽  
Energy Gap ◽  
Buffer Layers ◽  
Thin Film Solar Cells ◽  
Complexing Agents ◽  
Study Results

Chemical bath deposition (CBD) is a fairly simple synthetic route to prepare II-VI semicondutive zinc sulfide thin films, which can be prepared on the flat surface of glass or silicon wafer substrates in the solution containing the precursors of zinc and sulfur ions in terms of ambient conditions of varying acidity. This study particularly aims at the growth dependence and optical property of ZnS thin films in the CBD process by different experiment parameters, whereas we intend to choose suitable types of zinc ionic precursors to be coupled with various CBD parameters such as reaction temperature and time, precursor concentration, types and complexing agents as well as post-deposition heat treatment conditions. Addition of different concentration of ethylenediamine, ammonium sulfate, sodium citrate and hydrazine in the CBD reaction process was used to control the adequate growth rate of ZnS thin films. As a consequence, the rapid thermal annealing was employed to enhance the film uniformity and thickness evenness, transmittance and the energy gap of ZnS samples. The results would lead to a potential application of buffer layer for the Cu (In,Ga)Se2 based thin film solar cells. The analytic instrument including SEM, AFM, UV-VIS were used to examine the CBD-derived nanosized ZnS buffer layers for the thin film solar cells. The ZnS thin films prepared by the chemical bath deposition in this study results in film thickness of 80 ~ 100 nm, high transmittance of 80~85% and the energy gap of 3.89 ~ 3.98 eV.

STUDY OF CHEMICAL BATH DEPOSITION OF ZnS THIN FILMS WITH SUBSTRATE VIBRATION

2008 ◽  
Vol 15 (06) ◽  
pp. 821-827 ◽  
Author(s):  
Z. Q. BIAN ◽  
X. B. XU ◽  
J. B. CHU ◽  
Z. SUN ◽  
Y. W. CHEN ◽  
...  
Keyword(s):  
Thin Films ◽  
Hydrazine Hydrate ◽  
Chemical Bath Deposition ◽  
Visible Region ◽  
Hexagonal Structure ◽  
Complexing Agents ◽  
X Ray Diffraction ◽  
Glass Substrates ◽  
Alkaline Conditions ◽  
Zns Films

An improved chemical bath deposition (CBD) technique has been provided to prepare zinc sulfide ( ZnS ) thin films on glass substrates deposited at 80–82°C using a mixed aqueous solution of zinc sulfate, ammonium sulfate, thiourea, hydrazine hydrate, and ammonia at the alkaline conditions. Both the traditional magnetic agitation and the substrates vibration by hand frequently were done simultaneously during the deposition. The substrates vibration reduced the formation and residence of gas bubbles on the glass substrates during growth and resulted in growth of clean ZnS thin films with high quality. Ammonia and hydrazine hydrate were used as complexing agents. It is found that hydrazine hydrate played an important role in growth of ZnS films. The structure and microstructure of ZnS films were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and UV-vis spectroscopic methods. The XRD showed a hexagonal structure. The formed ZnS films exhibited good optical properties with high transmittance in the visible region and the band gap value was estimated to be 3.5–3.70 eV.

Effects of Complexing Agents on the Chemical Bath Deposition of Uniform Cu2ZnSnS4 Thin Films

2015 ◽  
Vol 7 (9) ◽  
pp. 729-733 ◽  
Author(s):  
Vinaya Kumar Arepalli ◽  
Kiran Kumar Challa ◽  
Eui-Tae Kim
Keyword(s):  
Thin Films ◽  
Chemical Bath Deposition ◽  
Complexing Agents

Role of complexing agents in chemical bath deposition of lead sulfide thin films

2014 ◽  
Vol 121 ◽  
pp. 19-21 ◽  
Author(s):  
A. Carrillo-Castillo ◽  
R.C. Ambrosio Lázaro ◽  
A. Jimenez-Pérez ◽  
C.A. Martínez Pérez ◽  
E.C. de la Cruz Terrazas ◽  
...  
Keyword(s):  
Thin Films ◽  
Chemical Bath Deposition ◽  
Lead Sulfide ◽  
Complexing Agents

ERDA analysis of ZnSx(OH)y thin films obtained by chemical bath deposition

2001 ◽  
Vol 668 ◽  
Author(s):  
Sven Neve ◽  
Wolfgang Bohne ◽  
Jörg Röhrich ◽  
Roland Scheer
Keyword(s):  
Thin Films ◽  
Chemical Bath Deposition ◽  
Zinc Acetate ◽  
Film Formation ◽  
Complexing Agents ◽  
Elastic Recoil ◽  
Elastic Recoil Detection Analysis ◽  
High Ph ◽  
Elastic Recoil Detection ◽  
Detection Analysis

ABSTRACTThin films of Zn-compounds grown in a chemical bath have been studied by Elastic Recoil Detection Analysis (ERDA). The bath contained zinc acetate, thiourea and complexing agents such as ammonia and hydrazine. Large amounts of hydrogen and oxygen are detected within all samples. A strong effect of the pH of the solution is revealed: At high pH (>11.5) mainly ZnS growth takes place, while at lower pH Zn(OH)2 is the dominant product. Hence the pH of the solution can be used to adjust the film stoichiometry. Deposition of Zn-compound films is possible without ammonia in the solution while presence of hydroxide ions and hydrazine species is necessary. It is proposed that film formation takes place via a complex combining hydrazine and hydroxide ligands.

Investigation of chemical bath deposition of CdO thin films using three different complexing agents

2011 ◽  
Vol 257 (22) ◽  
pp. 9237-9242 ◽  
Author(s):  
Hani Khallaf ◽  
Chia-Ta Chen ◽  
Liann-Be Chang ◽  
Oleg Lupan ◽  
Aniruddha Dutta ◽  
...  
Keyword(s):  
Thin Films ◽  
Chemical Bath Deposition ◽  
Complexing Agents ◽  
Cdo Thin Films
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