In situ monitoring the role of citrate in chemical bath deposition of PbS thin films

CrystEngComm ◽  
2016 ◽  
Vol 18 (1) ◽  
pp. 149-156 ◽  
Author(s):  
Sucheta Sengupta ◽  
Maayan Perez ◽  
Alexander Rabkin ◽  
Yuval Golan
Keyword(s):  
Thin Films ◽  
Light Scattering ◽  
Optical Absorption ◽  
Chemical Bath Deposition ◽  
Trisodium Citrate ◽  
In Situ Monitoring ◽  
Cluster Mechanism ◽  
Absorption Measurements

We report the formation of size tunable PbS nanocubes induced by the presence of trisodium citrate during growth of PbS thin films by chemical bath deposition. The presence of citrate induces growth by the cluster mechanism which is monitored by XRD and HRSEM, along with real time light scattering and optical absorption measurements.

In-situ monitoring of CuInSe 2 thin films growth by light scattering

2015 ◽  
Vol 582 ◽  
pp. 276-278 ◽  
Author(s):  
Yoann Robin ◽  
Matthieu Moret ◽  
Sandra Ruffenach ◽  
Roger-Louis Aulombard ◽  
Olivier Briot
Keyword(s):  
Thin Films ◽  
Light Scattering ◽  
In Situ Monitoring

scholarly journals A new method based on diffusive gradients in thin films for in situ monitoring microcystin-LR in waters

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Lei Yao ◽  
Alan D. Steinman ◽  
Xiang Wan ◽  
Xiubo Shu ◽  
Liqiang Xie
Keyword(s):  
Thin Films ◽  
Passive Sampling ◽  
Sampling Method ◽  
Binding Capacity ◽  
Accurate Method ◽  
In Situ Monitoring ◽  
Active Sampling ◽  
Binding Agent ◽  
Diffusive Gradients

AbstractThe passive sampling method of diffusive gradients in thin-films (DGT) was developed to provide a quantitative and time-integrated measurement of microcystin-LR (MC-LR) in waters. The DGT method in this study used HLB (hydrophilic-lipophilic-balanced) material as a binding agent, and methanol as an eluent. The diffusion coefficient of MC-LR was 5.01 × 10−6 cm2 s−1 at 25 °C in 0.45 mm thick diffusion layer. This DGT method had a binding capacity of 4.24 μg per binding gel disk (3.14 cm2), ensuring sufficient capacity to measure MC-LR in most water matrices. The detection limit of HLB DGT was 0.48 ng L−1. DGT coupled to analysis by HPLC appears to be an accurate method for MC-LR monitoring. Comparison of DGT measurements for MC-LR in water and a conventional active sampling method showed little difference. This study demonstrates that HLB-based DGT is a useful tool for in situ monitoring of MC-LR in fresh waters.

scholarly journals Cadmium Sulfide Thin Films Deposited onto MWCNT/Polysulfone Substrates by Chemical Bath Deposition

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
M. Moreno ◽  
G. M. Alonzo-Medina ◽  
A. I. Oliva ◽  
A. I. Oliva-Avilés
Keyword(s):  
Thin Films ◽  
Electric Field ◽  
Cadmium Sulfide ◽  
Chemical Bath Deposition ◽  
Multiwall Carbon Nanotubes ◽  
Low Concentrations ◽  
Average Grain Size ◽  
Cds Thin Films ◽  
Current Electric Field

Cadmium sulfide (CdS) thin films were deposited by chemical bath deposition (CBD) onto polymeric composites with electric field-aligned multiwall carbon nanotubes (MWCNTs). MWCNT/polysulfone composites were prepared by dispersing low concentrations of MWCNTs within dissolved polysulfone (PSF). An alternating current electric field was “in situ” applied to align the MWCNTs within the dissolved polymer along the field direction until the solvent was evaporated. 80 μm thick solid MWCNT/PSF composites with an electrical conductivity 13 orders of magnitude higher than the conductivity of the neat PSF were obtained. The MWCNT/PSF composites were subsequently used as flexible substrates for the deposition of CdS thin films by CBD. Transparent and adherent CdS thin films with an average thickness of 475 nm were obtained. The values of the energy band gap, average grain size, rms roughness, crystalline structure, and preferential orientation of the CdS films deposited onto the polymeric substrate were very similar to the corresponding values of the CdS deposited onto glass (conventional substrate). These results show that the MWCNT/PSF composites with electric field-tailored MWCNTs represent a suitable option to be used as flexible conducting substrate for CdS thin films, which represents an important step towards the developing of flexible systems for photovoltaic applications.

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