Chemical bath deposition

About: Chemical bath deposition is a research topic. Over the lifetime, 5676 publications have been published within this topic receiving 111632 citations.

18% Efficiency Cd-Free Cu(In, Ga)Se2 Thin-Film Solar Cells Fabricated Using Chemical Bath Deposition (CBD)-ZnS Buffer Layers

Abstract: Cadmium-free high efficiency Cu(In, Ga)Se2 (CIGS) thin-film solar cells have been fabricated using chemical bath deposition (CBD)-ZnS buffer layers. The use of CBD-ZnS, which is a wider band gap material than CBD-CdS, improved the quantum efficiency at short wavelengths, resulting in an increase in the short circuit current of fabricated solar cells. The best cell at present yielded an active area efficiency of 18.1%, which is the highest value reported previously for CIGS thin film solar cells with alternative buffer layers to CdS.

CdS Quantum Dots-Sensitized TiO2 Nanorod Array on Transparent Conductive Glass Photoelectrodes

Abstract: An oriented single-crystalline TiO2 nanorod or wire array on transparent conductive substrates would be the most desirable nanostructure in preparing photoelectrochemical solar cells because of its efficient charge separation and transport properties as well as superior light harvesting efficiency. In this study, a TiO2 nanorod array film grown directly on transparent conductive glass (FTO) was prepared by a simple hydrothermal method. The formation of CdS quantum dots (QDs) on the vertically aligned TiO2 nanorods photoelectrode was carried out by chemical bath deposition. The as-prepared materials were characterized by scanning electron microscopy, transmission electron microscopy (TEM), high-resolution TEM, and X-ray diffraction. The results indicate that CdS QDs with a diameter smaller than 10 nm are uniformly covered on the surface of the single-crystalline TiO2 nanorods. Under AM 1.5 G illumination, the photoelectrode was found with a photocurrent intensity of 5.778 mA/cm2 at a potential of 0 V versu...

Hierarchically porous NiO film grown by chemical bath deposition via a colloidal crystal template as an electrochemical pseudocapacitor material

Abstract: Hierarchically porous NiO film has been successfully prepared by chemical bath deposition through monolayer polystyrene sphere template. The film possesses an architecture with a substructure of NiO monolayer hollow-sphere array and a superstructure of porous net-like NiO nanoflakes. The pseudocapacitive behavior of the NiO film is investigated by cyclic voltammograms (CV) and galvanostatic charge-discharge tests in 1 M KOH. The hierarchically porous NiO film exhibits weaker polarization, better cycling performance and higher specific capacitance in comparison with the dense NiO film. The specific capacitance of the porous NiO film is 309 F g−1 at 1 A g−1 and 221 F g−1 at 40 A g−1, respectively, much higher than that of the dense NiO film (121 F g−1 at 1 A g−1 and 99 F g−1 at 40 A g−1). The hierarchically porous architecture is responsible for the enhancement of electrochemical properties.

Chemical Solution Deposition of Functional Oxide Thin Films

Abstract: Introduction.-Solution Chemistry Simple alkoxide based precursor systems Carboxylate based precursor systems Single-source precursors Acqueos Precursor Systems Solution Synthesis Strategies.-Analytical Methods Introduction Thermal Analysis NMR Sepctroscopy EXAFS Other Methods (XRM, SEM,TEM scattering methods at nanocrystalline films) Spin-Coating Dip Coating Inkjet Printing and Other Direct Writing Methods(dip point and imprint techniques) Chemical Bath Deposition Polymer Assisted Deposition.-Processing and Crystallization Thermodynamics and Heating Processes Material Systems Dominated by Heterogeneous Nucleation Material Systems Dominated by Homogeneous Nucleation Low Temperature Processing Epitaxial Films Powder Assisted Film Fabrication UV-and E-Beam Direct Patterning of Photosensitive CSD Films Template Controlled Growth.-Functions and Applications Introduction Integrated Capacitors Base Metal Electrodes Polar Oxide Films for MEMS Applications Conducting Films and Electrodes Transparent conducting oxides Superconducting Films Porous Films for Gas Sensors Luminescent Fims.-Appendix Synthesis for Standard material Systems.

Direct evidence of Cd diffusion into Cu(In, Ga)Se2 thin films during chemical-bath deposition process of CdS films

Abstract: The diffusion behavior at the Cu(In, Ga)Se2 (CIGS)/CdS interface of high efficiency CIGS thin film solar cells has been investigated using energy dispersive x-ray spectroscopy (EDX) and transmission electron microscopy. CdS layers were deposited on CIGS thin films using the chemical bath deposition (CBD) process. EDX analysis revealed that Cd was present in the CIGS layer approximately 100 A from the interface boundary. In contrast to the diffusion of Cd, the Cu concentration decreased near the surface of the CIGS film, suggesting substitution of Cd for Cu atoms. These results are direct evidence of Cd diffusion into CIGS thin films during the CBD process.