scholarly journals Enhanced Photoelectrochemical Response from Copper Antimony Zinc Sulfide Thin Films on Transparent Conducting Electrode

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Prashant K. Sarswat ◽  
Michael L. Free
Keyword(s):  
Thin Films ◽  
Cost Effective ◽  
Processing Parameters ◽  
Photoelectrochemical Performance ◽  
Antimony Sulfide ◽  
Photoelectrochemical Response ◽  
Absorber Material ◽  
Film Electrolyte ◽  
Zinc Addition ◽  
Copper Zinc

Copper antimony sulfide (CAS) is a relatively new class of sustainable absorber material, utilizing cost effective and abundant elements. Band gap engineered, modified CAS thin films were synthesized using electrodeposition and elevated temperature sulfurization approach. A testing analog of copper zinc antimony sulfide (CZAS) film-electrolyte interface was created in order to evaluate photoelectrochemical performance of the thin film of absorber materials. Eu3+/Eu2+redox couple was selected for this purpose, based on its relative band offset with copper antimony sulfide. It was observed that zinc has a significant effect on CAS film properties. An enhanced photocurrent was observed for CAS film, modified with zinc addition. A detailed investigation has been carried out by changing stoichiometry, and corresponding surface and optical characterization results have been evaluated. A summary of favorable processing parameters of the films showing enhanced photoelectrochemical response is presented.

scholarly journals Aerosol-Deposited BiVO4 Photoelectrodes for Hydrogen Generation

2020 ◽  
Author(s):  
Charline Wolpert ◽  
Thomas Emmler ◽  
Maria Villa Vidaller ◽  
Andreas Elsenberg ◽  
Kentaro Shinoda ◽  
...  
Keyword(s):  
Thin Films ◽  
Water Splitting ◽  
Hydrogen Generation ◽  
Renewable Energy Sources ◽  
Cold Spraying ◽  
Cost Effective ◽  
Aerosol Deposition ◽  
Bismuth Vanadate ◽  
Oxide Semiconductor ◽  
Photoelectrochemical Performance

Abstract Hydrogen generation from renewable energy sources will play a key role in the concerted endeavor to constrain climate change. One environmentally friendly route, powered by sunlight, is the photoelectrochemical water splitting cell (PEC). This technology employs electrodes coated with thin films of semiconductor materials to capture light and generate charge carriers that directly drive the water splitting reaction. Bismuth vanadate is a promising metal oxide semiconductor, as it absorbs visible light, and is abundant, non-toxic and cost-effective. The present study investigates the formation of bismuth vanadate thin films by the aerosol deposition (AD) method. Operating with layer formation at room temperature, AD offers advantages over other routes for the fabrication of photoactive thin film coatings, as no binders or sintering processes need to be applied. Furthermore, compared to traditional cold spraying, micrometer-sized particles can be used, resulting in coatings with thicknesses below 1 µm. Additionally, the lower kinetic energy of the feedstock powder particles enables the use of delicate substrates, such as FTO-coated glass, expanding the range of possible PEC device configurations. The process parameters explored in this study had considerable influence on the resulting coating microstructure, which in turn showed a significant impact on the photoelectrochemical performance.

Vapor‐Transport‐Deposited Orthorhombic‐SnSe Thin Films: A Potential Cost‐Effective Absorber Material for Solar‐Cell Application

Solar RRL ◽  
2021 ◽  
Author(s):  
Raju Nandi ◽  
Pravin S. Pawar ◽  
KrishnaRao Eswar Neerugatti ◽  
Jae Yu Cho ◽  
Seongheon Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cell ◽  
Cost Effective ◽  
Vapor Transport ◽  
Potential Cost ◽  
Solar Cell Application ◽  
Absorber Material

Thin films of copper antimony sulfide: A photovoltaic absorber material

2015 ◽  
Vol 61 ◽  
pp. 215-225 ◽  
Author(s):  
R.E. Ornelas-Acosta ◽  
S. Shaji ◽  
D. Avellaneda ◽  
G.A. Castillo ◽  
T.K. Das Roy ◽  
...  
Keyword(s):  
Thin Films ◽  
Antimony Sulfide ◽  
Absorber Material

Cost Effective Synthesis and Fabrication of Phase-Pure Kesterite Cu2-xZn1.3SnS4 P-type Absorber Layer Thin Films by Solvent Based Process Technique for Photovoltaic Solar Energy Applications

2018 ◽  
Vol 7 (4) ◽  
pp. 36
Author(s):  
B. Khadambari ◽  
S. S. Bhattacharya
Keyword(s):  
Solar Energy ◽  
Renewable Energy Sources ◽  
Cost Effective ◽  
Absorber Layer ◽  
Window Layer ◽  
Energy Applications ◽  
Process Technique ◽  
Absorber Material ◽  
Effective Synthesis ◽  
P Type

Solar has become one of the fastest growing renewable energy sources. With the push towards sustainability it is an excellent solution to resolve the issue of our diminishing finite resources. Alternative photovoltaic systems are of much importance to utilize solar energy efficiently. The Cu-chalcopyrite compounds CuInS2 and CuInSe2 and their alloys provide absorber material of high absorption coefficients of the order of 105 cm-1. Cu2ZnSnS4 (CZTS) is more promising material for photovoltaic applications as Zn and Sn are abundant materials of earth’s crust. Further, the preparation of CZTS-ink facilitates the production of flexible solar cells. The device can be designed with Al doped ZnO as the front contact, n-type window layer (e.g. intrinsic ZnO); an n-type thin film buffer layer (e.g. CdS) and a p-type CZTS absorber layer with Molybdenum (Mo) substrate as back contact. In this study, CZTS films were synthesized by a non-vaccum solvent based process technique from a molecular-ink using a non toxic eco-friendly solvent dimethyl sulfoxide (DMSO). The deposited CZTS films were optimized and characterized by XRD, UV-visible spectroscopy and SEM.

Deposition time dependent study of structural and optical properties of PbS thin films grown by CBD method

2020 ◽  
Vol 13 ◽  
Author(s):  
Minakshi Chaudhary ◽  
Yogesh Hase ◽  
Ashwini Punde ◽  
Pratibha Shinde ◽  
Ashish Waghmare ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Band Gap ◽  
Deposition Time ◽  
Secondary Growth ◽  
Cost Effective ◽  
Xrd Analysis ◽  
Structural Morphology ◽  
Glass Substrates ◽  
Cbd Method

: Thin films of PbS were prepared onto glass substrates by using a simple and cost effective CBD method. Influence of deposition time on structural, morphology and optical properties have been investigated systematically. The XRD analysis revealed that PbS films are polycrystalline with preferred orientation in (200) direction. Enhancement in crystallinity and PbS crystallite size has been observed with increase in deposition time. Formation of single phase PbS thin films has been further confirmed by Raman spectroscopy. The surface morphology analysis revealed the formation of prismatic and pebble-like PbS particles and with increase in deposition time these PbS particles are separated from each other without secondary growth. The data obtained from the EDX spectra shows the formation of high-quality but slightly sulfur rich PbS thin films over the entire range of deposition time studied. All films show increase in absorption with increase in deposition time and a strong absorption in the visible and sub-band gap regime of NIR range of the spectrum with red shift in band edge. The optical band gap shows decreasing trend, as deposition time increases but it is higher than the band gap of bulk PbS.

scholarly journals Strong texture tuning along different crystalline directions in glass-supported CeO2 thin films by ultrasonic spray pyrolysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Inti Zumeta-Dubé ◽  
José Manuel García Rangel ◽  
Jorge Roque ◽  
Issis Claudette Romero-Ibarra ◽  
Mario Fidel García Sánchez
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Technique ◽  
Morphological Characteristics ◽  
Ultrasonic Spray Pyrolysis ◽  
Cost Effective ◽  
Growth Direction ◽  
Large Area ◽  
Smart Windows ◽  
Ultrasonic Spray

AbstractThe strong facet-dependent performance of glass-supported CeO2 thin films in different applications (catalysis, smart windows, etc.) has been the target of diverse fundamental and technological approaches. However, the design of accurate, cost-effective and scalable methods with the potential for large-area coverage that produce highly textured glass-supported CeO2 thin films remains a technological challenge. In the present work, it is demonstrated that under proper tuning conditions, the ultrasonic spray pyrolysis technique enables one to obtain glass-supported polycrystalline CeO2 films with noticeable texture along both the (100) and (111) directions, as well as with randomly oriented crystallites (no texture). The influence of flow rates, solution molarity, and substrate temperature on the texture and morphological characteristics, as well as optical absorption and Raman response of the deposited films, is evaluated. The obtained results are discussed on the basis of the combined dependence of the CeO2-exposed surfaces on the thermodynamic stability of the corresponding facets and the reaction kinetics, which modulate the crystallite growth direction.

scholarly journals Chemical Solution Deposition of La-Substituted BiFe0.5Sc0.5O3 Perovskite Thin Films on Different Substrates

Coatings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 307
Author(s):  
Diana Griesiute ◽  
Dovydas Karoblis ◽  
Lina Mikoliunaite ◽  
Aleksej Zarkov ◽  
Andrei N. Salak ◽  
...  
Keyword(s):  
Thin Films ◽  
Chemical Solution Deposition ◽  
Cost Effective ◽  
Deposition Process ◽  
Stability Study ◽  
Fused Silica ◽  
Chemical Solution ◽  
Solution Deposition ◽  
Optimal Annealing Temperature ◽  
Xrd Patterns

In the present work, polycrystalline Bi0.67La0.33Fe0.5Sc0.5O3 thin films were synthesized using a simple and cost-effective chemical solution deposition process employing the spin coating technique. In order to check the feasibility of the fabrication of thin films on various types of substrates, the films were deposited on Pt-coated silicon, silicon, sapphire, corundum, fused silica and glass. Based on the results of thermogravimetric analysis of precursor and thermal stability study, it was determined that the optimal annealing temperature for the formation of perovskite structure is 600 °C. It was observed that the relative intensity of the pseudocubic peaks (001)p and (011)p in the XRD patterns is influenced by the nature of substrates, suggesting that the formed crystallites have some preferred orientation. Roughness of the films was determined to be dependent on the nature of the substrate.

Improved UV Photodetection of Terbium-doped NiO thin films prepared by cost-effective nebulizer spray technique

2021 ◽  
Vol 127 ◽  
pp. 105673
Author(s):  
M. Dharani Devi ◽  
A. Vimala Juliet ◽  
K. Hariprasad ◽  
V. Ganesh ◽  
H. Elhosiny Ali ◽  
...  
Keyword(s):  
Thin Films ◽  
Cost Effective ◽  
Spray Technique ◽  
Nebulizer Spray

scholarly journals Hafnium Zirconium Oxide Thin Films for CMOS Compatible Pyroelectric Infrared Sensors

2021 ◽  
Vol 6 (1) ◽  
pp. 27
Author(s):  
Clemens Mart ◽  
Malte Czernohorsky ◽  
Kati Kühnel ◽  
Wenke Weinreich
Keyword(s):  
Thin Films ◽  
Lead Zirconate Titanate ◽  
Cost Effective ◽  
Atomic Layer ◽  
Lead Zirconate ◽  
Temperature Oscillation ◽  
Current Profile ◽  
Infrared Sensors ◽  
Integrated Sensor ◽  
Ferroelectric Hysteresis

Pyroelectric infrared sensors are often based on lead-containing materials, which are harmful to the environment and subject to governmental restrictions. Ferroelectric Hf1−xZrxO2 thin films offer an environmentally friendly alternative. Additionally, CMOS integration allows for integrated sensor circuits, enabling scalable and cost-effective applications. In this work, we demonstrate the deposition of pyroelectric thin films on area-enhanced structured substrates via thermal atomic layer deposition. Scanning electron microscopy indicates a conformal deposition of the pyroelectric film in the holes with a diameter of 500 nm and a depth of 8 μm. By using TiN electrodes and photolithography, capacitor structures are formed, which are contacted via the electrically conductive substrate. Ferroelectric hysteresis measurements indicate a sizable remanent polarization of up to 331 μC cm−2, which corresponds to an area increase of up to 15 by the nanostructured substrate. For pyroelectric analysis, a sinusoidal temperature oscillation is applied to the sample. Simultaneously, the pyroelectric current is monitored. By assessing the phase of the measured current profile, the pyroelectric origin of the signal is confirmed. The devices show sizable pyroelectric coefficients of −475 μC m−2 K−1, which is larger than that of lead zirconate titanate (PZT). Based on the experimental evidence, we propose Hf1−xZrxO2 as a promising material for future pyroelectric applications.

Effects of processing parameters on laser ablated thin films of Y1Ba2Cu3O7−x

1992 ◽  
Author(s):  
S. Mahajan ◽  
R. L. Capelletti ◽  
D. C. Ingram
Keyword(s):  
Thin Films ◽  
Processing Parameters
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