scholarly journals Conversion of WO3 thin films into self-crosslinked nanorods for large-scale ultraviolet detection

RSC Advances ◽  
2020 ◽  
Vol 10 (24) ◽  
pp. 14147-14153 ◽  
Author(s):  
Youngho Kim ◽  
Sang Hoon Lee ◽  
Seyoung Jeong ◽  
Bum Jun Kim ◽  
Jae-Young Choi ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Large Scale ◽  
High Density ◽  
Large Area ◽  
High Quality ◽  
Ultraviolet Detection ◽  
Heat Treated ◽  
Wo3 Thin Films

We heat-treated an amorphous large-area WO3 thin film to synthesize high-density, high-quality WO3 nanorods.

scholarly journals Large-area synthesis of nanoscopic catalyst-decorated conductive MOF film using microfluidic-based solution shearing

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jin-Oh Kim ◽  
Won-Tae Koo ◽  
Hanul Kim ◽  
Chungseong Park ◽  
Taehoon Lee ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
High Surface ◽  
High Surface Area ◽  
Microfluidic Channel ◽  
Microfluidic Channels ◽  
Large Area ◽  
High Quality ◽  
Energy Devices ◽  
Potential Applications

AbstractConductive metal-organic framework (C-MOF) thin-films have a wide variety of potential applications in the field of electronics, sensors, and energy devices. The immobilization of various functional species within the pores of C-MOFs can further improve the performance and extend the potential applications of C-MOFs thin films. However, developing facile and scalable synthesis of high quality ultra-thin C-MOFs while simultaneously immobilizing functional species within the MOF pores remains challenging. Here, we develop microfluidic channel-embedded solution-shearing (MiCS) for ultra-fast (≤5 mm/s) and large-area synthesis of high quality nanocatalyst-embedded C-MOF thin films with thickness controllability down to tens of nanometers. The MiCS method synthesizes nanoscopic catalyst-embedded C-MOF particles within the microfluidic channels, and simultaneously grows catalyst-embedded C-MOF thin-film uniformly over a large area using solution shearing. The thin film displays high nitrogen dioxide (NO2) sensing properties at room temperature in air amongst two-dimensional materials, owing to the high surface area and porosity of the ultra-thin C-MOFs, and the catalytic activity of the nanoscopic catalysts embedded in the C-MOFs. Therefore, our method, i.e. MiCS, can provide an efficient way to fabricate highly active and conductive porous materials for various applications.

scholarly journals Large-area synthesis of nanoscopic catalyst-decorated conductive MOF film using microfluidic-based solution shearing

2021 ◽  
Author(s):  
Jin-Oh Kim ◽  
Won-Tae Koo ◽  
Hanul Kim ◽  
Chungseong Park ◽  
Calvin Hutomo ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
High Surface ◽  
High Surface Area ◽  
Microfluidic Channel ◽  
Microfluidic Channels ◽  
Large Area ◽  
High Quality ◽  
Energy Devices ◽  
Potential Applications

Abstract Conductive metal-organic framework (C-MOF) thin-films have a wide variety of potential applications in the field of electronics, sensors, and energy devices. The immobilization of various functional species within the pores of C-MOFs can further improve the performance and extend the potential applications of C-MOFs thin-films. However, there are currently no effective strategies for facile and scalable synthesis of high quality ultra-thin C-MOFs while simultaneously immobilizing functional species within the MOF pores. Here, we develop microfluidic channel-embedded solution-shearing (MiCS) for ultra-fast (≤ 5 mm/s) and large-area synthesis of high-quality nanocatalyst-embedded C-MOF thin-films with thickness controllability down to tens of nanometers. The MiCS method synthesizes nanoscopic catalyst-embedded C-MOF particles within the microfluidic channels, and simultaneously grows catalyst-embedded C-MOF thin-film uniformly over a large area using solution shearing. The thin-film displays highest nitrogen dioxide (NO2) sensing properties at room temperature in air amongst two-dimensional materials, owing to the high surface area and porosity of the ultra-thin C-MOFs, and the catalytic activity of the nanoscopic catalysts embedded in the C-MOFs. Therefore, our method, i.e. MiCS, can open new avenues of highly active and conductive porous materials for various applications.

scholarly journals Two-Dimensional Crystalline Gridding Networks of Hybrid Halide Perovskite for Random Lasing

Crystals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1114
Author(s):  
Jingyun Hu ◽  
Haibin Xue ◽  
Xinping Zhang
Keyword(s):  
Thin Film ◽  
Large Scale ◽  
Solution Concentration ◽  
Two Dimensional ◽  
Random Lasing ◽  
Large Area ◽  
High Quality ◽  
Strong Light ◽  
Patterned Substrate ◽  
Convenient Technique

We report fabrication of large-scale homogeneous crystallization of CH3NH3PbBr3 (MAPbBr3) in the patterned substrate by a two-dimensional (2D) grating. This achieves high-quality optotelectronic structures on local sites in the micron scales and a homogeneous thin-film device in a centimeter scale, proposing a convenient technique to overcome the challenge for producing large-area thin-film devices with high quality by spin-coating. Through matching the concentration of the MAPbBr3/DMF solutions with the periods of the patterning structures, we found an optimized size of the patterning channels for a specified solution concentration (e.g., channel width of 5 μm for a concentration of 0.14 mg/mL). Such a design is also an excellent scheme for random lasing, since the crystalline periodic networks of MAPbBr3 grids are multi-crystalline constructions, and supply strong light-scattering interfaces. Using the random lasing performance, we can also justify the crystallization qualities and reveal the responsible mechanisms. This is important for the design of large-scale optoelectronic devices based on thin-film hybrid halide perovskites.

scholarly journals A Critical Review on Crystal Growth Techniques for Scalable Deposition of Photovoltaic Perovskite Thin Films

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4851
Author(s):  
Mazhar Abbas ◽  
Linxiang Zeng ◽  
Fei Guo ◽  
Muhammad Rauf ◽  
Xiao-Cong Yuan ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Crystal Growth ◽  
High Performance ◽  
Large Scale ◽  
Film Formation ◽  
Perovskite Solar Cells ◽  
Large Area ◽  
Gas Blowing ◽  
Key Steps

Although the efficiency of small-size perovskite solar cells (PSCs) has reached an incredible level of 25.25%, there is still a substantial loss in performance when switching from small size devices to large-scale solar modules. The large efficiency deficit is primarily associated with the big challenge of coating homogeneous, large-area, high-quality thin films via scalable processes. Here, we provide a comprehensive understanding of the nucleation and crystal growth kinetics, which are the key steps for perovskite film formation. Several thin-film crystallization techniques, including antisolvent, hot-casting, vacuum quenching, and gas blowing, are then summarized to distinguish their applications for scalable fabrication of perovskite thin films. In viewing the essential importance of the film morphology on device performance, several strategies including additive engineering, Lewis acid-based approach, solvent annealing, etc., which are capable of modulating the crystal morphology of perovskite film, are discussed. Finally, we summarize the recent progress in the scalable deposition of large-scale perovskite thin film for high-performance devices.

On‐axis dc magnetron sputtering of large area high quality YBa2Cu3O7superconducting thin films

1992 ◽  
Vol 61 (3) ◽  
pp. 348-350 ◽  
Author(s):  
Y. Z. Zhang ◽  
L. Li ◽  
Y. Y. Zhao ◽  
B. R. Zhao ◽  
J. W. Li ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetron Sputtering ◽  
Dc Magnetron Sputtering ◽  
Large Area ◽  
High Quality

High quality ISD MgO buffers on large scale, flexible metal substrates for RF applications of HTS thin films

2006 ◽  
Vol 19 (11) ◽  
pp. 1118-1123 ◽  
Author(s):  
T Zilbauer ◽  
P Berberich ◽  
A Lümkemann ◽  
K Numssen ◽  
T Wassner ◽  
...  
Keyword(s):  
Thin Films ◽  
Large Scale ◽  
High Quality ◽  
Metal Substrates ◽  
Rf Applications ◽  
Flexible Metal

CVD growth of high-quality and large-area continuous h-BN thin films directly on stainless-steel as protective coatings

2021 ◽  
pp. 100135
Author(s):  
Shuai Jia ◽  
Weibing Chen ◽  
Jing Zhang ◽  
Chen-Yang Lin ◽  
Hua Guo ◽  
...  
Keyword(s):  
Thin Films ◽  
Stainless Steel ◽  
Protective Coatings ◽  
Large Area ◽  
High Quality ◽  
Cvd Growth

CuxSbySz THIN FILMS PRODUCED BY ANNEALING CHEMICALLY DEPOSITED Sb2S3-CuS THIN FILMS

2001 ◽  
Vol 15 (17n19) ◽  
pp. 667-670 ◽  
Author(s):  
Y. RODRÍGUEZ-LAZCANO ◽  
M. T. S. NAIR ◽  
P. K. NAIR
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Optical Band Gap ◽  
Deposition Method ◽  
Photovoltaic Devices ◽  
Large Area ◽  
Electrical And Optical Properties ◽  
Ternary Compounds ◽  
Glass Substrates ◽  
Different Temperatures

The possibility of generating ternary compounds through annealing thin film stacks of binary composition has been demonstrated before. In this work we report a method to produce large area coating of ternary compounds through a reaction in solid state between thin films of Sb2S3 and CuS. Thin films of Sb2S3 -CuS were deposited on glass substrates in the sequence of Sb2S3 followed by CuS (on Sb2S3 ) using chemical bath deposition method. The multilayer stack, thus produced, of approximately 0.5 μm in thickness, where annealed under nitrogen and argon atmospheres at different temperatures to produce films of ternary composition, CuxSbySz . An optical band gap of ~1.5 eV was observed in these films, suggesting that the thin films of ternary composition formed in this way are suitable for use as absorber materials in photovoltaic devices. The results on the analyses of structural, electrical and optical properties of films formed with different combinations of thickness in the multilayers will be discussed in the paper.

scholarly journals Nanotechnological Advances in Catalytic Thin Films for Green Large-Area Surfaces

2015 ◽  
Vol 2015 ◽  
pp. 1-20 ◽  
Author(s):  
Suzan Biran Ay ◽  
Nihan Kosku Perkgoz
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Environmental Remediation ◽  
Transformational Change ◽  
Green Technology ◽  
Large Area ◽  
Thin Film Coatings ◽  
Technology Applications ◽  
Production Techniques ◽  
Save Energy

Large-area catalytic thin films offer great potential for green technology applications in order to save energy, combat pollution, and reduce global warming. These films, either embedded with nanoparticles, shaped with nanostructuring techniques, hybridized with other systems, or functionalized with bionanotechnological methods, can include many different surface properties including photocatalytic, antifouling, abrasion resistant and mechanically resistive, self-cleaning, antibacterial, hydrophobic, and oleophobic features. Thus, surface functionalization with such advanced structuring methods is of significance to increase the performance and wide usage of large-area thin film coatings specifically for environmental remediation. In this review, we focus on methods to increase the efficiency of catalytic reactions in thin film and hence improve the performance in relevant applications while eliminating high cost with the purpose of widespread usage. However, we also include the most recent hybrid architectures, which have potential to make a transformational change in surface applications as soon as high quality and large area production techniques are available. Hence, we present and discuss research studies regarding both organic and inorganic methods that are used to structure thin films that have potential for large-area and eco-friendly coatings.

High quality, highly transparent Cu incorporated WO3 thin films suitable for blue LED application

Vacuum ◽  
2020 ◽  
Vol 172 ◽  
pp. 109044 ◽  
Author(s):  
V.S. Kavitha ◽  
S.R. Chalana ◽  
R. Reshmi Krishnan ◽  
K.G. Gopchandran ◽  
V.P. Mahadevan Pillai
Keyword(s):  
Thin Films ◽  
High Quality ◽  
Blue Led ◽  
Wo3 Thin Films
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