Enhanced Photoluminescence of PPV Thin Film Coated on a Nanostructured Substrate by Glancing Angle Deposition

2004 ◽  
Vol 7 (9) ◽  
pp. H36 ◽  
Author(s):  
T. Karabacak ◽  
C. Wiegand ◽  
J. Senkevich ◽  
T. Lu ◽  
Dongdong Jia ◽  
...  
Keyword(s):  
Thin Film ◽  
Glancing Angle Deposition ◽  
Enhanced Photoluminescence ◽  
Glancing Angle ◽  
Angle Deposition

scholarly journals Structural, chemical and magnetic properties of nickel vertical posts obtained by glancing angle deposition technique

2017 ◽  
Vol 49 (1) ◽  
pp. 73-79
Author(s):  
Jelena Potocnik ◽  
Milos Nenadovic ◽  
Bojan Jokic ◽  
Maja Popovic ◽  
Zlatko Rakocevic
Keyword(s):  
Thin Film ◽  
Magnetic Properties ◽  
Photoelectron Spectroscopy ◽  
Glancing Angle Deposition ◽  
Deposition Technique ◽  
Force Microscopy ◽  
Atomic Force ◽  
Glancing Angle ◽  
Magneto Optical Kerr Effect ◽  
Angle Deposition

In this work, Glancing Angle Deposition technique was used for obtaining nanostructured nickel thin film with vertical posts on glass substrate which was positioned 75 degrees with respect to the substrate normal and rotated with a suitable constant speed. The obtained nickel thin film was characterized by Scanning Electron Microscopy, Atomic Force Microscopy and X-ray Photoelectron Spectroscopy. It was found that the deposited thin film consists of 94.0 at.% of nickel. Magnetic properties of the deposited thin film were determined by Magneto-Optical Kerr Effect Microscopy. According to the obtained coercivity values, it can be concluded that the nickel thin film shows uniaxial magnetic anisotropy.

Simulation of 3D Films Deposited by Glancing Angle Deposition Using 3D-Films

2000 ◽  
Vol 616 ◽  
Author(s):  
T. Smy ◽  
D. Vick ◽  
M. J. Brett ◽  
S. K. Dew ◽  
A. T. Wu ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Three Dimensional ◽  
Thin Film Deposition ◽  
Glancing Angle Deposition ◽  
Film Deposition ◽  
Porous Thin Films ◽  
Glancing Angle ◽  
Memory Resources ◽  
Angle Deposition

AbstractA new fully three dimensional (3D) ballistic deposition simulator 3D-FILMS has been developed for the modeling of thin film deposition and structure. The simulator may be implemented using the memory resources available to workstations. In order to illustrate the capabilities of 3D-FILMS, we apply it to the growth of engineered porous thin films produced by the technique of GLancing Angle Deposition (GLAD).

Thin Film Microstructure Control Using Glancing Angle Deposition by Sputtering

1999 ◽  
Vol 14 (4) ◽  
pp. 1197-1199 ◽  
Author(s):  
J. C. Sit ◽  
D. Vick ◽  
K. Robbie ◽  
M. J. Brett
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Incidence Angle ◽  
Porous Titanium ◽  
Glancing Angle Deposition ◽  
Nanometer Scale ◽  
Glancing Angle ◽  
Deposition By Sputtering ◽  
Titanium Thin Films ◽  
Angle Deposition

Thin films with microstructures controlled on a nanometer scale have been fabricated using a recently developed process called glancing angle deposition (GLAD) which combines oblique angle evaporation with controlled substrate motion. Critical to the production of GLAD thin films is the requirement for a narrow angular flux distribution centered at an oblique incidence angle. We report here recent work with low-pressure, long-throw sputter deposition with which we have succeeded in fabricating porous titanium thin films possessing “zig-zag,” helical, and “pillar” microstructures, demonstrating microstructural control on a level consistent with evaporated GLAD. The use of sputtering for GLAD simplifies process control and should enable deposition of a broader range of thin film materials.

Nanostructured Oxide Films for High-Speed Humidity Sensors

2003 ◽  
Vol 788 ◽  
Author(s):  
John J. Steele ◽  
Kenneth D. Harris ◽  
Michael J. Brett
Keyword(s):  
Thin Film ◽  
High Speed ◽  
Response Times ◽  
Glancing Angle Deposition ◽  
Multiple Response ◽  
Humidity Sensors ◽  
Advanced Technique ◽  
Glancing Angle ◽  
Nanostructured Oxide ◽  
Angle Deposition

ABSTRACTMiniaturized thin film humidity sensors were fabricated using nanostructured materials deposited by an advanced technique known as glancing angle deposition (GLAD). These sensors exhibited extremely fast desorption response times of less than 40 ms to steplike changes in humidity. Multiple response time measurements for various initial humidities have shown that the sensors maintain their rapid response at all levels of humidity.

scholarly journals Multilayer thin film encapsulation for organic light emitting diodes

RSC Advances ◽  
2014 ◽  
Vol 4 (21) ◽  
pp. 10808-10814 ◽  
Author(s):  
Rakhi Grover ◽  
Ritu Srivastava ◽  
M. N. Kamalasanan ◽  
D. S. Mehta
Keyword(s):  
Thin Film ◽  
Glancing Angle Deposition ◽  
Organic Light Emitting Diodes ◽  
Organic Films ◽  
Light Emitting ◽  
Organic Light ◽  
Glancing Angle ◽  
Alternate Layer ◽  
Angle Deposition ◽  
Thin Film Encapsulation

Thin film encapsulation for OLEDs using alternate layer pairs of organic films and magnesium fluoride thin films deposited by normal and glancing angle deposition methods.

Design, Fabrication and Characterization of n-Si Columnar Structures for Solar Cell Applications

2020 ◽  
Vol 10 (1) ◽  
pp. 74-79 ◽  
Author(s):  
Aysegul Develioglu ◽  
Levent Trabzon ◽  
Yunus Alphan
Keyword(s):  
Thin Film ◽  
Contact Angle ◽  
Solar Cells ◽  
Glancing Angle Deposition ◽  
Surface Porosity ◽  
Sem Images ◽  
Vis Spectroscopy ◽  
Glancing Angle ◽  
Evaporation Technique ◽  
Angle Deposition

Background: Glancing Angle Deposition (GLAD) provides oblique deposition and substrate motion to engineer thin film microstructures in three dimensions on nano scale. Using this technique zigzag, chevrons, staircase, post, helical and various type of nanostructures including 3-D multilayers can be obtained from various metals with controllable morphologies. The aim of the study is to increase surface porosity and junction using GLAD method area for thin film solar cells and therefore to increase p-n junction area. This provides efficient charge separation and strong light absorption. Methods: Glancing angle deposition using e-beam evaporation technique has been employed to create 3- D silicon nano-structures on the surface. Al and Ag contact layers were deposited by thermal evaporation technique. Hole-conductor polymer PEDOT: PSS was spin coated onto n type silicon thin film. Reflectance spectra were measured using UV-VIS spectroscopy. Scanning electron microscopy was used to image surface and cross-section with and without PEDOT: PSS. Also, transmission spectra of PEDOT: PSS was measured using UV-VIS spectroscopy. Surface wettability properties and contact angles of silicon samples were measured by contact angle measurement with water. Results: Columnar structures possess less reflection compared to the flat surface depending on surface porosity. This phenomenon shows that these structures can be used as anti-reflection coatings for solar cells and optical devices to decrease reflectivity and increase light harvesting with higher efficiency. Contact angle decreases when surface roughness increases therefore we can see that columnar structures are more hydrophilic compared to dense films. Flat silicon has 98° contact angle while columnar structures have 71° and 61°. PEDOT: PSS exhibits high transparency in the range from 200 to 1100 nm of wavelength of light, which resembles to solar radiation inside the atmosphere. Also, SEM images of the samples show that silicon columnar structures form better contact with PEDOT: PSS than flat surface. Conclusion: GLAD technique has been used to achieve homogenous rough surface by e-beam evaporation. Both cross-sectional and top-view SEM images show that columnar structures have higher porosity than flat surfaces. The response of UV-VIS spectroscopy shows that columnar structures have less reflection due to highly porous surface. With increasing incident flux angle, antireflection property of the surfaces was enhanced by surpassing the surface reflection. Due to the reduced hydrophobicity of porous structures, organic polymer can be distributed homogenously in between the columnar structures with increased p-n junction interface area. PEDOT: PSS is highly conductive, and it is highly transparent material in the range of the wavelength typically seen in the solar radiation. This makes it easier for light to reach to Si interface to generate electrons and holes. These results provide better understanding of Si- based heterojunction solar cells efficiency improvement with surface modification. This study also shows dependency of optical and electrical activity to surface geometry and surface porosity.

scholarly journals Dominant factor on fracture strength of thin film comprising of copper helical nano-elements grown by glancing angle deposition

2015 ◽  
Vol 81 (831) ◽  
pp. 15-00446-15-00446 ◽  
Author(s):  
Takashi SUMIGAWA ◽  
Emi KAWAI ◽  
Tomoya MARUMO ◽  
Hisashi TANIE ◽  
Takayuki KITAMURA
Keyword(s):  
Thin Film ◽  
Fracture Strength ◽  
Glancing Angle Deposition ◽  
Dominant Factor ◽  
Glancing Angle ◽  
Angle Deposition

scholarly journals Au Nanospirals Transferred onto PDMS Film Exhibiting Circular Dichroism at Visible Wavelengths

Micromachines ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 641
Author(s):  
Gaku Furusawa ◽  
Tetsuo Kan
Keyword(s):  
Thin Film ◽  
Circular Dichroism ◽  
Glancing Angle Deposition ◽  
Pdms Film ◽  
Glancing Angle ◽  
Dichroic Filter ◽  
Visible Wavelengths ◽  
Circular Dichroïsm ◽  
Circular Dichroic ◽  
Angle Deposition

We propose a thin, single-layered circular dichroic filter with Au nanospiral structures on a polydimethylsiloxane (PDMS) thin film that has strong circular dichroism at visible wavelengths. Au nanospiral structures with a diameter of 70 nm were fabricated by cryogenic glancing angle deposition on a substrate with a nanodot array template patterned with the block copolymer PS-PDMS. The Au nanospiral structures were transferred onto a transparent and flexible PDMS thin film to fabricate a thin, single-layered circular dichroic filter. The filter had a very large circular dichroism peak of −830 mdeg at 630 nm. The results show that the Au nanospiral structures transferred onto PDMS thin film exhibit large circular dichroism at visible wavelengths.

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