scholarly journals Ultrasonic Processing of Si and SiGe for Photovoltaic Applications

2021 ◽  
Author(s):  
Andriy Nadtochiy ◽  
Artem Podolian ◽  
Oleg Korotchenkov ◽  
Viktor Schlosser
Keyword(s):  
Surface Chemistry ◽  
Thin Layers ◽  
Ultrasonic Processing ◽  
Surface Processing ◽  
Power Ultrasound ◽  
Ultrasonic Cleaning ◽  
Hydrogen Molecules ◽  
Hydrocarbon Chains ◽  
Photovoltaic Applications ◽  
Silicon Based

The usage of power ultrasound for sonochemical processing of Si wafers and thin layers of amorphous Si and SiGe alloys is described. Over the last decade different industries have become increasingly drawn to sonochemistry because it provides a green and clean alternative to conventional technologies, particular in the areas of processing of silicon-based materials for photovoltaic applications. Two techniques related to ultrasonic cleaning of Si wafers and sonochemical modification of Si, SiGe and a-Si/SiGe surfaces in hydrocarbon solutions of chloroform (CHCl3) and dichloromethane (CH2Cl2) are discussed. The occurrence of cavitation and bubble implosion is an indispensable prerequisite for ultrasonic cleaning and surface processing as it is known today. The use of higher ultrasonic frequencies to expand the range of ultrasonic cleaning and processing capabilities is emphasized. Although exact mechanisms of an improved photoelectric behavior of Si-based structures subjected to power ultrasound are not yet clarified in many cases, the likely scenarios behind the observed photovoltaic performances of Si, SiGe and a-Si/SiGe surfaces are proposed to involve the surface chemistry of oxygen and hydrogen molecules as well hydrocarbon chains.

Sliding Silicon-based Schottky diodes: Maximizing Triboelectricity with Surface Chemistry

Nano Energy ◽  
2021 ◽  
pp. 106861
Author(s):  
Stuart Ferrie ◽  
Anton P. Le Brun ◽  
Gowri Krishnan ◽  
Gunther Anderson ◽  
Nadim Darwish ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Schottky Diodes ◽  
Silicon Based

Amorphous Silicon based Solar Cell Technologies: Status, Challenges, and Opportunities

2004 ◽  
Vol 808 ◽  
Author(s):  
Rajeewa R. Arya
Keyword(s):  
Solar Cell ◽  
Amorphous Silicon ◽  
Commercial Application ◽  
Amorphous Silicon Solar Cell ◽  
Building Integrated Photovoltaic ◽  
Photovoltaic Applications ◽  
Challenges And Opportunities ◽  
Module Development ◽  
Silicon Based ◽  
Conversion Efficiencies

ABSTRACTAdvances in amorphous silicon solar cell and module development over the past two decades has led to widespread commercial application in consumer and building integrated photovoltaic applications (BIPV). The technology has taken two pathways: (i) superstrate and (ii) substrate. Both pathways have unique advantages over crystalline modules and have demonstrated promising stability and reliability with continuous improvement in performance. Multi-junction modules with amorphous and microcrystalline silicon have demonstrated initial conversion efficiencies in the range of 13%-13.5%.

XPS Studies of the Interactions of Biocells with Various Silicon Based Surfaces

1995 ◽  
Vol 414 ◽  
Author(s):  
S. Seal ◽  
S. Krezoski ◽  
T. L. Barr ◽  
D. H. Petering
Keyword(s):  
Surface Chemistry ◽  
Tumor Cells ◽  
Photoelectron Spectroscopy ◽  
Freeze Drying ◽  
Chemical Characterization ◽  
Chrysotile Asbestos ◽  
X Ray ◽  
Silicon Based ◽  
Rat Tumor

AbstractSiliceous materials are the principal components of Earth's crust and also have become key ingredients of modem technology. Recently, we have expanded our chemical characterization of complex silicates (e.g., framework [1] and sheet types [2]) to include studies of their interaction with select biocells [3,4]. It is becoming apparent that the surface chemistry of these silicates, and perhaps that of silica itself, plays a key role in the oft resulting cell pathogenesis, thus enhancing the value of further investigations with X-ray photoelectron spectroscopy. The present research describes the unique growth of Ehrlich (murine or rat tumor) cells on Sio and SiO2 wafers, and also on select seaentine silicates (such as chrysotile asbestos). Tbese growth studies were followed by both cell/silicate separations and unique freeze drying [3,4]. XPS examination at select stages discovered cell induced alterations in the Si, O, Mg and particularly Fe chemistry of the silicon based systems as well as corresponding changes in the cell chemistry. Many of these features were confirmed by atomic absorption spectroscopy.

Influence of sputtering power on the properties of thin layers of GZO for photovoltaic applications

2015 ◽  
Vol 26 (5) ◽  
pp. 3336-3343 ◽  
Author(s):  
H. Mahdhi ◽  
Z. Ben Ayadi ◽  
J. L. Gauffier ◽  
K. Djessas ◽  
S. Alaya
Keyword(s):  
Thin Layers ◽  
Sputtering Power ◽  
Photovoltaic Applications

ZnO:Al with tuned properties for photovoltaic applications: thin layers and high mobility material

2013 ◽  
Author(s):  
Florian Ruske ◽  
Robert Rößler ◽  
Mark Wimmer ◽  
Steffi Schönau ◽  
Stefan Kämpfer ◽  
...  
Keyword(s):  
High Mobility ◽  
Thin Layers ◽  
Photovoltaic Applications

scholarly journals Zinc oxide as a defect-dominated material in thin films for photovoltaic applications – experimental determination of defect levels, quantification of composition, and construction of band diagram

2015 ◽  
Vol 17 (15) ◽  
pp. 10004-10013 ◽  
Author(s):  
Maciej Krzywiecki ◽  
Lucyna Grządziel ◽  
Adnan Sarfraz ◽  
Danish Iqbal ◽  
Anna Szwajca ◽  
...  
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Electronic Structure ◽  
Experimental Determination ◽  
Sol Gel ◽  
Thin Layers ◽  
Band Diagram ◽  
Photovoltaic Applications ◽  
Defect Levels

In the present work we determine the electronic structure and quantify composition of sol–gel synthesized oxygen-deficient ZnO thin layers.

Aerosol technology and Si nano-composite electrode assembly for Li-ion batteries

2011 ◽  
Vol 1313 ◽  
Author(s):  
David Munao ◽  
Mario Valvo ◽  
Jan van Erven ◽  
Esteban Garcia-Tamayo ◽  
Erik Kelder
Keyword(s):  
Particle Size ◽  
Hybrid Electric Vehicle ◽  
Chemical Vapor ◽  
Good Control ◽  
High Energy ◽  
Thin Layers ◽  
Nano Particles ◽  
High Energy Density ◽  
Clear Understanding ◽  
Silicon Based

ABSTRACTIn this work novel approaches to fabricate silicon-based electrodes are shown. Starting from silicon nano-particles it is possible to create nano-structured porous thin films. Both the synthesis of the Si nano-particles and the electrode assembly are performed via aerosol routes. This guarantees a very good control on the particle size and the particle size distribution, on the purity of the product and on the morphology and texture of the deposited layers. Particles are produced via Laser assisted Chemical Vapor Pyrolysis whereas electrode thin layers are deposited via Electro Spray method. The range of particle sizes can be tailored according to the selected application. Here, particles of a mean size of about 10 nm have been synthesized. Since Si is well known to forms highly lithiated intermetallic compounds [1], it is regarded as one of the most promising material for energy storage [2], especially looking at high energy density applications, such as hybrid/electric vehicle traction. In this work its promising performance are presented. The role of the additives in the composite formulation is also taken into account for a more clear understanding of the capacity fading mechanism of such electrodes.

scholarly journals How Can The Nanomaterial Surfaces Be Highly Cleaned?

2018 ◽  
pp. 184-186 ◽  
Author(s):  
Viet Phuong Pham
Keyword(s):  
Surface Chemistry ◽  
Methyl Methacrylate ◽  
Chemical Vapor ◽  
Thin Layers ◽  
Intrinsic Properties ◽  
Graphene Surface ◽  
Poly Methyl Methacrylate ◽  
Electrical Degradation ◽  
Chemical Vapor Deposited

The induced contaminations (e.g polymer residues or impurities in air) on nanomaterial surfaces have been a serious problem to probe their intrinsic properties and for unique applications in surface chemistry, electronic, and optoelectronic. The polymer residues still presented on chemical vapor deposited graphene surface after its wet transfer (e.g. poly(methyl methacrylate) (PMMA)) on the arbitrary substrates tends to cause problems such as electrical degradation and unwanted intentional doping. Polymer residues (e.g PMMA), defects, and other contaminations are commonly leaving the thin layers or the particles as residues on nanomaterials.

Sign in / Sign up

Export Citation Format

Share Document