Tailoring Material Properties through Defect Engineering

2010 ◽  
Vol 39 (12) ◽  
pp. 1226-1231 ◽  
Author(s):  
Harry L. Tuller ◽  
Sean R. Bishop
Keyword(s):  
Material Properties ◽  
Defect Engineering

scholarly journals Prospects for defect engineering in Cu2ZnSnS4 solar absorber films

2020 ◽  
Vol 8 (31) ◽  
pp. 15864-15874
Author(s):  
Katharina Rudisch ◽  
Alexandra Davydova ◽  
Lars Riekehr ◽  
Joakim Adolfsson ◽  
Luciano Quaglia Casal ◽  
...  
Keyword(s):  
Thin Films ◽  
Material Properties ◽  
Process Conditions ◽  
Defect Engineering ◽  
Solar Absorber ◽  
New Approaches

Composition spread Cu2ZnSnS4 thin films unveil the complicated interplay between process conditions and material properties, pointing to new approaches towards defect engineering.

Towards the Tailoring of P Diffusion Gettering to As-Grown Silicon Material Properties

2011 ◽  
Vol 178-179 ◽  
pp. 158-165 ◽  
Author(s):  
Jasmin Hofstetter ◽  
Jean François Lelièvre ◽  
David P. Fenning ◽  
Mariana I. Bertoni ◽  
Tonio Buonassisi ◽  
...  
Keyword(s):  
Solar Cell ◽  
Material Properties ◽  
Silicon Solar Cell ◽  
Cell Process ◽  
Electron Lifetime ◽  
Good Reduction ◽  
Defect Engineering ◽  
Cell Processing ◽  
Appreciable Increase ◽  
P Diffusion

The evolution of Fe-related defects is simulated for di erent P di usion gettering (PDG) processes which are applied during silicon solar cell processing. It is shown that the introduction of an extended PDG is bene cial for some as-grown Si materials but not essential for all of them. For mc-Si wafers with an as-grown Fe concentration 14 cm3, a good reduction of the Fei concentration and increase of the electron lifetime is achieved during standard PDG. For mc-Si wafers with a higher as-grown Fe concentration the introduction of defect engineering tools into the solar cell process seems to be advantageous. From comparison of standard PDG with extended PDG it is concluded that the latter leads to a stronger reduction of highly recombination active Fei atoms due to an enhanced segregation gettering e ect. For an as-grown Fe concentration between 1014 cm3 and 1015 cm3, this enhanced Fei reduction results in an appreciable increase in the electron lifetime. However, for an as-grown Fe concentration >1015 cm3, the PDG process needs to be optimized in order to reduce the total Fe concentration within the wafer as the electron lifetime after extended PDG keeps being limited by recombination at precipitated Fe.

Grain boundary segregation in metals

1992 ◽  
Vol 50 (2) ◽  
pp. 1204-1205
Author(s):  
C.L. Briant
Keyword(s):  
Fracture Surface ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Material Properties ◽  
Electron Spectroscopy ◽  
High Vacuum ◽  
Boundary Segregation ◽  
Grain Boundary Segregation ◽  
Local Concentration ◽  
The One

Grain boundary segregation is the process by which solute elements in a material diffuse to the grain boundaries, become trapped there, and increase their local concentration at the boundary over that in the bulk. As a result of this process this local concentration of the segregant at the grain boundary can be many orders of magnitude greater than the bulk concentration of the segregant. The importance of this problem lies in the fact that grain boundary segregation can affect many material properties such as fracture, corrosion, and grain growth.One of the best ways to study grain boundary segregation is with Auger electron spectroscopy. This spectroscopy is an extremely surface sensitive technique. When it is used to study grain boundary segregation the sample must first be fractured intergranularly in the high vacuum spectrometer. This fracture surface is then the one that is analyzed. The development of scanning Auger spectrometers have allowed researchers to first image the fracture surface that is created and then to perform analyses on individual grain boundaries.

Relationships Between Grain Boundary Structure and Material Properties

1980 ◽  
Vol 38 ◽  
pp. 366-369
Author(s):  
Brian Ralph ◽  
Barlow Claire ◽  
Nicola Ecob
Keyword(s):  
Grain Boundary ◽  
Material Properties ◽  
Main Property ◽  
Grain Structure ◽  
Boundary Structure ◽  
Grain Boundary Structure ◽  
Property Changes

This brief review seeks to summarize some of the main property changes which may be induced by altering the grain structure of materials. Where appropriate an interpretation is given of these changes in terms of current theories of grain boundary structure, and some examples from current studies are presented at the end of this paper.

Bone material properties as measured by Reference Point Indentation are low in subjects with acromegaly

2016 ◽  
Author(s):  
Frank Malgo ◽  
Neveen A T Hamdy ◽  
Alberto M Pereira ◽  
Nienke R Biermasz ◽  
Natasha M Appelman-Dijkstra
Keyword(s):  
Material Properties ◽  
Reference Point ◽  
Bone Material ◽  
Bone Material Properties ◽  
Reference Point Indentation

Material properties of adhesives for shear bonded connections of structural glass

2015 ◽  
Vol 10 (2) ◽  
pp. 57-68 ◽  
Author(s):  
Klára Machalická ◽  
Martina Eliášová ◽  
Michal Netušil
Keyword(s):  
Material Properties ◽  
Structural Glass
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