Results 121 to 130 of about 1,787,488 (253)
Minority carrier lifetime mapping of solar cells [PDF]
, 2011 The minority carrier lifetime distribution across silicon solar cells was investigated using variations of the open circuit voltage decay method. This was performed on monocrystalline, polycrystalline and amorphous silicon solar cells. Light from a white
Fisher, Rebbeca
core
Development of instrumentation and methods for positron spectroscopy of defects in semiconductors [PDF]
, 2001 Instrumentation and methods for positron annihilation spectroscopy of point defects in semiconductors have been developed. In particular, techniques to enhance the stability of positron lifetime spectrometers have been investigated.
Nissilä, Jaani
core +1 more source
Pals3D - A data acquisition software for positron annihilation lifetime spectroscopy
, 2019 <p><strong>Pals3D</strong> is a graphical application for data acquisition for positron annihilation lifetime spectroscopy experiments.
Aurélie Vancraeyenest (8225763) +1 more
core +1 more source
Surface areas by positron annihilation spectroscopy [PDF]
, 1985 Positron annihilation spectroscopy (PAS) is a technique for measuring the length of time that a positron exists after being injected into a specific material. Lifetime measurements have been used for studying defects in metals. These imperfections affect
Dale, J.M. +5 more
core
Photo-degradation of Lexan polycarbonate studied using positron lifetime spectroscopy
, 2013 The free volume properties of pristine and UV irradiated Lexan polycarbonate have been investigated using Positron Lifetime Spectroscopy (PLS). The decrease in o-Ps life time and free volume size of irradiated sample is attributed to free volume ...
Ganesh Sanjeev +9 more
core +1 more source
Supercooling studies in n-p-cyano-p-heptyl biphenyl using positron, lifetime spectroscopy
, 1993 Supercooling studies have been performed in n-p-cyano-p-heptyl biphenyl using positron lifetime spectroscopy. Positron lifetime measurements have been performed during the heating cycle of samples prepared by either quenching or slow cooling from the ...
K. CHANDRAMANI SINGH, P.C. JAIN
core +1 more source
Electric field of a buried interfacial region measured by positron-lifetime spectroscopy
, 2002 Positrons from a radioactive source are implanted into a reverse-biased metal-semiconductor contact and are drifted back towards the contact by the internal electric field where they trap into voids and annihilate.
Ling, CC, Shek, YF, Beling, CD, Fung, S
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Science and Technology of Advanced Materials, 2004 Many anomalous phenomena have been observed in NiTi alloys above martensite start temperature, such as softening of the shear constants, increase of internal friction and diffuse scattering of TEM.
J. Katsuyama, H. Araki, M. Mizuno and Y. Shirai
doaj
Positron Lifetime Spectroscopy for Investigation of Thin Polymer Coatings
, 2007 In the aerospace industry, applications for polymer coatings are increasing. They are now used for thermal control on aerospace structures and for protective insulating layers on optical and microelectronic components.
Danny R. Sprinkle +3 more
core
Pore size determination by positron annihilation lifetime spectroscopy
Optica Applicata, 2003 Two Vycor glasses were investigated using PALS method. The model of pick-off annihilation in cylindrical free volume was applied to evaluate the pore radii. The o-Ps mean lifetime value in the pores changed from 6.5 to 40 ns in one glass, while from 13 to 51 ns in the other (softer) one.
Jasińska, Bożena +3 more
openaire +1 more source