Results 221 to 230 of about 3,551 (254)
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Surface photovoltage experiments on SrTiO3 electrodes
Journal of Vacuum Science and Technology, 1978Electronic surface states play a significant role in charge transfer between the electrolyte and the n-type SrTiO2 semiconducting electrodes used in the photoelectrolysis of water. To clarify the role of these states, we have measured the wavelength response of the photovoltage developed between the SrTiO3 surface and a vibrating Au reference electrode,
J. G. Mavroides, D. F. Kolesar
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Surface photovoltage behavior of GaN columns
physica status solidi (a), 2015GaN columns are grown by metal organic vapor phase epitaxy (MOVPE) with a high silane flow, which often leads to rough sidewalls and related problems during a subsequent shell overgrowth by e.g., InGaN/GaN quantum wells. In order to get more information on the surface of GaN columns before overgrowth, surface photovoltage (SPV) measurements have been ...
Manal Ali Deeb +4 more
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Characterization of Surface Cleans by Surface Photovoltage and Surface Charge Imaging
MRS Online Proceedings Library, 1993To monitor the effectiveness of standard cleaning processes in semiconductor manufacturing, suitable diagnostic procedures must be found. In addition the procedures must be non-contact and non-destructive. Increasingly the techniques of surface photovoltage and surface charge imaging together are finding applications as in-line wafer monitors.
John Lowell +2 more
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Evaluation of surface photovoltage on silicon surfaces
2020ABSTRACT EVALUATION OF SURFACE PHÛT0VÛLTA6E ÜNAL Emin M. S. i v'ı E I ect r i ca 1 arid E I «set ron i cs En a i nee r i n-a Supervisor: Assist. Prof. Dr. Müzeyyen SAR I TAS January, 1988.. 88 pa-aes The minority carrier diffusion lenath has been widely used to characterize the duality of silicon solar cell material before it is processed into ...
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Surface photovoltage spectroscopy of thin films
Journal of Applied Physics, 1996The surface photovoltage (SPV) spectrum due to subband-gap illumination of thin films is theoretically studied. It is shown that this SPV is inherently sensitive to buried interfaces just as it is sensitive to the external semiconductor surface. The different contributions to the SPV from all the optically active gap states present within a sample ...
M. Leibovitch +5 more
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Surface photovoltage measurement in MOS structures
Applied Physics A Solids and Surfaces, 1987A method for the dc surface photovoltage measurement in MOS capacitors is proposed. Results of surface-photovoltage measurements performed for two kinds of MOS structures on p-type silicon substrates are presented. Comparison of them with results obtained form C-V characteristics exhibits a satisfactory conformity.
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Surface photovoltage investigations of
Surface Science Letters, 1990S. Kuźminski, K. Pater, A.T. Szaynok
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Surface photovoltage measurements on cadmium sulfide
Journal of Physics and Chemistry of Solids, 1962Abstract Surface photovoltage measurements on conducting crystals of cadmium sulfide show that, at equilibrium, there is a difference in potential between the surface and the bulk of 0.2 to 0.3 eV. This is due to adsorbed oxygen which forms charged acceptor states on the surface. The adsorption is a reversible process and the oxygen may be removed by
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Surface Photovoltage Spectroscopy of Semiconductor Nanostructures
2010Surface Photovoltage Spectroscopy (SPS) [1] is a valuable method for the non-contact and non-destructive investigation of several semiconductor bulk properties, such as optical band-gap, defect-related optical transitions, minority carrier diffusion length and lifetime, Van Hove singularities or phase inhomogeneities. Moreover, SPS allows for obtaining
CAVALCOLI, DANIELA, CAVALLINI, ANNA
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