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A generalized approach to surface photovoltage
Journal of Applied Physics, 1996A detailed majority and minority carrier current balance model for surface photovoltage (SPV) is presented. A rigorous treatment of carrier junction generation and surface recombination is shown to be essential. We show that under weak above band gap photoexcitation, standard constant open-circuit voltage and constant photon flux SPV measurements can ...
Q. Liu +3 more
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Phonons in surface photovoltage of GaAs
Physics Letters A, 1974Abstract Oscillatory surface photovoltage is reported in GaAs at 4.2°K, characterized by two series of minima. Dominating series is attributed to the capture of photoexcited electrons by surface states with emission of phonons. Second, weak series coincides with oscillations in photoconductivity.
A. Morawski, J. Łagowski
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Limitations of surface photovoltage measurements
Journal of Applied Physics, 1984Surface photovoltage measurement used to measure the diffusion length of minority carriers in solar cells does not yield the correct value even when the cell thickness is much greater than the diffusion length. Under the best conditions the measured diffusion length is at least 10% lower than the actual value.
Amal K. Ghosh +2 more
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A study of the surface photovoltage of silicon
Solid-State Electronics, 1975Abstract The surface photovoltage of silicon has been investigated for a variety of stable silicon surfaces with a view to determining to what extent it can be used to characterize the potential of the surface. It has been found that surface trapping of photogenerated carriers results in a photovoltage signal which cannot be interpreted by the ...
Joan R. Ewing, Lloyd P. Hunter
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Near-field surface photovoltage
Applied Physics Letters, 2000A phenomenon called near-field surface photovoltage is presented. It is based on inducing photovoltage only at a semiconductor space-charge region using near-field illumination. The photovoltage is obtained by measuring the contact potential difference between an optical near-field force sensor and a semiconductor surface under illumination.
R. Shikler, Y. Rosenwaks
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Microscopic surface photovoltage spectroscopy
Applied Physics Letters, 2002We present a microscopic surface photovoltage spectroscopy method. It is based on a tunable illumination system combined with a kelvin probe force microscope, which measures the contact potential difference between a sample surface and a tip of an atomic force microscope.
S. Saraf +3 more
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Surface photovoltage spectroscopy of Cd0.85Mn0.15Te
physica status solidi (a), 1986Surface photovoltage spectroscopy measurements are performed for Cd0.85.Mn0.15. Te single crystals with surface orientation (110) in the temperature range between 85 and 300 K at a pressure of 10−5 Pa. The linear dependence on temperature of the energy gap and the energy of the levels connected with manganese are stated and the temperature coefficients
S. Kuźmiński, A. T. Szaynok
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Oscillatory relaxation of surface photovoltage on a silicon surface
Physical Review B, 2013Time-resolved measurement of photoemission spectroscopy was made to trace a change of surface potential after the surface photovoltage effect on a Si(111) $7\ifmmode\times\else\texttimes\fi{}7$ surface. Two relaxation processes were found with decay times of nanoseconds and hundreds of nanoseconds, which are explained in terms of the tunneling and the ...
M. Ogawa +7 more
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Application of Surface Photovoltage Spectroscopy in Surface Analysis
MRS Proceedings, 1992ABSTRACTExtension of the Kelvin probe vibrating capacitor technique of measuring work function, via Illumination of the semiconductor surface, i.e., Surface Photovoltage Spectroscopy (SPS), has many potential applications in the field of surface analysis.The combination of broad-band (white) and monochromatic radiation, together with measurement of the
Iain D. Baikie +2 more
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Surface Photovoltage-Based Biosensor
2000The surface photovoltage (SPV) technique was first applied to a chemical sensor by Hafeman et al. in 1988.1 We applied the technique to immunosensors in 19902 and also investigated possible applications to various kinds of chemical sensors, including ion sensors,3 gas sensors,4 biosensors,5 and image sensors.6 These studies demonstrated various ...
Yuji Murakami +3 more
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