Surface Photovoltage Spectroscopy of Cd0.97Fe0.03Se and Cd0.97Fe0.03Te Crystals
نویسندگان
چکیده
منابع مشابه
Characterization of quantum well structures using surface photovoltage spectroscopy
In this work a novel method to characterize quantum well (QW) structures and devices is presented. The method is based on the well-known surface photovoltage spectroscopy (SPS) and on numerical simulations. It is shown that the surface photovoltage is sensitive to the electron hole energy transition levels in the well layer as well as to features of other regions of the structure. The photovolt...
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The possibility of obtaining a detailed picture of the electronic structure makes surface photovoltage spectroscopy (SPS) eminently suitable for bridging the gap between the chemical, physical, optical and electrical properties of semiconductors. In SPS, changes in band bending (both at the free semiconductor surface and at buried interfaces) are monitored as a function of external illumination...
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Binding energies measured by x-ray photoelectron spectroscopy (XPS) are influenced by doping, since electrons are transferred to (p-type) and from (n-type) samples when they are introduced into the spectrometer, or brought into contact with each other (p-n junction). We show that the barely measurable Si2p binding energy difference between moderately doped n- and p-Si samples can be enhanced by...
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Photochemical charge generation, separation, and transport at nanocrystal interfaces are central to photoelectrochemical water splitting, a pathway to hydrogen from solar energy. Here, we use surface photovoltage spectroscopy to probe these processes in nanocrystal films of HCa2Nb3O10, a proven photocatalyst. Charge injection from the nanoparticles into the gold support can be observed, as well...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 1991
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.79.183