Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Patent
1983-03-24
1985-09-24
Moore, David K.
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
315150, 313505, 313507, 313358, 357 90, 357 61, 429111, H05B 3314, H01L 3300
Patent
active
045435111
ABSTRACT:
A photoelectrochemical cell (10) is disclosed which has a semiconductor substrate (11) formed of a solid solution of three metal and non-metal elements, with two like elements varying in concentration with depth from an exposed surface (13) of the substrate (11). The band gap energies between the valence and conduction bands varies with the concentration of the two elements from the surface, with the band gap energies being in a proper range to provide emitted light in response to light or electrical stimulation. An electrolyte (14) is maintained in contact with the exposed surface and a counterelectrode (15) is immersed in the electrolyte such that a voltage applied between a counterelectrode (15) and the substrate (11) will vary the color of light emitted from the exposed surface (13) in response to incident light or by stimulation from the electrical current passing through the substrate. Preferred materials for the substrate are cadmium and selenium, with sulfur being diffused into the exposed surface and substituted in the lattice for selenium.
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Streckert, H. H.; Tong, J.; Ellis, A. B., Luminescent Photoelectrochemical Cells, J. Am. Chem. Soc., vol. 104, No. 2, Jan. 1982, pp. 581-588.
Ellis Arthur B.
Streckert Holger H.
DeLuca Vincent
Moore David K.
Wisconsin Alumni Research Foundation
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