Patents by Inventor Jozef F. Piotrowski

Jozef F. Piotrowski has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5650635
    Abstract: The subject invention comprises a plurality of serially connected small volume photovoltaic devices. A single device includes a first layer of n.sup.+ doped InSb, a second layer of doped IDAs.sub.1-x Sb.sub.x and a third layer of p.sup.+ doped InSb. From 2-50 of these devices are grown by either a low-pressure MOCVD or MBE process to a maximum thickness of about 10 .mu.m. Alternatively, the first layer may be n.sup.+ doped In.sub.y Ga.sub.1-y, Sb the second layer p.sup.+ doped InAs.sub.1-x Sb.sub.x and the third layer In.sub.y Ga.sub.1-y Sb, repeated to a maximum thickness of 10 m.
    Type: Grant
    Filed: July 14, 1995
    Date of Patent: July 22, 1997
    Assignee: Northwestern University
    Inventors: Manijeh Razeghi, Jozef F. Piotrowski