Kent State University

United States of America As Represented by the Administrator of Nasa

Essential Research, Inc.

Martin O Patton

Joseph Dale Warner

Mark Anthony Stan

Donald L Chubb

Victor George Weizer

Samar Sinharoy

A solar cell comprising a substrate, a buffer layer, a first subcell, a second subcell, and a third subcell, where said first subcell, said second subcell, and said third subcell are lattice matched, and where said substrate is lattice mismatched with said first, second, and third subcells.

Multi-junction photovoltaic cell

A selective emitter pumped rare earth laser provides an additional type of laser for use in many laser applications. Rare earth doped lasers exist which are pumped with flashtubes or laser diodes. The invention uses a rare earth emitter to transform thermal energy input to a spectral band matching the absorption band of a rare earth in the laser in order to produce lasing.

Selective emitter pumped rare earth laser

Thin films of 2H .alpha.-silicon carbide are produced by pulsed laser ablation.

Thin film 2H .alpha.-SiC

Process of making thin film 2H .alpha.-sic by laser ablation

Growing community of inventors

Fairview Park, OH, United States of America

Martin O Patton