Solar Junction Corporation

Daniel Derkacs

Ting Liu

Homan Bernard Yuen

Ferran Suarez

Rebecca Elizabeth Jones-Albertus

Pranob Misra

Michael West Wiemer

Michael J Sheldon

Vijit A Sabnis

Paul F Lamarche

Onur Fidaner

Micahel West Wiemer

The present disclosure provides multi-junction solar cell structures and fabrication methods thereof that improve electrical testing capability and reduce chip failure rates. In the present invention a special masking pattern is used in the layout such that all or some of the epitaxial layers are etched away in the corner areas of each solar cell. Consequently, the semiconductor substrate or one or more of the interconnections between junctions become accessible from the top (the side facing the sun) to make electrical connections.

Methods and apparatus for identifying and reducing semiconductor failures

Multijunction solar cells having at least four subcells are disclosed, in which at least one of the subcells comprises a base layer formed of an alloy of one or more elements from group III on the periodic table, nitrogen, arsenic, and at least one element selected from the group consisting of Sb and Bi, and each of the subcells is substantially lattice matched. Methods of manufacturing solar cells and photovoltaic systems comprising at least one of the multijunction solar cells are also disclosed.

High efficiency multijunction solar cells

Growing community of inventors

Sunnyvale, CA, United States of America

Daniel Derkacs