The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 30, 2012
Filed:
Dec. 07, 2009
Matthias Fertig, Böblingen, DE;
Thomas Pflueger, Böblingen, DE;
Thomas Morf, Rueschlikon, CH;
Nikolaj Moll, Rueschlikon, CH;
Matthias Fertig, Böblingen, DE;
Thomas Pflueger, Böblingen, DE;
Thomas Morf, Rueschlikon, CH;
Nikolaj Moll, Rueschlikon, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A multi-junction opto-electronic device including a stack of wavelength selective absorption layers is proposed. The absorption layers include each a first layer with a grating of a specific pitch defining the wavelength of the incident light to be absorbed within a subjacent second electrically active layer itself on a third electrically inactive layer. The second electrically active layer within the different absorption layers is in electrical connection with lateral contacts to extract the electrical charge carriers generated by the absorbed incident light within the active layer. The grating within the first layer of the absorption layers is defined by periodic stripes of specific width depending on the wavelength to be absorbed by the respective absorption layers. The period of the stripes alignment is defined by the pitch of the grating. Advantageously, ordinary silicon technology can be used.