Optoelectronic device employing a microcavity including a two-dimensional carbon lattice structure

US8610989B2 · kind B2 · utility

Assignees

• International Business Machines Corporation · US
• KARLSRUHER INSTITUT FÜR TECHNOLOGIE · DE
• Cambridge Enterprise Limited · GB

Inventors

• Phaedon Avouris · Yorktown Heights, US
• Mathias B. Steiner · Rio de Janeiro, BR
• Michael Engel · Karlsruhe, DE
• Ralph Krupke · Blankenloch, DE
• Andrea Ferrari · Orbassano, IT
• Antonio Lombardo · Cambourne, GB

Key dates

• Filing date: Oct 31, 2011
• Grant date: Dec 17, 2013
• Expiry date: Jun 5, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K85/221

Abstract

A microcavity-controlled two-dimensional carbon lattice structure device selectively modifies to reflect or to transmit, or emits, or absorbs, electromagnetic radiation depending on the wavelength of the electromagnetic radiation. The microcavity-controlled two-dimensional carbon lattice structure device employs a graphene layer or at least one carbon nanotube located within an optical center of a microcavity defined by a pair of partial mirrors that partially reflect electromagnetic radiation. The spacing between the mirror determines the efficiency of elastic and inelastic scattering of electromagnetic radiation inside the microcavity, and hence, determines a resonance wavelength of electronic radiation that is coupled to the microcavity. The resonance wavelength is tunable by selecting the dimensional and material parameters of the microcavity. The process for manufacturing this device is compatible with standard complementary metal oxide semiconductor (CMOS) manufacturing processes.