Photosensitive imaging devices and associated methods

US8680591B2 · kind B2 · utility

Assignee

• SIONYX, LLC · US

Inventors

• Homayoon Haddad · Beaverton, US
• Jutao Jiang · Tigard, US
• Jeffrey McKee · Meridian, US
• Drake Miller · Tigard, US
• Leonard Forbes · Corvallis, US
• Chintamani Palsule · Lake Oswego, US

Key dates

• Filing date: Sep 17, 2010
• Grant date: Mar 25, 2014
• Expiry date: Jul 25, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F39/8067

Abstract

Photosensitive devices and associated methods are provided. In one aspect, for example, a photosensitive imager device can include a semiconductor substrate having multiple doped regions forming at least one junction, a textured region coupled to the semiconductor substrate and positioned to interact with electromagnetic radiation, and an electrical transfer element coupled to the semiconductor substrate and operable to transfer an electrical signal from the at least one junction. In one aspect, the textured region is operable to facilitate generation of an electrical signal from the detection of infrared electromagnetic radiation. In another aspect, interacting with electromagnetic radiation further includes increasing the semiconductor substrate's effective absorption wavelength as compared to a semiconductor substrate lacking a textured region.