Visible-blind UV detectors

US6362483B1 · kind B1 · utility

Assignee

• The Hong Kong University of Science and Technology

Inventors

• Iam Keong Sou · Kowloon, CN
• Zhaohui Ma · Kowloon, CN
• Choi Lai Man · Tsuen Wan, CN
• Zhi Yu Yang · Kowloon, CN
• Kam Sang Wong · Kowloon, CN
• George Wong · Kowloon, CN

Key dates

• Filing date: Dec 29, 1998
• Grant date: Mar 26, 2002
• Expiry date: Dec 29, 2018

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F30/222

Abstract

Visible-blind UV detectors are disclosed comprising an active layer of ZnSTe alloy. The Te composition can be varied to provide good lattice matching depending on the nature of the substrate (eg Si, GaP or GaAs) and a novel structure is provided to give high quantum efficiency. The invention also discloses UV detectors with an active layer of pure ZnS and with an active layer of ZnSSe.