Radiation detector

US8212285B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors GmbH · DE

Inventors

• Arndt Jaeger · Regensburg, DE
• Peter Stauß · Nittendorf, DE
• Reiner Windisch · Nittendorf, DE

Key dates

• Filing date: Mar 10, 2005
• Grant date: Jul 3, 2012
• Expiry date: Apr 15, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/547
• WIPO field: Micro-structural and nano-technology
• WIPO sector: Chemistry

Abstract

The invention specifies a radiation detector for detecting radiation (8) according to a predefined spectral sensitivity distribution (9) that exhibits a maximum at a predefined wavelength λ0, comprising a semiconductor body (1) with an active region (5) serving to generate a detector signal and intended to receive radiation, in which according to one embodiment the active region (5) includes a plurality of functional layers (4a, 4b, 4c, 4d) that have different band gaps and/or thicknesses and are implemented such that they (4a, 4b, 4c, 4d) at least partially absorb radiation in a range of wavelengths greater than λ0. According to a further embodiment, disposed after the active region is a filter layer structure (70) comprising at least one filter layer (7, 7a, 7b, 7c), said filter layer structure determining the short-wave side (101) of the detector sensitivity (10) according to the predefined spectral sensitivity distribution (9) by absorbing wavelengths smaller than λ0. A radiation detector for detecting radiation (8) according to the spectral sensitivity distribution (9) of the human eye is also specified. The semiconductor body can be monolithically integrated.