Semiconductor detector for radiation detection, and associated operating method

US7838837B2 · kind B2 · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Lothar Strueder · Munich, DE
• Peter Holl · Tübingen, DE
• Gerhard Lutz · Munich, DE

Key dates

• Filing date: Jun 27, 2008
• Grant date: Nov 23, 2010
• Expiry date: Aug 17, 2028

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F39/807

Abstract

The invention relates to a semiconductor detector, in particular a pnCCD detector, for radiation detection, including a guard ring (12, 14) and a readout anode (3, 4) arranged inside the guard ring (12, 14) for reading out radiation-generated signal charge carriers (e−), and also including a clearing contact (9) arranged outside the guard ring (12, 14) for removing the collected signal charge carriers (e−) from the readout anode (3, 4). According to the invention, the semiconductor detector furthermore includes a gap (15, 16) in the guard ring (12, 14) and also a controllable gate (17, 18) which is arranged over the gap (15, 16) in the guard ring (12, 14) and makes the gap (15, 16) in the guard ring (12, 14) permeable or impermeable to the signal charge carriers (e−) to be removed, depending on an electrical actuation of the gate (17, 18).