Horiba, Ltd.

Fondazione Bruno Kessler

Francesco Ficorella

Daisuke Matsunaga

Antonino Picciotto

Nicola Zorzi

Kengo Yasui

Gabriele Giacomini

Giacomo Borghi

Provided are a radiation detector and a radiation detection apparatus in which the efficiency of detecting radiation is enhanced by increasing a portion capable of detecting radiation. A radiation detector includes a semiconductor part having a plate-like shape, the semiconductor part being provided with a through hole penetrating the semiconductor part, one surface of the semiconductor part being an incident surface for radiation. The semiconductor part has a sensitive portion capable of detecting incident radiation, the sensitive portion including an inner edge of the incident surface.

Radiation detector and radiation detection apparatus

A radiation detection element comprises: a semiconductor part generating an electric charge by entrance of radiation; a signal output electrode provided at the semiconductor part and outputting a signal caused by the electric charge; a potential gradient generation electrode provided at the semiconductor part, for applying voltage such that a potential gradient in which a potential varies toward the signal output electrode is generated inside the semiconductor part; a collection electrode provided at the semiconductor part, for collecting electric charges not derived from radiation; an insulating film provided on a side of the semiconductor part where the signal output electrode is located; and a conductive layer provided between the insulating film and a part of the semiconductor part, and having electric resistance lower than the electric resistance of the semiconductor part and higher than the electric resistance of the collection electrode. The conductive layer is located at a position where a distance from the signal output electrode is equal to or longer than a distance between the collection electrode and the signal output electrode.

Radiation detection element, radiation detector and radiation detection apparatus

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Trento, Italy

Francesco Ficorella