| 摘要 |
<p>A solid state radiation detector (10) has semiconductor layers (14) and metal layers (16, 18) which are stacked along the incident direction of radiation rays. Each metal layer (16, 18) is made of a specific metal material which receives radiation rays entering itself and produces free photoelectrons by interactions therewith. The photoelectrons are introduced into the semiconductor layer (14), and excite it, thereby producing electron-hole pairs therein. The metal layers (16, 18) serve not only as radiation detecting layers but also as electrodes for collecting the electron-hole pairs. Therefore, when the produced electron-hole pairs are derived from the metal layers (16, 18), an electrical radiation detecting signal may be produced.</p> |
