摘要:
Disclosed is a method of manufacturing a semiconductor device wherein a corpuscular beam is radiated to a semiconductor substrate to create crystal defects therein, characterized in that said semiconductor substrate is subjected to a heat treatment, e.g. for 1 second to 60 minutes, wherein rapid heating-up, e.g. raising temperature to 550 to 850 °C within 10 minutes, is done in a process prior to that of carrying out of the radiation with a corpuscular beam. By doing so, there is provided a semiconductor device which is free from degradation in electrical characteristics such as current amplification factor and has an increased switching speed, even where crystal defects are created through the radiation of corpuscular beam such as an electron beam to shorten the carrier lifetime. Thus, the inventive semiconductor device is satisfied by both requirements of switching speed and electrical characteristic.
摘要:
A method for manufacturing a semiconductor device in which crystal defects are generated in a semiconductor crystal by irradiating a semiconductor substrate (1) with a particle beam. In the preceding process of the irradiation process, the substrate (1) is heat-treated such that the temperature of the substrate (1) is raised rapidly in ten minutes to 550-850 °C and maintained for one second to 60 minutes. Crystal defects are generated in the crystal by irradiating the crystal with such a particle beam as an electron beam, the life time of carriers is shortened, and accordingly the switching speed is increased, not lowering the electric characteristics such as the current amplification factor. Thus a semiconductor device having both a high switching speed and good electric characteristics is fabricated.
摘要:
A method for manufacturing a semiconductor device in which crystal defects are generated in a semiconductor crystal by irradiating a semiconductor substrate (1) with a particle beam. In the preceding process of the irradiation process, the substrate (1) is heat-treated such that the temperature of the substrate (1) is raised rapidly in ten minutes to 550-850 °C and maintained for one second to 60 minutes. Crystal defects are generated in the crystal by irradiating the crystal with such a particle beam as an electron beam, the life time of carriers is shortened, and accordingly the switching speed is increased, not lowering the electric characteristics such as the current amplification factor. Thus a semiconductor device having both a high switching speed and good electric characteristics is fabricated.
摘要:
Procédé de réalisation d'un circuit intégré pour la détection du rayonnement infrarouge comprenant un substrat semi-isolant muni d'une photodiode PIN enterrée, d'un transistor à effet de champ à jonction J-FET dont la grille est connectée à la photodiode PIN, et une résistance R connectée au transistor, ce procédé incluant la croissance d'une première structure de couches épitaxiales de matériaux semiconducteurs dans laquelle est formé le transistor J-FET, la croissance d'une seconde structure de couches épitaxiales de matériaux semiconducteurs dans laquelle est formée la diode PIN, et la gravure d'un puits dans lequel la seconde structure de couches est réalisée, caractérisé en ce que la gravure du puits est réalisée après la croissance de la première structure de couches épitaxiales et est pratiquée à travers cette structure jusque dans le substrat, en ce que la croissance de la seconde structure de couches épitaxiales est localisée de manière telle que cette seconde structure est limitée au puits et que sa surface supérieure est coplanaire avec celle de la première structure de couches. Application : détecteur infrarouge intégré fonctionnant dans les domaines de longueur d'onde 1,3 ou 1,55 µm pour être utilisé en télécommunications.