论文部分内容阅读
天然矿物中,有不少具有半导体性质。对矿物半导体性质的研究,很早就为人们所重视。长期以来,电导率一直就是某些矿物的一个重要物理常数。对矿物作进一步的半导体性质的研究,不仅可以丰富矿物学的内容,而且还可能从中发现一些新的、有意义的半导体结构类型。 半导体的电阻率介于导体与绝缘体之间,在室温下为10~(-3)—10~9欧姆·厘米。按照能带理论,半导体的能带结构与绝缘体相以,只是其禁带宽度较绝缘体者为小。这种在室温时由于温度的升高,满带(价带)的电子可以获得能量,激发到空带(导带)上去而造
Among the natural minerals, many have semiconducting properties. The study of the nature of mineral semiconductors has long been valued by people. Conductivity has long been an important physical constant for some minerals. Further research into the mineral properties of minerals not only enriches the mineralogy but also reveals some new and interesting types of semiconductor structures. The resistivity of the semiconductor is between the conductor and the insulator, and is 10 -3 to 10 9 ohm · cm at room temperature. According to the band theory, the semiconductor’s band structure and insulator phase, but its band gap than the insulator is small. This at room temperature due to the temperature rise, the full band (valence band) of the electronic energy can be obtained, excited to the empty zone (conduction band) up