Lesson 01 Semiconductor Materials 电子技术专业英语教程[冯新宇主编][电子教案].pptVIP

《电子技术专业英语教程》 * * Unit 1 Introduction Lesson 1 Semiconductor Materials 《电子技术专业英语教程》冯新宇 主编 电子工业出版社 * * Lesson 1 Semiconductor Materials Backgrounds Text tour Language in use Vocabulary Structure Reading/writing techniques * * Terminology Conductor, Semiconductor insulator IC, ULSI IMPATT , LED Backgrounds * * Terminology * * In general, all materials may be classified in three major categories — conductors, semiconductors, and insulators-depending upon their ability to conduct an electric current. 通常，根据材料导电性能的不同，可分为三种类型—导体，半导体和绝缘体。 Conductor, Semiconductor insulator * * The materials most often used in semiconductor devices are germanium and silicon. Silicon (Si) and germanium (Ge) widely used elemental semiconductors. 通常用于半导体器件的半导体材料是锗和硅，它们是应用最广的半导体材料。 Conductor, Semiconductor insulator * * The integrated circuit is a group of transistors manufactured from a single piece of material and connected together internally, without extra wiring . Integrated circuits are also called ICs or chips. 集成电路就是一组用单片材料制造的，内部互联的（无外部连线）晶体管。集成电路也叫IC或者芯片。 IC, ULSI * * Large-scale integration (LSI) came to refer to the creation of integrated circuits that had previously been made from multiple discrete components. ULSI：Ultra Large-scale Integration 特大规模集成电路 ULSI circuits can contain 107-109transistors. IC, ULSI * * IMPATT , LED An IMPATT diode (Impact Ionization Avalanche Transit-Time) is a form of high power diode used in high-frequency electronics and microwave devices. They operate at frequencies between about 3 and 100 GHz or more 碰撞雪崩渡越时间二极管用于高频率电子和微波器件中。它们的工作频率通常3-100兆赫兹以上。 * * IMPATT , LED LED（Light Emitting Diode), it can be directly change the photic signal into the electric signal. 发光二极管可以把光信号直接转换成电信号。 * * Outline Overview (para.1, 2 ,3 ,4 ,5) Silicon material (para.6 , 7 , 8) Germanium material(para.9, 10 , 11 , 12) The other semiconductor materials(para.6, 7, 8, 9) Text tour * * Silicon material is the second most abundant element on