形形色色的光电器件,不仅在工业自动化方面,而且在现代通信、卫星系统、部队装备、计算机系统等方面,都发挥着重要作用。光电器件是指受到光照时能改变其导电性能的器件(称为光电导器件),以及受到适量的电信号激发时能够发光的器件(称为发光器件)。这类器件大多是用半导体材料制作的,所以又叫半导体光电器件。光电导器件 A wide range of optoelectronic devices, not only in industrial automation, but also in modern communications, satellite systems, military equipment, computer systems, etc., all play an important role. Optoelectronic devices are devices that change their electrical conductivity when illuminated (called photoconductive devices) and those that emit light when excited by the appropriate amount of electrical signals (called light-emitting devices). Most of these devices are made of semiconductor materials, so called semiconductor optoelectronic devices. Photoconductive device