一、前言 发光二极管近几年来在计算机、钟表、仪表的数字显示及分立的超小型灯等方面得到了广泛的应用,成为一种最成功的新型显示技术。这种器件具有亮度高、价格低、功耗小、坚固可靠,能与集成电路匹配等特点,因之有着商业生产的价值。 本文将对市场上出售的或正在研制的发光二极管的工艺现状作一评述。有关发光二极管的工艺,已经有了几篇出色的评述性文章。因此,本文的内容将限于介绍最近几年来所取得的新进展。在撰写这篇文章时,用GaAsP和GaP材料制成的红、橙、黄、绿几 I. Introduction LED in recent years in the computer, clocks and watches, digital display and discrete ultra-small lamps and so has been widely used to become one of the most successful new display technology. This device has the characteristics of high brightness, low price, low power consumption, sturdy and reliable, can be integrated with the integrated circuit, which has the value of commercial production. This article reviews the state of the art of light-emitting diodes that are on the market or are being developed. There have been several excellent reviews of light-emitting diode technology. Therefore, the content of this article will be limited to introducing new progress made in recent years. At the time of this writing, red, orange, yellow and green are made of GaAsP and GaP materials