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日本东芝公司已制成世界最高亮度1.5cd(工作电流20mA 时),波长573mm 的绿色LED(发光二极管)。发光材料采用高效发光的 InGaAIP,另外,器件结构采用高效发光的新结构。以前的绿色 LED 采用 GaP 材料,发光效率受到限制,最高亮度为0.8cd。东芝公司采用以下方法实现高效发光:有效改变电子能态,加一层能转换光的直接过渡型 InGaAIP,采用金属有机物化学汽相淀积法(MOCVD法),在 InGaAIP 层(发光区)的下
Toshiba Japan has made the world’s highest brightness 1.5cd (operating current 20mA), the wavelength of 573mm green LED (light-emitting diode). Luminescent materials using highly efficient InGaAIP luminescence, In addition, the device structure with a new structure of high-efficiency light. The previous green LED using GaP material, luminous efficiency is limited, the maximum brightness of 0.8cd. Toshiba Corporation uses the following method to achieve efficient light-emitting: Effectively change the electronic energy state, plus a layer of direct transition-type InGaAlP can be converted by light, the use of metal organic chemical vapor deposition method (MOCVD method), InGaAIP layer