氮化銦鎵U形藍光發光二極體的光電特性與光場特性之研究

Abstract

傳統都是製作方形藍光發光二極體，然而，對於光場我們並不是那麼熟悉，不確定實際側面發光與正向發光之物理特性，因此我們從光鋐科技股份有限公司購買藍光磊晶片並設計製作各個不同大小的U形發光二極體，並利用 Osram之型號SFH2240的光電偵測器進行光場分析。光場分析包刮水平移動與垂直移動光電偵測器，比較各個不同大小的U形與方形藍光發光二極體之差異。 本篇除了會提到U形發光二極體與方形光場差異外，也會從中比較有泡氫氧化四甲基銨鹼性液體(TMAH)與沒泡之U形發光二極體光特性與電特性差異，最後也會比較其光譜，觀察波峰位移現象。

Traditionally, square blue light-emitting diodes (LEDs) have been manufactured. However, we are not very familiar with the light field and are uncertain about the physical characteristics of side emission and forward emission of light-emitting diodes. Therefore, we purchased blue LED epitaxial wafers from Epileds Technologies, Inc. and designed and fabricated U-shaped LEDs of various sizes. The light field analysis was conducted using the Osram photodetector model SFH2240. The analysis includes both horizontal and vertical movements of the photodetector to compare the differences in light emission between U-shaped and square blue LEDs of different sizes. This paper will not only discuss the differences in the light field of U-shaped LEDs versus square LEDs, but also compare the optical and electrical characteristics of U-shaped LEDs with and without TMAH alkaline liquids solution soaking. Finally, the spectral comparison will be made to observe any peak wavelength shifts.