Theoretical and experimental studies on junction temperature of light-Emitting diodes / 李宸 毅 撰 .- 彰化縣大村鄉
李宸毅、廖豐標, 陳昭翰
E-mail: [email protected]
ABSTRACT
Increase in luminous efficiency is a key reason that light-emitting diodes (LED) become more popular in lighting market. Moreover, the advantages of LEDs include long lifetime, fast response speed, small size, low power consumption, and friendly to the
environment. This study utilize an automated junction-temperature measurement system, and the technology computer-aided design (TCAD) software of Synopsys, Inc. for simulating characteristics of LEDs, Taurus TCAD (including Taurus TSUPREM-4 and Taurus Medici) and Sentaurus TCAD (including Sentaurus Process and Sentaurus Device) are provided by National Chip Implementation Center (CIC) and National Center for High-performance Computing (NCHC), respectively. Comparing the measured and simulated results, it will direct the developing direction for manufacturing the LEDs with high efficiency and reliability. Therefore, after finishing this study of luminous efficiency and junction temperature, it is possible to cooperate with the industry in LED heat dissipation and illumination. Key Words : Light-emitting diodes, Forward bias, Junction temperature, Taurus TCAD , Sentaurus TCAD
Keywords : Light-emitting diodes、Forward bias、Junction temperature、Taurus TCAD , Sentaurus TCAD Table of Contents
封面內頁 簽名頁 中文摘要．．．．．．．．．．．．．．．．．．．．．．．iii 英文摘要．．．．．．．．．．．．．
．．．．．．．．．．iv 誌謝．．．．．．．．．．．．．．．．．．．．．．．．．v 目錄．．．．．．．．．．．．
．．．．．．．．．．．．．vi 圖目錄．．．．．．．．．．．．．．．．．．．．．．．．viii 表目錄．．．．．．．
．．．．．．．．．．．．．．．．．xi 第一章 緒論 ．．．．．．．．．．．．．．．．．．．1 1.1前言．．．．．．
．．．．．．．．．．．．．．．1 1.2研究目的與方法．．．．．．．．．．．．．．．．3 第二章 實驗原理．．．．．
．．．．．．．．．．．．6 2.1發光二極體原理與介紹．．．．．．．．．．．．．6 2.1.1 發光二極體的發光原理．．．
．．．．．．．．8 2.1.2 間接能隙與直接能隙半導體．．．．．．．．．9 2.2半導體材料．．．．．．．．．．．．．．
．．．10 2.2.1 發光二極體發光效率．．．．．．．．．．．12 2.2.2 溫度對能隙之影響．．．．．．．．．．．．13 2.2.3 溫度對波長之影響．．．．．．．．．．．．14 第三章 實驗方法．．．．．．．．．．．．．．．．16 3.1實驗步驟與方 法．．．．．．．．．．．．．．．17 3.2順向電壓法．．．．．．．．．．．．．．．．．18 3.3接面電流與能?關係．
．．．．．．．．．．．．18 3.4接面電壓與溫度關係．．．．．．．．．．．．．20 第四章 量測的結果與討論 ．．．．
．．．．．．．．22 4.1發光二極體結構與量測．．．．．．．．．．．．22 4.2量測方法說明．．．．．．．．．．．．
．．．．22 4.3量測系統電路控制說明．．．．．．．．．．．．23 第五章 模擬的結果與討論．．．．．．．．．．．．
．41 5.1 TCAD Taurus軟體介紹．．．．．．．．．．．．41 5.2 TCAD Taurus模擬結果圖．．．．．．．．．．．41 5.3 TCAD Sentaurus軟體介紹．．．．．．．．．．．44 5.4 TCAD Sentaurus模擬結果圖形．．．．．．．．．45 5.5溫度與 發光二極體的I-V特性曲線之間的關係．．．．55 第六章 結論．．．．．．．．．．．．．．．．．．．．．．61 參考文 獻 ．．．．．．．．．．．．．．．．．．．．．．．63 附錄 ．．．．．．．．．．．．．．．．．．．．．．．．
．66
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