設計與製作微型之寬波段近紅外光源

Design and Fabrication of Near-Infrared Broadband Micro-Light Source

劉毓鈞(Yu-Chun Liu)

指導教授 ： 吳孟奇 ； 何充隆

國立清華大學/電機資訊學院/電子工程研究所/碩士(2014年)

摘要

中文摘要
在此研究中，利用半導體製程之技術，於矽基板上製作一微型鎢絲燈源。於燈絲上設計不同週期之光子晶體結構，期望藉由此結構將發光範圍侷限在近紅外之波段，以達本研究之目的。我們將確立元件之製程流程，並採用兩種不同製程進行元件之製作與改善。在舊製程中，面臨一些製程上之難題，其一為鎢絲無法在高溫下進行熱退火處理，因而無法得到低阻值之鎢薄膜，致使後續之元件量測，電流不易通過燈絲區域，熱無法累積在鎢絲上，燈絲不易發光。另一則為後續之掏空製程，易受液體之表面張力影響，元件易有塌陷之問題，促使良率過低。在新製程中，能將此兩項問題有效的解決。
本論文將對薄膜沉積進行探討，利用四點探針、SEM、EDS、XRD，分析不同薄膜之特性，建立良好之薄膜沉積參數。在元件之量測上，亦使用NKT系統與真空光電探針系統，進行元件之反射率及燈絲發光譜之量測。

關鍵字

近紅外光 ； 光子晶體 ； 懸浮製程 ； 鎢絲

並列摘要

Abstract　
　　In this study, we use the technology of semiconductor process to fabricate a Micro-filament on the silicon substrate. We designed the photonic crystal structures with different period on the filament and expected that structure can confined the band to achieve the purpose of this study. We will establish the process flow, and use two different processes. In the old process, we faced with some problems. One is the annealing process can’t at high temperature, and therefore can’t obtain a low resistance for tungsten film, that caused the current through the filament area hardly in the subsequent measurement. Because the heat can’t be accumulated on the tungsten and the filament emitted difficultly. The other is the suspended process, was easily influenced by surface tension of liquids. The devices tend to collapse and reduced yield. In the new process, the two problems can be effectively solved.
This study will discuss the properties of different films, using four-point probe, SEM, EDS, XRD, analyze the characteristics of different films and establish better deposited parameters. We also use NKT system and vacuum probe system for measuring reflectance and emission spectral of the device.

並列關鍵字

near-infared ； photonic crystal ； suspension ； tungsten

參考文獻

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