本論文使用的是雷射光源是飛秒脈衝藍寶石雷射，對生長在LAO(LiAlO2)基板上的氮化銦薄膜進行變溫以及改變雷射功率的時間解析光致螢光(Time-resolved photoluminescence)量測。隨著溫度的改變，有效縱向光學聲子釋放時間從溫度250~35 K是197~58 fs，有效縱向光學聲子釋放時間有越來越小的趨勢。在衰退率計算方面，衰退率包含非發光輻射復合、發光輻射復合以及歐傑復合三個原因。隨著激發功率的變大，產生的載子濃度也越多，歐傑復合在衰退率所造成的影響也越大。當載子濃度越來越大時，衰退率開始由歐傑復合所主導。

The thesis investigates hot carrier relaxation and carrier recombination
mechanism of a InN thin film grown on LAO(LiAlO2) substrate with a ultrafast
time-resolved photoluminescence apparatus. Carriers were excited with laser pulses of energy 1.5 eV and of pulsewidth 150 fs from a Ti:sapphire laser. The photoexcited carriers relax excessive energy mostly within 10 ps thorough carrier-LO-phonon interaction. The effective carrier-LO-phonon emission times were estimated 197 to 58 fs in the temperature range from 250 to 35 K. The Shockley-Read-Hall coefficient was found around 0.8 ns-1. The Auger recombination was trivial at 35 K and become significant at 250 K. The fitted radiative recombination was much smaller than the theoretical estimate. Both effective carrier-LO-phonon scattering times and the radiative and nonradiative decay rates of the studied m-plane InN were found to be smaller than those of c-plane InN in other reports.

論文審定書 ..................................................................................................................... i
摘要 ............................................................................................................................... ii
Abstract .........................................................................................................................iii
目錄 ............................................................................................................................... iv
圖次 ............................................................................................................................... v
表次 .............................................................................................................................. vii
第一章 導論 ................................................................................................................ 1
1.1文獻探討 .......................................................................................................... 1
1.2論文架構 .......................................................................................................... 4
第二章 實驗原理與架構 ............................................................................................ 5
2.1非線性光學原理 .............................................................................................. 5
2.2和頻光原理 ...................................................................................................... 7
2.3實驗架構 ........................................................................................................ 12
第三章 載子動力學 .................................................................................................. 17
3.1 在導電帶中電子釋放能量方式 ................................................................... 17
3.2電子從導電帶掉回價電帶的釋放能量方式 ................................................ 19
3.3衰退率計算 .................................................................................................... 21
3.4光生載子濃度計算 ........................................................................................ 24
第四章 分析與討論 .................................................................................................. 27
4.1光致螢光光譜 ................................................................................................ 28
4.2載子冷卻時間 ................................................................................................ 30
4.3生命週期分析 ................................................................................................ 39
4.4衰退率分析 .................................................................................................... 47
第五章 結論 .............................................................................................................. 57
參考文獻 ...................................................................................................................... 59

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