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| 研究生： |
彭雅鈴 Ya Ling Peng |
|---|---|
| 論文名稱： |
磷砷化鎵銦薄膜結構調制光譜之研究 Study of Modulation Spectroscopy of Microstructures InGaAsP |
| 指導教授： | 陸健榮 |
| 學位類別： |
碩士 Master |
| 系所名稱： |
物理學系 Department of Physics |
| 畢業學年度： | 87 |
| 語文別： | 中文 |
| 論文頁數： | 101 |
| 中文關鍵詞： | 多量子井 、應力 、p-i-n 、光調制反射光譜 、Franz-Keldysh 振盪 |
| 英文關鍵詞： | multiple quantum wells, strain, p-i-n, photoreflectance (PR), Franz-Keldysh oscillation(FKO) |
| 論文種類： | 學術論文 |
| 相關次數： | 點閱：194 下載：0 |
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我們以光調制反射光譜(Photoreflectance/PR)來研究由分子束磊晶法(MBE)長成的磷化銦及磷砷化鎵銦之多層薄膜結構在不同溫度下其電—光性質的變化。實驗結果包含了量子井躍遷及兩組Franz-Keldysh振盪譜形(FKO)。由於樣品內部為p-i-n結構，其p型與n型摻雜可提供大量的空間自由載子，形成空間電荷造成空間電場，由實驗的振盪譜形可推算出內建電場的大小。而藉由理論模型計算可以得到量子井內子能階的躍遷能量值，並與實驗譜線擬合的結果相比較。
We have studied the strained multiple quantum wells (MQW) InGaAsP/InP p-i-n heterostructures using photo-reflectance(PR) at various temperatures. The samples used in our experiments were grown by molecular-beam-epitaxy(MBE). The experimental spectrum consists of various interband transition features and Franz-Keldysh oscillations (FKOs). Experimental spectra were fitted to calculated lineshapes to extract correct interband transition energies and internal electric filed, then compared to theoretical results.
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