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- 失序合金 In戓Al[fec5]As 之光致發光機制研究
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題 名 | 失序合金 In戓Al[fec5]As 之光致發光機制研究=Influence of Strain and Order-Disorder Alloy Cluster on the Photoluminescence Properties of In戓Al[fec5]As |
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作 者 | 江國成; | 書刊名 | 筧橋學報 |
卷 期 | 5 1998.09[民87.09] |
頁 次 | 頁205-224 |
分類號 | 336.5 |
關鍵詞 | 砷化銦鋁; 光致發光; 副線譜; In戓Al[fec5]As; Photoluminescence; Subpeak; |
語 文 | 中文(Chinese) |
中文摘要 | 本文報導In�翠l�� As/InP(0.48<x<0.53)之發光現象。由調變激發功率、及調變 環境溫度所產生的光致發光譜線型演化特徵, 從所謂 "S" 型遷移峰譜中,解析出一低能( 副線譜)分量,此副線譜並非源於雜質能階。 依據 DCXRD 的結果找出 In �� Al �� As 的 組成比率、磊晶層與基底間的匹配程度及拉曼散射譜中的 LO 峰譜非對稱性變寬、移位,確 認光致發光譜中的副線譜直接與晶層間的伸張(或壓)應變程度有關。綜合考量合金組分( X )、有序與無序結構之類原子群式的集團、應變效應,提出一個發光躍遷模型以解釋本實 驗現象並對文獻爭議之疑點提出討論。依據本文提出之模型,受爭議的 InAlAs 之光譜行為 ,可獲得較圓滿之解釋。 |
英文摘要 | The dependence of PL spectral characterization on In�翠l�� As (0.48 < X < 0.53) as functions of temperature and excitation power have been investigated. The "S" shape shifting peak as a function of temperature is observed. A sub-peak can be devoluted from our PL spectra of the alloy composition x near 0.52 sample. Considering the effect of alloy composition which consists of ordered- and disorder- domain, fluctuation at the wellbarrier interface, and coherent strain, a model is suggested in this paper. According to this model, the PL experimental results can be reasonable explanation. |
本系統中英文摘要資訊取自各篇刊載內容。