Quantum Theory of Free-Carrier Absorption in Quasi-Two-Dimensional Semiconducting Structures

C. Giner, M. Antón
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引用次数: 14

Abstract

The quantum theory of free carrier absorption in quasi-two-dimensional structures like thin films, layered heterojunctions, and inversion layers is generalized to the cases when the carriers are scattered by polar optical phonons, piezoelectric phonons, and nonpolar optical phonons. The obtained results are compared with those of the quantum theory of free-carrier absorption in a bulk semiconductor and it is found that the absorption coefficient increases when the width of the layer or thin film decreases in all the cases. Die Quantentheorie der Absorption freier Trager in quasi-zweidimensionalen Strukturen, wie duinnen Schichten, geschichteten Heterouibergangen und Inversionsschichten, wird auf die Falle verallgemeinert, wo die Trager durch polare optische Phononen, piezoelektrische Phononen und nichtpolare optische Phononen gestreut werden. Die erhaltenen Ergebnisse werden mit denen der Quantentheorie der Absorption freier Trager in einem Volumenhalbleiter verglichen, und es wird gefunden, das der Absorptionskoeffizient anwachst, wenn in alien Fallen die Breite der Schicht oder des duinnen Films abnimmt.
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准二维半导体结构中自由载流子吸收的量子理论
作用于两只脚由于两种比较的结果是:尝试与另一种分离机载的分离理论在一片空白前具有吸收缓冲在另一个附近发现了在所有通道里堆起鲑鱼舞或电影decreases的怀抱在准二维结构中,例如电干扰干扰理论,亲和力理论和振荡理论,则基于吸附干扰力理论,即航空母体传播的机构是依靠运动性仪表、哔哔电子留声机和非北极光留声机传播的。留存结果和在体积(在体积)导体上的吸收吸收光理论进行对比,在星体中减少表层或肉质模糊时,吸收系数会增加。
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