直接间隙半导体纳米晶体中双激子的阈值光产生

IF 1.4 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

JETP Letters Pub Date : 2025-01-20 DOI:10.1134/S0021364024603749

S. A. Fomichev, V. A. Burdov

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引用次数: 0

摘要

研究了在具有非简并导带的直接间隙半导体纳米晶体中，当吸收一个能量等于该纳米晶体带隙两倍的单光子时，产生两个电子-空穴对（双激子）。结果表明，这一过程只有在电子相互作用和与晶格场相互作用的情况下才能发生。计算了这个过程的速率，发现它强烈地依赖于纳米晶体的尺寸。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Threshold Photogeneration of Biexcitons in Direct-Gap Semiconductor Nanocrystals

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Threshold Photogeneration of Biexcitons in Direct-Gap Semiconductor Nanocrystals

The generation of two electron–hole pairs (a biexciton) in a nanocrystal of a direct-gap semiconductor with a nondegenerate conduction band upon the absorption of a single photon with the energy equal to twice the band gap of the nanocrystal is considered. It is shown that the process can take place only in the presence of the interaction of electrons both with each other and with the crystal-lattice field. The rate of this process is calculated and found to depend strongly on the nanocrystal size.

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来源期刊

JETP Letters 物理-物理：综合

CiteScore

2.40

自引率

30.80%

发文量

164

审稿时长

3-6 weeks

期刊介绍： All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.