Defects with Deep Levels in High-Voltage Gradual p–i–n Heterojunctions AlGaAsSb/GaAs

IF 0.6 4区 物理与天体物理 Q4 PHYSICS, CONDENSED MATTER Semiconductors Pub Date : 2024-09-16 DOI:10.1134/s1063782624040146
M. M. Sobolev, F. Yu. Soldatenkov
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Abstract

Abstract—

High-voltage gradual p0in0 junctions of AlxGa1 – xAs1 – ySby with x ~ 0.24 and y ~ 0.05 in the i‑region were studied using capacitance-voltage characteristics method and transient spectroscopy of deep levels. It has been established that the effective recombination trap in them is the DX-center of the Si donor impurity, with a thermal activation energy Et = 414 meV, a capture cross section σn = 1.04 × 10–14 cm2, and a concentration Nd = 2.4 × 1015 cm–3. In the heterostructures studied, there were no deep levels associated with dislocations.

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高压渐变 pi-n 异质结 AlGaAsSb/GaAs 中的深层缺陷
摘要-采用电容-电压特性法和深电平瞬态光谱法研究了 i 区 x ~ 0.24 和 y ~ 0.05 的 AlxGa1 - xAs1 - ySby 的高压渐变 p0-i-n0 结。结果表明,它们中的有效重组陷阱是硅供体杂质的 DX 中心,热活化能 Et = 414 meV,俘获截面 σn = 1.04 × 10-14 cm2,浓度 Nd = 2.4 × 1015 cm-3。在所研究的异质结构中,不存在与位错相关的深层位。
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来源期刊
Semiconductors
Semiconductors 物理-物理:凝聚态物理
CiteScore
1.50
自引率
28.60%
发文量
131
审稿时长
3-6 weeks
期刊介绍: Publishes the most important work in semiconductor research in the countries of the former Soviet Union. Covers semiconductor theory, transport phenomena in semiconductors, optics, magnetooptics, and electrooptics of semiconductors, semiconductor lasers and semiconductor surface physics. The journal features an extensive book review section.
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