Electric field profiles of LTG-GaAs/GaAs and LTG-GaAs/n-GaAs samples

Authors

Rosa Linda B. Miranda ⋅ PH National Institute of Physics, University of the Philippines Diliman
Crizia C. Alcantara ⋅ PH National Institute of Physics, University of the Philippines Diliman
Jermaine Nicole A. Barce ⋅ PH National Institute of Physics, University of the Philippines Diliman
Alexander E. De los Reyes ⋅ PH National Institute of Physics, University of the Philippines Diliman
Sheryl Ann B. Vizcara ⋅ PH National Institute of Physics, University of the Philippines Diliman
John Daniel E. Vasquez ⋅ PH National Institute of Physics, University of the Philippines Diliman
Elizabeth Ann P. Prieto ⋅ PH National Institute of Physics, University of the Philippines Diliman
Arnel A. Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Armando S. Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman
Elmer S. Estacio ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

We demonstrate the significance of incorporating an n-GaAs buffer in an LTG-GaAs epitaxial layer by comparing it to an undoped GaAs buffer in an LTG-GaAs epitaxial layer. The interface electric field of the LTG-GaAs/n-GaAs/SI-GaAs sample differed by as much as 147% in comparison to that of the LTG-GaAs/GaAS/SI-GaAs sample. Inclusion of n-GaAs buffer before deposition of LTG-GaAs resulted to a greater electric field. These samples were examined by constructing their energy band diagram, consequently deriving their electric fields. The calculated values were experimentally verified by performing photoreflectance spectroscopy.

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Issue

2014: Proceedings of the 32nd Samahang Pisika ng Pilipinas Physics Congress

Towards enhanced physics research and education
17-20 October 2014, University of Philippines Diliman, Quezon City

Article ID

SPP2014-2A-04

Section

Condensed Matter Physics

Published

2014-10-17

How to Cite

[1]

RLB Miranda, CC Alcantara, JNA Barce, AE De los Reyes, SAB Vizcara, JDE Vasquez, EAP Prieto, AA Salvador, AS Somintac, and ES Estacio, Electric field profiles of LTG-GaAs/GaAs and LTG-GaAs/n-GaAs samples, Proceedings of the Samahang Pisika ng Pilipinas 32, SPP2014-2A-04 (2014). URL: https://proceedings.spp-online.org/article/view/1797.