Investigation of the effect of different thicknesses and thermal annealing on the optical properties of GaAs0.1P0.89N0.01 alloys grown on GaP substrates

Alburaiha, H.A.; Albalawi, H.; Henini, M.

Abstract

This work investigates the effect of the thickness of the epitaxial layer (100 nm and 1 ?m) on the optical properties of quaternary GaAs0.1P0.89N0.01 alloys. Furthermore, the effect of rapid thermal annealing (RTA) on their properties has been studied using the Photoluminescence (PL) technique. Increasing the thickness of the epilayer led to an enhancement of the PL intensity as well as the energy bandgap, which was shifted to higher energy (from 1.82 eV in 100 nm to 1.94 eV in 1 ?m layer). However, the 1.94 eV bandgap energy is not ideal for solar cells based materials grown on GaP substrates. Post-growth thermal annealing by rapid thermal annealing (RTA) for both samples resulted in an enhancement in the optical properties as observed by a decrease of the Full Width at Half Maximum (FWHM) and an increase of the PL intensity. Therefore, all results obtained in this study indicate that GaAs0.1P0.89N0.01 with 100 nm epilayer thick is better choice to fabricate good efficiency solar cells based materials on GaP substrates as compared to 1 ?m sample.

Citation

Alburaiha, H., Albalawi, H., & Henini, M. (2020). Investigation of the effect of different thicknesses and thermal annealing on the optical properties of GaAs0.1P0.89N0.01 alloys grown on GaP substrates. Materials Science in Semiconductor Processing, 117, https://doi.org/10.1016/j.mssp.2020.105143

• Journal Article Type: Article
• Acceptance Date: Apr 13, 2020
• Online Publication Date: May 8, 2020
• Publication Date: 2020-10
• Deposit Date: May 13, 2020
• Publicly Available Date: May 9, 2021
• Journal: Materials Science in Semiconductor Processing
• Print ISSN: 1369-8001
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 117
• Article Number: 105143
• DOI: https://doi.org/10.1016/j.mssp.2020.105143
• Keywords: Mechanical Engineering; General Materials Science; Mechanics of Materials; Condensed Matter Physics
• Public URL: https://nottingham-repository.worktribe.com/output/4430758
• Publisher URL: https://www.sciencedirect.com/science/article/abs/pii/S1369800119320293