Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2020 May 13;10:7904. doi: 10.1038/s41598-020-64809-4

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

(a) PL and PLE spectra of the GaP structures performed at 10 K; dashed lines indicate the absorptions edges labeled A, B and C. Inset: the same PL and PLE spectra showed in (a) with broad range. The black vertical arrow indicates the detection position at 1.68 eV, used in PLE measurements. PLE was acquired using the maximum of the Xe lamp single monochromator aperture slit (2 mm) and a long integration time, in order to increase the signal/noise ratio of the ground absorption edges. (b) PLE performed with Xe lamp single monochromator aperture slit of 0.75 mm; additional absorption edge was observed at high energy and labeled D. The black arrow indicates the excitonic peak observed for transition C. Inset: schematic representation of the first absorption edges observed in PLE measurements. Dashed (solid) lines indicate the weak (strong) absorption edges with monotonic (parabolic) increase with energy. (c) Electronic band structure of the WZ GaP calculated by DFT method using HSE06 functional, implemented in the Vienna ab initio simulation package (VASP)^15,16, version 5.4.4.