Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/12099
Title: Study of the effect of various chemical polishing treatments on MBEGrown CdTe/GaAs (211)B heterostructures
Authors: Bilgilisoy, Elif
Özçeri, Elif
Tarhan, Enver
Keywords: Molecular beam epitaxy
Thin film polishing
Raman spectroscopy
Issue Date: 2020
Publisher: Sakarya Üniversitesi
Abstract: A three-inch-diameter high quality CdTe thin film was grown on a GaAs (211)B substrate by molecular beam epitaxy (MBE) in ultra-high vacuum conditions. The CdTe/GaAs (211)B heterostructure was then cut into several sample pieces. A few as-grown sample pieces were subjected to chemical etching solutions which created etch pits on the surface. The scanning electron microscopy images of such samples were used to calculate the etch pit densities on the surface. In addition, several as-grown samples were subjected to chemical polishing treatments under different conditions to quantify the removal of O and Te-O structures from the surface. Atomic force microscopy was used to determine as-grown and polished surface morphology and the polish rate of chemical solutions. A study of the surface stoichiometry and the chemical composition of the as-grown and polished CdTe (211)B surfaces were carried out by using Xray photoelectron spectroscopy. Bulk structural qualities of the as-grown and polished samples were studied in terms of the vibrational and phonon modes via confocal Raman spectroscopy. From a comparative analyses of the results, the best chemical polishing conditions for the MBEgrown CdTe (211)B heterostructure were determined. Keywords: Molecular beam epitaxy, CdTe thin film, GaAs substrate, thin film polishing, XPS, Raman spectroscopy, AFM
URI: https://doi.org/10.16984/saufenbilder.748315
https://hdl.handle.net/11147/12099
https://search.trdizin.gov.tr/yayin/detay/471879
ISSN: 1301-4048
2147-835X
Appears in Collections:Physics / Fizik
TR Dizin İndeksli Yayınlar / TR Dizin Indexed Publications Collection

Files in This Item:
File SizeFormat 
document (1).pdf2.69 MBAdobe PDFView/Open
Show full item record



CORE Recommender

Page view(s)

6,450
checked on Feb 26, 2024

Download(s)

26
checked on Feb 26, 2024

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.