Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/47481
Title: Defect Assisted Optical Limiting Performance of Hexagonal Boron Nitride Nanosheets in Aqueous Suspension and Pmma Nanocomposite Films
Authors: Unlu, Bekir Asilcan
Karatay, Ahmet
Yildiz, Elif Akhuseyin
Yola, Mehmet Lutfi
Yuksek, Mustafa
Atar, Necip
Elmali, Ayhan
Keywords: Boron Nitride
Nanosheet
Optical Limiting
Nonlinear Absorption
Photoluminescence
Publisher: Elsevier
Abstract: Defect-assisted nonlinear absorption (NLA) and optical limiting (OL) performance of hexagonal boron nitride nanosheets (h-BNNS) in aqueous suspension and in polymethyl methacrylate matrix (PMMA) as nanocomposite films were studied using open-aperture Z-scan method. To evaluate the transmission in open-aperture Z-scan data, a theoretical model accounting one photon absorption (OPA), two photon absorption (TPA), free carrier absorption (FCA) and saturation of each process was considered. Defect-assisted NLA coefficients and saturation intensity thresholds were extracted from the fitting of the experimental results for 532 and 1064 nm pulse wavelengths. Strong defect-assisted NLA response of h-BNNS was observed while NLA at 532 nm was considerably stronger. This is attributed to the excitation of a greater number of defect states over a wider energy range. Our findings showed that h-BNNS/PMMA nanocomposite films feature highly required properties in OL applications and can function in OL applications in a wide spectral range (-200-1064 nm).
Description: Yuksek, Mustafa/0000-0003-2169-1827; Karatay, Ahmet/0000-0001-9373-801X; Unlu, Bekir Asilcan/0000-0001-7815-362X
URI: https://doi.org/10.1016/j.optmat.2021.111630
ISSN: 0925-3467
1873-1252
Appears in Collections:Mühendislik Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Files in This Item:
File SizeFormat 
WOS000706786300008.pdf3.64 MBAdobe PDFView/Open
Show full item record



CORE Recommender

SCOPUSTM   
Citations

19
checked on Mar 29, 2025

WEB OF SCIENCETM
Citations

18
checked on Mar 31, 2025

Page view(s)

90
checked on Feb 8, 2025

Download(s)

44
checked on Feb 8, 2025

Google ScholarTM

Check




Altmetric


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