scholarly journals Near-band-edge recombinations in multiwalled boron nitride nanotubes: Cathodoluminescence and photoluminescence spectroscopy measurements

2008 ◽  
Vol 77 (23) ◽  
Author(s):  
P. Jaffrennou ◽  
J. Barjon ◽  
T. Schmid ◽  
L. Museur ◽  
A. Kanaev ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Boron Nitride Nanotubes ◽  
Photoluminescence Spectroscopy ◽  
Band Edge ◽  
Near Band Edge

Optoelectronic studies of boron nitride nanotubes and hexagonal boron nitride crystals by photoconductivity and photoluminescence spectroscopy experiments

2010 ◽  
Vol 247 (11-12) ◽  
pp. 3076-3079 ◽  
Author(s):  
Gurvan Brasse ◽  
Sylvain Maine ◽  
Aurélie Pierret ◽  
Périne Jaffrennou ◽  
Brigitte Attal-Trétout ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Boron Nitride Nanotubes ◽  
Photoluminescence Spectroscopy

Synchrotron Photoluminescence Spectroscopy of Boron Nitride Nanotubes with Different Metal Impurities

2009 ◽  
Vol 1204 ◽  
Author(s):  
Jun Yu ◽  
Ying Ian Chen ◽  
Luhua Li ◽  
Bing-ming Cheng ◽  
Dehong Yu
Keyword(s):  
Electronic Structure ◽  
Boron Nitride ◽  
Boron Nitride Nanotubes ◽  
Photoluminescence Spectroscopy ◽  
Pl Spectra ◽  
Substrate Metal ◽  
Metal Impurities ◽  
Cold Pressed

AbstractIn this paper, the impurity influences of BNNTs on photoluminescence (PL) analysis have been investigated systematically. Similar PL spectra were obtained from bulk disk of the cold-pressed BNNTs and dispersed individual BNNTs deposited on CaF2 substrate. Metal impurities such as Fe and Au do not affect PL emissions of the BNNTs strongly possibly because Au doping creates sever structural damages but do not change the electronic structure.

Near-Band-Edge Photoluminescence Spectroscopy of ZnO Nanowires Embedded in Polymers

2008 ◽  
Vol 53 (9(5)) ◽  
pp. 2844-2846 ◽  
Author(s):  
J.-P. Richters ◽  
T. Voss ◽  
L. Wischmeier ◽  
I. Rckmann ◽  
J. Gutowski
Keyword(s):  
Zno Nanowires ◽  
Photoluminescence Spectroscopy ◽  
Band Edge ◽  
Near Band Edge

Hydrogen Passivation of Shallow Dopants in InP Studied by Photoluminescence Spectroscopy

1995 ◽  
Vol 378 ◽  
Author(s):  
Sathya Balasubramanian ◽  
Vikram Kumar
Keyword(s):  
Photoluminescence Spectroscopy ◽  
Band Edge ◽  
Near Band Edge ◽  
Hydrogen Passivation ◽  
Acceptor Pair ◽  
Donor Acceptor ◽  
Donor Acceptor Pair

ABSTRACTThe effect of hydrogenation on the photoluminescence (PL) of InP : Mg, InP : Zn and undoped n-InP is presented. An increase in the near band edge pl intensity due to passivation of non-radiative centers was observed in all the samples. A donor - acceptor pair transition was observed before hydrogenation in the InP : Mg sample and after hydrogenation in the InP : Zn sample due to the acceptor deactivation. In n-InP the enhancement of donor bound exciton after hydrogenation points to the absence of donor passivation.

Probing of Ni-Encapsulated Ferromagnetic Boron Nitride Nanotubes by Time-Resolved and Steady-State Photoluminescence Spectroscopy

2012 ◽  
Vol 116 (23) ◽  
pp. 12803-12809 ◽  
Author(s):  
Arava Leela Mohana Reddy ◽  
Bipin Kumar Gupta ◽  
Tharangattu N. Narayanan ◽  
Angel A. Martí ◽  
Pulickel M. Ajayan ◽  
...  
Keyword(s):  
Steady State ◽  
Boron Nitride ◽  
Boron Nitride Nanotubes ◽  
Photoluminescence Spectroscopy ◽  
Time Resolved

The origins of near band-edge transitions in hexagonal boron nitride epilayers

2016 ◽  
Vol 108 (5) ◽  
pp. 052106 ◽  
Author(s):  
X. Z. Du ◽  
J. Li ◽  
J. Y. Lin ◽  
H. X. Jiang
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Band Edge ◽  
Near Band Edge

Molecular insights on the dynamic stability of peptide nucleic acid functionalized carbon and boron nitride nanotubes

2021 ◽  
Vol 23 (1) ◽  
pp. 219-228
Author(s):  
Nabanita Saikia ◽  
Mohamed Taha ◽  
Ravindra Pandey
Keyword(s):  
Nucleic Acid ◽  
Boron Nitride ◽  
Nucleic Acids ◽  
Dynamic Stability ◽  
Peptide Nucleic Acid ◽  
Rational Design ◽  
Peptide Nucleic Acids ◽  
Boron Nitride Nanotubes ◽  
Molecular Hybrids ◽  
Single Wall Nanotubes

The rational design of self-assembled nanobio-molecular hybrids of peptide nucleic acids with single-wall nanotubes rely on understanding how biomolecules recognize and mediate intermolecular interactions with the nanomaterial's surface.

Density Functional Theory Study of Antioxidant Adsorption onto Single- Wall Boron Nitride Nanotubes: Design of New Antioxidant Delivery Systems

2019 ◽  
Vol 22 (7) ◽  
pp. 470-482
Author(s):  
Samereh Ghazanfary ◽  
Fatemeh Oroojalian ◽  
Rezvan Yazdian-Robati ◽  
Mehdi Dadmehr ◽  
Amirhossein Sahebkar
Keyword(s):  
Density Functional Theory ◽  
Boron Nitride ◽  
Vitamin C ◽  
Electric Field ◽  
External Electric Field ◽  
Lipoic Acid ◽  
Density Functional ◽  
Cell Interaction ◽  
Boron Nitride Nanotubes ◽  
Functional Theory

Background: Boron Nitride Nanotubes (BNNTs) have recently emerged as an interesting field of study, because they could be used for the realization of developed, integrated and compact nanostructures to be formulated. BNNTs with similar surface morphology, alternating B and N atoms completely substitute for C atoms in a graphitic-like sheet with nearly no alterations in atomic spacing, with uniformity in dispersion in the solution, and readily applicable in biomedical applications with no obvious toxicity. Also demonstrating a good cell interaction and cell targeting. Aim and Objective: With a purpose of increasing the field of BNNT for drug delivery, a theoretical investigation of the interaction of Melatonin, Vitamin C, Glutathione and lipoic acid antioxidants using (9, 0) zigzag BNNTs is shown using density functional theory. Methods: The geometries corresponding to Melatonin, Vitamin C, Glutathione and lipoic acid and BNNT with different lengths were individually optimized with the DMOL3 program at the LDA/ DNP (fine) level of theory. Results: In the presence of external electric field Melatonin, Vitamin C, Glutathione and lipoic acid could be absorbed considerably on BNNT with lengths 22 and 29 Å, as the adsorption energy values in the presence of external electric field are considerably increased. Conclusion: The external electric field is an appropriate technique for adsorbing and storing antioxidants on BNNTs. Moreover, it is believed that applying the external electric field may be a proper method for controlling release rate of drugs.

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