scholarly journals Optical properties of heavily boron-doped nanocrystalline diamond films studied by spectroscopic ellipsometry

2008 ◽  
Vol 93 (13) ◽  
pp. 131910 ◽  
Author(s):  
A. Zimmer ◽  
O. A. Williams ◽  
K. Haenen ◽  
H. Terryn
Keyword(s):  
Optical Properties ◽  
Spectroscopic Ellipsometry ◽  
Diamond Films ◽  
Nanocrystalline Diamond ◽  
Boron Doped ◽  
Nanocrystalline Diamond Films

scholarly journals Electronic and optical properties of boron-doped nanocrystalline diamond films

2009 ◽  
Vol 79 (4) ◽  
Author(s):  
W. Gajewski ◽  
P. Achatz ◽  
O. A. Williams ◽  
K. Haenen ◽  
E. Bustarret ◽  
...  
Keyword(s):  
Optical Properties ◽  
Diamond Films ◽  
Nanocrystalline Diamond ◽  
Electronic And Optical Properties ◽  
Boron Doped ◽  
Nanocrystalline Diamond Films

Electrical and optical characteristics of boron doped nanocrystalline diamond films

Vacuum ◽  
2019 ◽  
Vol 168 ◽  
pp. 108813 ◽  
Author(s):  
T.H. Stuchliková ◽  
Z. Remes ◽  
V. Mortet ◽  
A. Taylor ◽  
P. Ashcheulov ◽  
...  
Keyword(s):  
Diamond Films ◽  
Nanocrystalline Diamond ◽  
Optical Characteristics ◽  
Boron Doped ◽  
Nanocrystalline Diamond Films

Preparation and Electrochemical Characterization of DNA-modified Nanocrystalline Diamond Films

2002 ◽  
Vol 737 ◽  
Author(s):  
Wensha Yang ◽  
Orlando Auciello ◽  
James E. Butler ◽  
Wei Cai ◽  
John A. Carlisle ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Dna Hybridization ◽  
Diamond Films ◽  
Nanocrystalline Diamond ◽  
Dna Oligonucleotides ◽  
Quantitative Studies ◽  
Boron Doped ◽  
Complementary Sequences ◽  
Nanocrystalline Diamond Films

ABSTRACTNanocrystalline diamond thin films of sub-micron thickness have been covalently modified with DNA oligonucleotides. Quantitative studies of hybridization of surface-bound oligonucleotides with fluorescently tagged complementary and non-complementary oligonucleotides were performed. The results show no detectable nonspecific adsorption, with extremely good selectivity between matched and mismatched sequences. Impedance spectroscopy measurements were made of DNA-modified boron-doped nanocrystalline diamond films. The results show that exposure to non-complementary sequences induce only small changes in impedance, while complementary DNA sequences produce a pronounced decrease in impedance. The combination of high stability, selectivity, and the ability to directly detect DNA hybridization via electrical means suggest that diamond may be an ideal substrate for continuously-monitoring biological sensors.

Surface Chemical Effects on the Optical Properties of Thin Nanocrystalline Diamond Films

1996 ◽  
Vol 423 ◽  
Author(s):  
A. V. Khomich ◽  
V. I. Polyakov ◽  
P. I. Perov ◽  
V. P. Varnin ◽  
I. G. Teremetskaya ◽  
...  
Keyword(s):  
Optical Properties ◽  
Optical Transmission ◽  
Diamond Films ◽  
Nanocrystalline Diamond ◽  
Surface Chemical ◽  
Chemical Effects ◽  
Nanocrystalline Diamond Films ◽  
Hot Filament Cvd ◽  
Hot Filament ◽  
Highly Porous

AbstractThe effect of annealing in air on internal structure and optical properties of hot filament CVD nanocrystalline diamond films was investigated. Oxidation of the films lead to selective removal of intercrystallite layers with formation of highly porous structure with characteristic dimensions of several nanometers. Dramatic changes in optical transmission and Raman spectra were also observed. The origin of the two Raman spectrum maxima at 1140 and 500 cm−1 is discussed. Hydrogen absorption and desorption processes in porous diamond were studied.

scholarly journals The Effect of pH on Electro-Oxidation of Phenolic Compounds at Boron-Doped Nanocrystalline Diamond Films (BDND)

2019 ◽  
Vol 43 (1) ◽  
pp. 151-157
Author(s):  
Marta Santos ◽  
Adriana F. Azevedo ◽  
Fernando A. Souza ◽  
Mauricio R. Baldan ◽  
Neidenei G. Ferreira
Keyword(s):  
Phenolic Compounds ◽  
Diamond Films ◽  
Nanocrystalline Diamond ◽  
Effect Of Ph ◽  
Boron Doped ◽  
Nanocrystalline Diamond Films ◽  
Electro Oxidation

scholarly journals Studies on optical transmittance of boron-doped nanocrystalline diamond films

2018 ◽  
Vol 10 (3) ◽  
pp. 88 ◽  
Author(s):  
Aleksandra Wieloszynska ◽  
Robert Bogdanowicz
Keyword(s):  
Electrical Properties ◽  
Silica Glass ◽  
Diamond Films ◽  
Fused Silica ◽  
Nanocrystalline Diamond ◽  
Optical And Electrical Properties ◽  
Boron Doped Diamond ◽  
Boron Doped ◽  
Nanocrystalline Diamond Films ◽  
Fused Silica Glass

Thickness is one of the most important parameters in many applications using thin layers. This article describes determination of the thickness of boron-doped nanocrystalline diamond (NCD) grown on fused silica glass. The spectroscopic measurement system has been used. A high refractive index (2.3 @ 550 nm) was achieved for NCD films. The thickness of the NCD samples has been determined from transmission spectrum. Full Text: PDF ReferencesZ. Li, S. Butun, K. Aydin, 'Large-area, lithography-free super absorbers and color filters at visible frequencies using ultrathin metallic films', ACS Photonics, vol. 2.2, pp. 183-188 2015. CrossRef L. Yu, D.D. Tune, C.J. Shearer, J.G. Shapter, 'Implementation of antireflection layers for improved efficiency of carbon nanotube–silicon heterojunction solar cells', Solar Energy, vol. 118, pp. 592-599, 2015. CrossRef D. Majchrowicz, Daria, et al., Nitrogen-Doped Diamond Film for Optical Investigation of Hemoglobin Concentration, Materials, vol. 11.1, pp. 109, 2018. CrossRef K.L. Konnerth, F.H. Dill, 'In-situ measurement of dielectric thickness during etching or developing processes', IEEE Transactions on Electron Devices, vol. 22.7, pp. 452-456, 1975. CrossRef Z.G. Hu, P. Prunici, P. Hess, K.H. Chen, 'Optical properties of nanocrystalline diamond films from mid-infrared to ultraviolet using reflectometry and ellipsometry', Journal of Materials Science: Materials in Electronics, vol. 18.1, pp. 37-41, 2007. CrossRef J. Adamczewska, et al., 'Procesy technologiczne w elektronice półprzewodnikowej', WNT, Warsaw, 1980.J.P. Dilger, L. R. Fisher, D. A. Haydon, 'A critical comparison of electrical and optical methods for bilayer thickness determination', Chemistry and Physics of Lipids, vol. 30.2-3, pp. 159-176, 1982. CrossRef M, Ficek, et al, 'Optical and electrical properties of boron doped diamond thin conductive films deposited on fused silica glass substrates', Applied Surface Science, vol. 387, pp. 846-856, 2016. CrossRef R. Bogdanowicz, et al, 'Opto-Electrochemical Sensing Device Based on Long-Period Grating Coated with Boron-Doped Diamond Thin Film', J. Opt. Soc. Korea, vol. 19, pp. 705-710, 2015. CrossRef M. Sobaszek, et al., 'Optical and electrical properties of ultrathin transparent nanocrystalline boron-doped diamond electrodes', Optical Materials, vol.42, pp. 24-34, 2015. CrossRef R. Bogdanowicz, et al, 'Improved surface coverage of an optical fibre with nanocrystalline diamond by the application of dip-coating seeding', Diamond and Related Materials, vol. 55, pp. 52-63, 2015. CrossRef Z.G. Hu, P. Hess, 'Optical constants and thermo-optic coefficients of nanocrystalline diamond films at 30–500oC', Applied physics letters, vol. 89.8: 081906, 2006. CrossRef

Effect of Gas Pressure on Optical Properties of Nanocrystalline Diamond Films Deposited on SiC Substrates

2011 ◽  
Vol 347-353 ◽  
pp. 537-541
Author(s):  
Nan Chun Wu ◽  
Yi Ben Xia ◽  
Shou Hong Tan ◽  
Lin Jun Wang
Keyword(s):  
Optical Properties ◽  
Raman Scattering ◽  
Diamond Films ◽  
Chemical Vapor ◽  
Gas Pressure ◽  
Nanocrystalline Diamond ◽  
Nanocrystalline Diamond Films ◽  
Scattering Spectra ◽  
Raman Scattering Spectra ◽  
G Ratio

With use of electron-assisted chemical vapor deposition technology, nanocrystalline diamond films were deposited on SiC ceramics substrates at various gas pressure ( 0.5 ~ 2 kPa ). Effect of the gas pressure on optical properties of the nanocrystalline diamond films was studied. Raman scattering spectra were measured. Photoluminescence spectra were investigated in the range of 420 ~ 680 nm. Spectroscopic ellipsometry were analyzed from the near IR to the UV region ( 1.5 ~ 5.0 eV ). Results show that, when the gas pressure increased from 0.5 to 2 kPa, Raman scattering intensity of diamond increase and D/G ratio decrease; when the gas pressure was 0.5kPa and 2kPa, there is not any PL peak, however, there is a stronger PL peak at 485 nm when the gas pressure was 1kPa; extinctive coefficient k for the nanocrystalline diamond films deposited at 1kPa increase obviously with increase of photo energy.

The Microstructure and Enhanced Field Electron Emission Properties of Boron-Doped Nanocrystalline Diamond Films by Microwave Plasma Chemical Vapor Deposition

2010 ◽  
Vol 152-153 ◽  
pp. 413-417
Author(s):  
You Sheng Zou ◽  
Zheng Xue Li ◽  
Hao Yang
Keyword(s):  
Electron Emission ◽  
Microwave Plasma ◽  
Diamond Films ◽  
Field Electron Emission ◽  
Nanocrystalline Diamond ◽  
Gas Mixture ◽  
Emission Properties ◽  
Boron Doped ◽  
Field Electron ◽  
Nanocrystalline Diamond Films

The boron-doped nanocrystalline diamond films were prepared on Si(100) substrates by microwave plasma chemical vapor deposition in gas mixture of CH4/H2/trimethylboron (TMB) with B/C ratio in the range of 0-1900ppm. The dependencies of surface morphology, microstructure, phase composition and field electron emission properties on the B/C ratio were systematically investigated by scanning electron microscope, X-ray diffractometer, visible and UV Raman spectroscopy. The results show that the diamond grains gather together forming ball-like clusters with inhomogeneous size, the doped boron atoms can promote the growth of plane (111) surface and terminate the diamond growth sites, resulting in the reduction of growth rate with the increase of B/C ratio in the gas mixture. The two peaks located at approximately 500 and 1220cm-1 resulted from Fano interference were observed in the visible Raman spectra for the heavily boron-doped nanocrystalline diamond film, and the sp2/sp3 ratio of carbon bonds increased with B/C ratio increasing in gas mixture. The field electron emission performances of the boron-doped nanocrystalline diamond films were obviously dependent on B/C ratio in the gas mixture, and boron doping can improve their field electron emission properties remarkably. The low turn-on electric field of 7.6V/μm was achieved for the boron-doped nanocrystalline diamond film deposited at B/C ratio of 1900ppm.

Transmission of low-energy electrons in boron-doped nanocrystalline diamond films

2003 ◽  
Vol 93 (5) ◽  
pp. 3082-3089 ◽  
Author(s):  
J. E. Yater ◽  
A. Shih ◽  
J. E. Butler ◽  
P. E. Pehrsson
Keyword(s):  
Diamond Films ◽  
Nanocrystalline Diamond ◽  
Low Energy ◽  
Boron Doped ◽  
Nanocrystalline Diamond Films ◽  
Low Energy Electrons
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