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Porous silicon aging

Korotcenkov, Handbook of Gas Sensor Materials, Integrated Analytical Systems, [Pg.311]

Ambient air (15 min-15 months) Contaminated native oxide growth [Pg.312]

ethanol. Freon, ether Lowest carbon levels for HE storage [Pg.312]

Transport under propanol ( 1 day) Minimize oxidation by reducing air exposure [Pg.312]

Ethanol storage and removal in UHV ( 2 x 10 Torr) Minimize oxidation by completely avoiding air exposure [Pg.312]

Torchinskaya TV, Korsunskaya NE, Khomenkova LYu, Shenkman MK, Batan NP, Misiuk A, Surma B (1997) Complex studies of porous silicon aging phenomena. In Proceeding of international semiconductor conference, IEEE, Sinaia, Romania, pp 173-176... [Pg.321]

Crease, R.P. Biomedicine in tile Age of Imaging, Science, 554 (July 30, 1993). Doan, V.V. and M.J. Sailor Luminescent Color Image Generation on Porous Silicon, Science. 1791 (June 26, 1992). [Pg.1294]

An influence of a weak magnetic field on the evolution of porous silicon surface species during ageing in air and porous silicon photoluminescence is studied. Magnetic field retards the process of Si surface oxidation and stimulates a breakage of Si-H bonds at the porous silicon surface. It also affects bond energy in silicon complexes witti water molecules. [Pg.299]

Figure 1. Effect of magnetic field on the modification of chemical composition of porous silicon during its ageing in air. Figure 1. Effect of magnetic field on the modification of chemical composition of porous silicon during its ageing in air.
Y. Fukuda, W. Zhou, K. Furuya, and H. Suzuki, Photoluminescence change of as-prepared and aged porous silicon with NaOH treatment, J. Electrochem. Soc. 146, 2697, 1999. [Pg.469]

V. P. Parkhutik, E. S. Matveeva, and R. Diaz Calleja, Impedance study of aging porous silicon films, Electrochim. Acta 41(7/8), 1313, 1996. [Pg.476]

Noval AM, Vaquero VS, Quijoma EP, Costa VT, Perez DG, Mendez LG, Montero I, Palma RJM, Font AC, Ruiz JPG, Silvan MM (2012) Aging of porous silieon in physiologieal conditions cell adhesion modes on scaled Id micropattems. J Biomed Mater Res A 100A(6) 1615-1622 Park JH, Gu L, von Maltzahn G, Ruoslahti E, Bhatia SN, Sailor MJ (2009) Biodegradable luminescent porous silicon nanoparticles for in vivo applications. Nat Mater 8(4) 331-336 Pavesi L, Dubos P (1997) Random porous silicon multilayers application to distributed Bragg reflectors and interferential fabry - perot filters. Semicond Sci Technol 12(5) 570... [Pg.11]

Oxidized by aging in aqueous medium Rat mesenchymal stem cells (rMSC) Porous silicon patterned stripes were aged in PBS to form Si-OH sur ce. rMSC preferentially attach to flat Si, but straddled 20 pm wide porous silicon stripes with focal adhesion sites on the flat silicon, while nuclei remained over porous area Noval etal. (2012)... [Pg.26]

Fig. 1 Comparison of the magnetization curves of bare n silicon (full line), as-etched porous silicon prepared from the same wafer (dotted line), and aged porous silicon offering a native oxide layer (dashed line). All three samples show a diamagnetic behavior, whereas the estimated susceptibility varies between —1.2 10 (Si), —7.5 10 (as-etched), and —2.6 10 (aged). The measurements have been performed at T = 4.2 K. The diamagnetic behavior of porous silicon decreases if the sample is oxidized (in contrast to hydrogen terminated) which might be caused by the occurrence of dangling bonds... Fig. 1 Comparison of the magnetization curves of bare n silicon (full line), as-etched porous silicon prepared from the same wafer (dotted line), and aged porous silicon offering a native oxide layer (dashed line). All three samples show a diamagnetic behavior, whereas the estimated susceptibility varies between —1.2 10 (Si), —7.5 10 (as-etched), and —2.6 10 (aged). The measurements have been performed at T = 4.2 K. The diamagnetic behavior of porous silicon decreases if the sample is oxidized (in contrast to hydrogen terminated) which might be caused by the occurrence of dangling bonds...
Gardelis S, Bangert U, Hamilton B, Pettifer RF, Hill DA, Keyse R, Teehan D (1996) Chemical nature of the luminescent centre in fresh and aged porous silicon layers. Appl Surf Sci 102 408 12... [Pg.139]

Martin-Palma RJ, Perez-Rigueiro J, Guerrero-Lemus R, Moreno JD, Martinez-Duart J (1999) Aging of aluminum electrical contacts to porous silicon. J Appl Phys 85 583 Martin-Palma RJ, Martinez-Duart JM, Li L, Levy RA (2002) Electrical behavior of double-sided metal/porous silicon structures for optoelectronic devices. Mater Sci Eng C 19 359 Mathur RG, Vivechana, Mehra RM, Mathur PC, Jain VK (1998) Jain, Electron transport in porous silicon. Thin Solid Films 312 254... [Pg.156]

Silieon dioxide functional coatings are obtained by deposition of additional Si02 material on the porous silicon substrates. SiUcon dioxide layers obtainable by direct controlled oxidation of the porous siUcon films (by chemical, thermal, ozone, or aging treatments) are not reviewed in this chapter. Thermal oxidation is reviewed elsewhere in handbook (Chaps. 58, and 59)... [Pg.206]

Rahmoun K et al (2009) A multilayer model for describing hardness variations of aged porous silicon low-dielectric constant thin films. Thin Solid Films 518 213-221 Rice RW (ed) (1998) Porosity of ceramics. Marcel Dekker, New York... [Pg.298]

Karacali T, Cakmak B, Efeoglu H (2003) Aging of porous silicon and the origin of blue shift. Opt Express 11 1237-1242... [Pg.367]

Porous silicon particles could be utilized in a variety of consumer care applications if their cost of manufacture becomes low enough. Silica and porous silica are already widely used by the toothpaste and cosmetic industries, and porous silicon offers superior mechanical properties for teeth cleaning and very different optical properties for cosmetics. Partial thermal oxidation has been used to improve shelf life in liquid formulations and to match brown skin tones. Preliminary mouthfeel testing for oral hygiene products has been carried out, but formalized skin-feel testing and optimization is required for numerous dermatological products. Product examples discussed include multifunctional dentifrice abrasives, sunscreens, bronzers, foundation and makeup additive, and anti-aging formulations. [Pg.544]

Mulloni V, Mazzoleni C, Pavesi L (1999) Elaboration, characterization and aging effects of porous silicon microcavities formed on lightly //-type doped substrates. Semicond Sci Technol 14 1052 Murzina TV, Fedor Yu Sychev, Kolmychek I A, Aktsipetrov OA (2007) Tunable ferroelectric photonic ciystals based on porous silicon templates infiltrated by sodium nitrite. Appl Phys Lett 90 161120... [Pg.725]

Butturi MA, Carotta MC, Martinellia G, Passaria L, Youssef GM, Chiorino A, Ghiotti G (1997) Effects of ageing on porous silicon photoluminescence correlation with FTIR and UV-vis spectra. Solid State Commun 101 11... [Pg.892]

Pancheri L, Oton CJ, Gaburro Z, Soncini G, Pavesi L (2004) Improved reversibility in aged porous silicon NOj sensors. Sens Actuators B 97 45 8... [Pg.318]

Islam T, Saha H (2006) Modeling of an aged porous silicon humidity sensor using ANN technique. Sens Transducers J 72(10) 731-739... [Pg.405]

Poisoning and thermal aging are the main reason why the lambda characteristic and dynamics of the sensor changes with lifetime [1, 31-33]. Plugging of the porous electrode protective layer by oil, ash, or silicon oxide favors the diffusion of hydrogen to the electrode, which leads to a lean shift in the static characteristic curve [31]. [Pg.497]

See other pages where Porous silicon aging is mentioned: [Pg.109]    [Pg.311]    [Pg.1]    [Pg.109]    [Pg.311]    [Pg.1]    [Pg.358]    [Pg.299]    [Pg.543]    [Pg.34]    [Pg.42]    [Pg.175]    [Pg.211]    [Pg.367]    [Pg.419]    [Pg.423]    [Pg.550]    [Pg.648]    [Pg.656]    [Pg.311]    [Pg.316]    [Pg.380]    [Pg.177]    [Pg.755]    [Pg.286]    [Pg.114]    [Pg.48]    [Pg.379]    [Pg.328]    [Pg.313]    [Pg.135]    [Pg.1254]   
See also in sourсe #XX -- [ Pg.452 ]

See also in sourсe #XX -- [ Pg.311 , Pg.312 , Pg.316 , Pg.317 ]



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