Color-sensitive photodetector based on porous silicon superlattices

Krüger, Michael; Marso, Michel; Berger, M.; Thönissen, M.; Billat, S.; Loo, Roger; Reetz, W.; Lüth, H.; Hilbrich, S.; Arens-Fischer, R.; Große, Peter

doi:10.1016/s0040-6090(96)09414-x

Cited by 32 publications

(17 citation statements)

References 8 publications

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“…Porous silicon also can be used as anti-reflecting coating for p-n photocells because of its reduced reflectivity of incident light from its surface. As suggested by Krueger et al (Krueger et al 1997) multilayer PS structures could be used as selectively absorptive filters to modify the spectral sensitivity of photo detectors.…”

Section: Photodetectorsmentioning

confidence: 99%

Nanocrystalline Porous Silicon

Basu¹,

Kanungo²

2011

Crystalline Silicon - Properties and Uses

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Section: Photodetectorsmentioning

confidence: 99%

Nanocrystalline Porous Silicon

Basu¹,

Kanungo²

2011

Crystalline Silicon - Properties and Uses

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“…[1][2][3][4] Potential applications include dye-sensitized solar cells, [5][6][7] low-k dielectric materials, 8,9 biosensors, [10][11][12] and optical devices including waveguides, [13][14][15] Bragg reflectors and Fabry-Perot filters. [16][17][18][19][20][21][22] For example, in order to confine and propagate electromagnetic waves within a waveguide, the guide region itself must have a higher index of refraction than the surrounding cladding. 23 On the other hand, Bragg reflectors and Fabry-Perot filters are built by generating alternating layers with prescribed thickness and index of refraction.…”

Section: Introductionmentioning

confidence: 99%

Effective optical properties of absorbing nanoporous and nanocomposite thin films

Garahan

Pilon

Yin

et al. 2007

Journal of Applied Physics

117

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This paper aims at developing numerically validated models for predicting the through-plane effective index of refraction and absorption index of nanocomposite thin films. First, models for the effective optical properties of such materials are derived from previously reported analysis applying the volume averaging theory (VAT) to Maxwell’s equations. The transmittance and reflectance of nanoporous thin films are computed by solving Maxwell’s equations and the associated boundary conditions at all interfaces using finite element methods. The effective optical properties of the films are retrieved by minimizing the root mean square of the relative errors between the computed and theoretical transmittance and reflectance. Nanoporous thin films made of SiO2 and TiO2 consisting of cylindrical nanopores and nanowires are investigated for different diameters and various porosities. Similarly, electromagnetic wave transport through dielectric medium with embedded metallic nanowires are simulated. The numerical results are compared with predictions from widely used effective property models including (1) the Maxwell-Garnett theory, (2) the Bruggeman effective medium approximation, (3) the parallel, (4) series, (5) Lorentz-Lorenz, and (6) the VAT models. Very good agreement is found with the VAT model for both the effective index of refraction and absorption index. Finally, the effect of volume fraction on the effective index of refraction and absorption index predicted by the VAT model is discussed. For certain values of wavelengths and volume fractions, the effective index of refraction or absorption index of the composite material can be smaller than that of both the continuous and dispersed phases. These results indicate guidelines for designing nanocomposite materials with desired optical properties.

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“…Color-sensitive photodetectors have been fabricated [119][120][121]. The color sensitivity was achieved by using PSi Fabry-Perot filters on top of a p þ -n Si photodiode.…”

Section: Sensing Based On Change Of Conductivitymentioning

confidence: 99%

Silicon Nanocrystals in Porous Silicon and Applications

Gelloz

2010

Silicon Nanocrystals

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Color-sensitive photodetector based on porous silicon superlattices

Cited by 32 publications

References 8 publications

Nanocrystalline Porous Silicon

Nanocrystalline Porous Silicon

Effective optical properties of absorbing nanoporous and nanocomposite thin films

Silicon Nanocrystals in Porous Silicon and Applications

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