Porous silicon in solar cells: A review and a description of its application as an AR coating

Menna, P.; Francia, G. Di; Ferrara, V. La

doi:10.1016/0927-0248(94)00193-6

Cited by 223 publications

(103 citation statements)

References 33 publications

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“…It shows that the resulting etched surface of the porous silicon consists of irregular and randomly distributed nanocrystalline upright structures. The refractive index of the porous silicon layer was measured to be about 1.9, which agrees with the value previously reported for porous silicon layers [10,16]. It shows that this material can be oxidized much rapidly than the single-crystalline silicon because the lattice constant of the porous silicon network is slightly higher than the crystalline silicon [17].…”

Section: Resultssupporting

confidence: 79%

“…It is found that this material may be an attractive option for the silicon surface micromachining processing that is chemically stable in the HF-based electrolyte but is tolerant to the hightemperature processing step [14]. It also finds application in the area of opto-electronic devices [15], photovoltaic cells [16] and even as a sacrificial layer formation of the siliconon-insulator (SOI) structure in the manufacturing of the integrated circuits [17].…”

Section: Introductionmentioning

confidence: 99%

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Porous silicon and aluminum co-gettering experiment in p-type multicrystalline silicon substrate

Vinod

2007

Science and Technology of Advanced Materials

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The lifetimes of non-equilibrium minority carriers, which bound with the diffusion length, are considered as two important parameters of the low-quality multicrystalline silicon (mc-Si) substrate. Its value defines the quality of the initial substrate. It is also subjected to change as a result of many high-temperature operations during the device fabrication. Therefore, it is necessary to incorporate certain processing steps that either improve or preserve the electronic quality of the mc-Si substrate. In this study, a novel porous silicon and aluminum co-gettering experiment has been applied as a beneficial approach to improve the electronic quality of the low-resistivity mc-Si substrates. Porous silicon layers were prepared by anodization of the n + silicon region by a simple electrochemical etching process using an aqueous HF-based electrolyte, which leads to the creation of porous silicon microcavities. Besides making porous silicon and aluminum co-gettered samples, both phosphorous and aluminum alloy-gettered samples and reference samples were made. The gettering-induced lifetime enhancement in the test samples was monitored by measuring the lifetime/diffusion length of the test samples using two independent methods such as photoconductivity decay (PCD) measurement and the photocurrent generation method (PCM), respectively. The result in both the measurements has shown a reasonably good agreement with each other. Therefore, it is inferred that the applied co-gettering experiment has a synergetic effect to improve the lifetime of the mc-Si substrate. r

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Section: Resultssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Porous silicon and aluminum co-gettering experiment in p-type multicrystalline silicon substrate

Vinod

2007

Science and Technology of Advanced Materials

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“…The tunable porosity of porous silicon (p-Si) and concomitant physical properties such as photoluminescence and electrical conductivity have long been exploited for solar (Menna, 1995;Vitanov, 1997), biomedical (Low, 2009;MacInnes, 2009;Alvarez, 2009), and (bio)sensing (Razi, 2008;Palestino, 2008;Janshoff, 1998) applications. The most common method used to fabricate porous silicon is electrochemical etching (anodization) of a doped Si wafer in an aqueous/ethanolic HF electrolytic solution (Fahlman, 2011).…”

Section: Synthesis Of Porous Siliconmentioning

confidence: 99%

Surface-Functionalized Porous Silicon Wafers: Synthesis and Applications

Bradley¹,

Ramírez‐Porras²

2012

Advances in Chemical Sensors

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“…It is based on analysis of a model involving carrier diusion from the surface and recombination at the surface and in the bulk of the emitter [8]. Further review of previous work can be found in the papers [4,9,10].…”

Section: Introductionmentioning

confidence: 99%

Improved Performance and Spectral Features of Complex Porous Silicon Structure Containing Silicon Solar Cells

et al. 2012

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This work presents porous silicon technology, adapted to improve the characteristics of monocrystalline silicon solar cell. This is achieved by taking advantage of properties provided by porous silicon technology in production of diverse structures in the material. We produce a porous silicon derivative, which is mostly hidden in the emitter of solar cell. Research of the initial and modied solar cells was made by measuring currentvoltage characteristics under illumination of a 5000 K xenon lamp. Spectrally resolved studies of currentvoltage characteristics were carried out using radiation of halogen lamps and diraction grating monochromator. Studies revealed that the manufacturing of buried porous silicon structure improves solar cell performance by increasing the ll factor of the modied solar cell currentvoltage characteristics, maximum output power and eciency, when compared to unmodied ones. Spectral studies revealed that the above-mentioned improvement diers for various sections of light spectrum. Largest relative enhancement of solar cell current was observed at the wavelengths of ∆λ = 450550 nm. We consider the cumulative result of several eects resulting in solar cell eciency enhancement. Most of them were the inuence of porosity on eective optical path length and better anti-reecting properties of multiple porous structures.

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Porous silicon in solar cells: A review and a description of its application as an AR coating

Cited by 223 publications

References 33 publications

Porous silicon and aluminum co-gettering experiment in p-type multicrystalline silicon substrate

Porous silicon and aluminum co-gettering experiment in p-type multicrystalline silicon substrate

Surface-Functionalized Porous Silicon Wafers: Synthesis and Applications

Improved Performance and Spectral Features of Complex Porous Silicon Structure Containing Silicon Solar Cells

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