Self-assembling of metal nanoparticles on patterned semiconductor surfaces (Au/GaAs)

Barlas, T. R.; Dmitruk, N. L.; Kotova, N.V.; Mayeva, O.I.; Romanyuk, V. R.

doi:10.1016/j.spmi.2005.04.003

Cited by 10 publications

(10 citation statements)

References 22 publications

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“…The classical approach for the fabrication of metallic structures with nanovoids is based upon a mechanical block of surface in the colloidal lithography method [7]. The most popular techniques to obtain island-like structures formed upon continuous film are based on thermal sputtering [1], various lithographic techniques [13][14][15], photo-stimulated chemical deposition [16]. There are also various approaches that involve chemical binding between nanoparticles and functionalized surfaces [17], in particular those that use microwave radiation [18].…”

Section: Introductionmentioning

confidence: 99%

Building Interfacial Nanostructures by Size-Controlled Chemical Etching

2010

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Development of soft chemical processes for the synthesis of interfacial architectures with well-defined structural nano-motifs organized over large areas in two dimensions is an important branch of nanotechnology. The present study deals with the fabrication of gold nanostructures using size-selective chemical etching of continuous gold films on glass support with titanium and chromium adhesive layers. In this process, which is called self-passivated surface etching, a gold film is etched in the presence of citric acid, resulting in gold nanostructures adhering to the metal support. The size-controlled chemical dissolution of gold is driven by a competing reaction between self-organized passivation of surface nano-motifs by citric acid shells and soft etching by a nonoxidative composition containing hydrochloric acid and hydrogen peroxide in water. According to these results, the presence of a chemically stable adhesive layer (titanium), citric acid in solution, and agitation are critical factors to be considered. However, the nature of the adhesive layer is the most influential factor. The following technique presents a simple method for the rapid fabrication of a nanostructured gold substrate that has the ability to support both propagating and localized surface plasmon resonances simultaneously.

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Section: Introductionmentioning

confidence: 99%

Building Interfacial Nanostructures by Size-Controlled Chemical Etching

2010

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“…These peculiarities of microrelief are seen in the presented examples of section analysis (Figure 1 b,d), and their parameters can be determined by averaging Fourier transformations of AFM data for all cross-sections of AFM image. Three methods of metal nanoparticles deposition were used: 1) photoinduced chemical deposition of Au from aqueous salt AuCl 3 solution forming nanoparticles of various shape and size located predominantly at the tops of microrelief and, in particular, in the shape of nanowires on the ridges of quasigrating-type surface microrelief [ 4 ], 2) deposition of ca. 100 nm Ag NP from colloidal water suspension on poly(vinylpyridine) (PVP) modified the GaAs substrate (for immobilization of NP) with formation of separated NP and aggregates of NP on dielectric PVP interlayer [ 9 ], and 3) drop-coating deposition from aqua colloid solution of Au NP of 15 nm core size covered by silica shell with approximately 20-nm thickness [ 10 ].…”

Section: Methodsmentioning

confidence: 99%

“…Deposition of the noble metal (Au, Ag) nanoparticles on the semiconductor surface (interface) is known [ 1 ] as a perspective method for increasing the light absorption in semiconductor due to excitation of surface plasmons (SP) in nanoparticles (NP) or surface plasmon polaritons (SPP) in their periodical arrays and nanowires [ 2 ]. The spectral range of resonance modes excitation depends on the size and shape of particles, their local environment, and arrangement, which in turn are determined by the method of deposition, the substrate refractive index [ 3 ], and surface microrelief [ 4 ]. At the same time, texturing the front surface or interface of solar cell (SC) is considered as one of the effective methods to diminish optical losses and to enhance the transmittance of light into semiconductor and the solar cell efficiency [ 5 - 8 ].…”

Section: Introductionmentioning

confidence: 99%

Metal nanoparticle-enhanced photocurrent in GaAs photovoltaic structures with microtextured interfaces

et al. 2015

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The photocurrent enhancement effect caused by Au and Ag nanoparticles for GaAs-based photovoltaic structures of surface barrier or p-n junction type with microtextured interfaces has been investigated in dependence on the conditions of nanoparticles deposition and, respectively, on the shape and local dielectric environment of obtained nanoparticle arrays. Three nanoparticle deposition methods have been checked: 1) photoinduced chemical deposition of Au from aqueous AuCl3 solution forming nanowires on the ridges of quasigrating-type surface microrelief, 2) deposition of Ag nanoparticles from colloidal suspension on the GaAs substrate covered with poly(vinylpyridine), and 3) drop and dry deposition of Au/SiO2 core-shell nanoparticles from aqueous colloid solution. The comprehensive investigation of optical reflectance, photoelectric, and electrical characteristics of the fabricated barrier structures has shown the highest photovoltaic parameters for surface microrelief of quasigrating-type and electroless Au nanoparticle deposition. The analysis of characteristics obtained allowed us also to define the mechanisms of the total photocurrent enhancement.

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“…The spectral range of resonance modes excitation depends on the size and shape of particles, their local environment, and arrangement, which in turn are determined by the method of deposition, the substrate refractive index [3], and surface microrelief [4]. At the same time, texturing the front surface or interface of solar cell (SC) is considered as one of the effective methods to diminish optical losses and to enhance the transmittance of light into semiconductor and the solar cell efficiency [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Metal nanoparticle-enhanced photocurrent in GaAs photovoltaic structures with microtextured interfaces

Dmitruk¹,

Borkovskaya²,

Mamontova³

et al. 2016

Nano Online

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The photocurrent enhancement effect caused by Au and Ag nanoparticles for GaAs-based photovoltaic structures of surface barrier or p-n junction type with microtextured interfaces has been investigated in dependence on the conditions of nanoparticles deposition and, respectively, on the shape and local dielectric environment of obtained nanoparticle arrays. Three nanoparticle deposition methods have been checked: 1) photoinduced chemical deposition of Au from aqueous AuCl 3 solution forming nanowires on the ridges of quasigrating-type surface microrelief, 2) deposition of Ag nanoparticles from colloidal suspension on the GaAs substrate covered with poly(vinylpyridine), and 3) drop and dry deposition of Au/SiO 2 core-shell nanoparticles from aqueous colloid solution. The comprehensive investigation of optical reflectance, photoelectric, and electrical characteristics of the fabricated barrier structures has shown the highest photovoltaic parameters for surface microrelief of quasigrating-type and electroless Au nanoparticle deposition. The analysis of characteristics obtained allowed us also to define the mechanisms of the total photocurrent enhancement.

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Self-assembling of metal nanoparticles on patterned semiconductor surfaces (Au/GaAs)

Cited by 10 publications

References 22 publications

Building Interfacial Nanostructures by Size-Controlled Chemical Etching

Building Interfacial Nanostructures by Size-Controlled Chemical Etching

Metal nanoparticle-enhanced photocurrent in GaAs photovoltaic structures with microtextured interfaces

Metal nanoparticle-enhanced photocurrent in GaAs photovoltaic structures with microtextured interfaces

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