Novel template-based semiconductor nanostructures and their applications

Das, Biswajit; McGinnis, Sean

doi:10.1007/s003390000450

Cited by 46 publications

(38 citation statements)

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“…[ 16 ] Recently, semiconductor nanostructure arrays have shown to be of great scientifi c and technical interest since they have the strong non-linear and electro-optic effects that occur due to carrier confi nement in three dimensions. [17][18][19][20] Considerable efforts have been made with respect to the growth of various semiconductor nanostructure arrays via chemical or physical routes in a controlled way. To date, well-aligned nanostructure arrays have been obtained for the group IV (Si and Ge), groups III-V (GaP, GaAs, and InP), and groups II-VI (ZnO, ZnS, CdS, ZnSe) even ternary compound semiconductors.…”

Section: Introductionmentioning

confidence: 99%

ZnS Nanostructure Arrays: A Developing Material Star

2010

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Semiconductor nanostructure arrays are of great scientific and technical interest because of the strong non-linear and electro-optic effects that occur due to carrier confinement in three dimensions. The use of such nanostructure arrays with tailored geometry, array density, and length-diameter-ratio as building blocks are expected to play a crucial role in future nanoscale devices. With the unique properties of a direct wide-bandgap semiconductor, such as the presence of polar surfaces, excellent transport properties, good thermal stability, and high electronic mobility, ZnS nanostructure arrays has been a developing material star. The research on ZnS nanostructure arrays has seen remarkable progress over the last five years due to the unique properties and important potential applications of nanostructure arrays, which are summarized here. Firstly, a survey of various methods to the synthesis of ZnS nanostructure arrays will be introduced. Next recent efforts on exploiting the unique properties and applications of ZnS nanostructure arrays are discussed. Potential future directions of this research field are also highlighted.

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Section: Introductionmentioning

confidence: 99%

ZnS Nanostructure Arrays: A Developing Material Star

2010

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“…The quantum wire fabrication technique that is at the foundation of the IR photodetectors is based on the use of anodized alumina templates, which use natural self-organization for the creation of periodic arrays of nanoscale structures [27][28][29]. The underlying principle is that when aluminum is anodized in a suitable acidic electrolyte under controlled conditions, it oxidizes to form a hydrated aluminum oxide (alumina) containing a two dimensional hexagonal array of cylindrical pores as shown in Fig.…”

Section: The Fabrication Techniquementioning

confidence: 99%

“…Therefore, direct fabrication of the template on the desired substrate is preferred, and thin film alumina templates are of particular importance for device applications. In addition, thin film templates formed on silicon substrates are of particular interest due to their potential for nanostructure integration on silicon [27].…”

Section: The Fabrication Techniquementioning

confidence: 99%

“…Due to the excellent periodicity of the pores, and the ability to control the pore diameters, such anodized alumina films can be used as templates for the fabrication of periodic arrays of nanostructures. The pores in alumina templates can be used to synthesize a variety of metal and semiconductor nanostructures [27]. In addition, the template can be used as a mask for pattern transfer to create periodic arrays of pores on a substrate.…”

Section: The Fabrication Techniquementioning

confidence: 99%

“…The underlying principle is that when aluminum is anodized in a suitable acidic electrolyte under controlled conditions, it oxidizes to form a hydrated aluminum oxide (alumina) containing a two dimensional hexagonal array of cylindrical pores as shown in Fig. 8 [27]. The pore diameter can be varied between 4 nm and 100 s of nm and the pores can be several microns deep [30][31][32][33].…”

Section: The Fabrication Techniquementioning

confidence: 99%

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Synthesis and Characterization of Graphene

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Graphene is an important nanoscale material with unique electronic and optical properties. Due to its many potential applications, grapheme was the subject of a Nobel Prize in physics 2010; Andre Geim and Kostya Novoselov of Manchester University received the Nobel Prize for demonstrating the ability to create single atom thick graphene layers from bulk graphite. Since then, many alternative synthesis techniques and device applications of graphene have been explored. An important and unique property of graphene is its excellent thermal properties.Graphene has a two dimensional structure and the thermal properties are significantly different than three dimensional bulk materials. Using graphene by itself or as a composite for thermal management presents new opportunities for its impact on numerous applications including green technologies for power generation. . Due to the strength of its 0.142 Nm-long carbon bonds, graphene is the strongest material ever discovered, with an ultimate tensile strength of 130,000,000,000 Pascals (or 130 gigapascals), compared to 400,000,000 for A36 structural steel. Not only is graphene extraordinarily strong, it is also very light at 0.77milligrams per square meter (for comparison purposes, 1 square meter of paper is roughly 1000 times heavier). It is often said that a single sheet of graphene (being only 1 atom thick), sufficient in size enough to cover a whole football field, would weigh under 1 single gram. These values are theoretical values. To test these values requires flawless graphene which currently is very hard to be commercially produced. (Graphanea, n.d.) Optical properties Graphene's ability to absorb a rather large 2.3% of white light is also a unique and interesting property, especially considering that it is only 1 atom thick. This is due to its aforementioned electronic properties; the electrons acting like massless charge carriers with very high mobility.( Graphanea, n.d.

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Novel template-based semiconductor nanostructures and their applications

Cited by 46 publications

References 0 publications

ZnS Nanostructure Arrays: A Developing Material Star

ZnS Nanostructure Arrays: A Developing Material Star

Novel quantum wire infrared photodetectors

Synthesis and Characterization of Graphene

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