Growth of Vertical GaAs Nanowires on an Amorphous Substrate via a Fiber-Textured Si Platform

Cohin, Yann; Mauguin, O.; Largeau, L.; Patriarche, G.; Glas, Frank; Sondergard, E.; Harmand, J. C.

doi:10.1021/nl400924c

Cited by 32 publications

(25 citation statements)

References 26 publications

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“…The cation exchange reaction is driven by a large excess of the incoming cation and/or the preferential solvation of the outgo- [37]. These authors used a gold particle as a catalyst to grow a semiconducting nanowire using the appropriate gaseous reactant, Figure 1a While CVD is a clean method well suited to the growth of semiconductor core/shell materials [37,39], different methods have to be developed for other systems such as metals. Habas et al have shown that metal nanocrystals can be used as seeds for growing a metal crystalline shell [40].…”

Section: Cation Exchangementioning

confidence: 99%

Engineered inorganic core/shell nanoparticles

et al. 2014

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It has been for a long time recognized that nanoparticles are of great scientific interest as they are effectively a bridge between bulk materials and atomic structures. At first, size effects occurring in single elements have been studied. More recently, progress in chemical and physical synthesis routes permitted the preparation of more complex structures. Such structures take advantages of new adjustable parameters including stoichiometry, chemical ordering, shape and segregation opening new fields with tailored materials for biology, mechanics, optics magnetism, chemistry catalysis, solar cells and microelectronics. Among them, core/shell structures are a particular class of nanoparticles made with an inorganic core and one or several inorganic shell layer(s). In earlier work, the shell was merely used as a protective coating for the core. More recently, it has been shown that it is possible to tune the physical properties in a larger range than that of each material taken separately. The goal of the present review is to discuss the basic properties of the different types of core/shell nanoparticles including a large variety of heterostructures. We restrict ourselves on all inorganic (on inorganic/inorganic) core/shell structures. In the light of recent developments, the applications of inorganic core/shell particles are found in many fields including biology, chemistry, physics and engineering. In addition to a representative overview 2 of the properties, general concepts based on solid state physics are considered for material selection and for identifying criteria linking the core/shell structure and its resulting properties. Chemical and physical routes for the synthesis and specific methods for the study of core/shell nanoparticle are briefly discussed.

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Section: Cation Exchangementioning

confidence: 99%

Engineered inorganic core/shell nanoparticles

et al. 2014

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“…[1][2][3] Besides, orientationcontrolled poly-Si layers are essential for fabricating antireflective structures, controlled nanostructures, and tandem structures with advanced materials. [4][5][6] Al-induced crystallization (AIC) has gained much attention as a way to form poly-Si on glass below the softening temperature of glass (550 C). In this technique, an amorphous Si (a-Si) layer on Al is crystallized by exchanges between the Al and Si layers during annealing (425-500 C).…”

Section: Introductionmentioning

confidence: 99%

Selective formation of large-grained, (100)- or (111)-oriented Si on glass by Al-induced layer exchange

Toko

Numata

Saitoh³

et al. 2014

Journal of Applied Physics

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By controlling the Si thickness and the annealing temperature used for Al-induced crystallization, we controlled the fraction of (100) and (111) orientations of polycrystalline Si (poly-Si) grains grown on glass. Changing the proportions of crystal orientation strongly influenced the average grain size of the poly-Si layer. By growing a 99% (111)-oriented poly-Si layer, formed with a 50-nm-thick Si layer at 375 C, we produced a Si layer with grains nearly 40 lm in size. We discuss the growth mechanism from the perspective of competition between (100)-and (111)-oriented nuclei. This achievement holds promise for fabricating high-efficiency thin-film solar cells on inexpensive glass substrates. V C 2014 AIP Publishing LLC. [http://dx.

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“…NW solar cells on cheap substrates: Unlike thin-film structures, NW growth has much wider choices in the substrate selection, which benefits from its good strain accommodation ability mentioned above. The integration between large lattice mis-matched material systems have been reported, such as InP/Si (8.1%) and InAs/Si (11.6%) [174][175][176][177][178]. Besides the single crystalline and polycrystalline substrates, the NWs can also be grown on graphene, carbon nanotube, fibre-textured silicon thin film, amorphous Si, glass, and indium tin oxide [179][180][181][182][183][184].…”

Section: Design For Novel High-efficiency and Low-cost Solar Cellsmentioning

confidence: 99%

Nanowires for High-Efficiency, Low-Cost Solar Photovoltaics

Zhang

Liu

2019

Crystals

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Solar energy is abundant, clean, and renewable, making it an ideal energy source. Solar cells are a good option to harvest this energy. However, it is difficult to balance the cost and efficiency of traditional thin-film solar cells, whereas nanowires (NW) are far superior in making high-efficiency low-cost solar cells. Therefore, the NW solar cell has attracted great attention in recent years and is developing rapidly. Here, we review the great advantages, recent breakthroughs, novel designs, and remaining challenges of NW solar cells. Special attention is given to (but not limited to) the popular semiconductor NWs for solar cells, in particular, Si, GaAs(P), and InP.

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Growth of Vertical GaAs Nanowires on an Amorphous Substrate via a Fiber-Textured Si Platform

Cited by 32 publications

References 26 publications

Engineered inorganic core/shell nanoparticles

Engineered inorganic core/shell nanoparticles

Selective formation of large-grained, (100)- or (111)-oriented Si on glass by Al-induced layer exchange

Nanowires for High-Efficiency, Low-Cost Solar Photovoltaics

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