Synthesis of thin Si whiskers (nanowires) using SiCl4

Zhang, Yingjiu; Zhang, Qi; Wang, Naiyan; Yan, Yuxin; Zhou, Hong; Zhu, Jing

doi:10.1016/s0022-0248(01)01360-4

Cited by 70 publications

(35 citation statements)

References 22 publications

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“…The nanowire diameter has been shown to depend on the size of the catalyst droplet [17] as well as reaction parameters such as temperature and precursor pressure [18,19]. Crystalline nanowires of a variety of relevant semiconductors such as Si, Ge, GaAs, CdS and CdSe with diameters down to a few nanometres and lengths greater than 75 μm have been produced [16][17][18][19][20][21][22][23][24][25][26][27]. Figure 5 (a) displays a disordered array of Si NWs formed by VLS growth on a silicon substrate [26].…”

Section: Vapor-liquid-solid Techniquesmentioning

confidence: 99%

Nanostructured Inorganic Solar Cells

Musselman¹,

Schmidt‐Mende²

2011

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Abstract. Recent progress in the development of nanostructured inorganic solar cells is reviewed. Nanostructuring of inorganic solar cells offers the possibility of reducing the cost of photovoltaics by allowing smaller amounts of lowergrade photovoltaic semiconductors to be used. Various fabrication methods used to nanostructure traditional photovoltaic semiconductors are detailed and the performance of resulting devices is discussed. The synthesis of solar cells by solution-based methods using less traditional, abundant materials is identified as a promising route to widescale photovoltaic electricity generation, and nanostructured solar cell geometries are highlighted as essential in this approach. Templating and self-assembling methods used to produce appropriate low-cost nanostructures from solutions are detailed, and the performance of preliminary ultra-lowcost cells made with these structures is reviewed.Keywords. Photovoltaic, nanostructured, inorganic. PACS® (2010). 81.07.-b, 88.40.hj, 88.40.hm. Why Nanostructure? An Introduction to the TopicIt has been predicted that the world's annual energy consumption will grow from its 2009 level of around 15 terawatt-years (TWyr) to as much as 30 TWyr by 2050 [1,2]. With more than 100,000 TW of solar power striking the earth at anytime, photovoltaic technology has long been regarded as an integral part of the solution to the world's energy problems [2,3]. Yet, the high cost of traditional photovoltaic technologies has prevented them from displacing a meaningful fraction of the electricity we derive from fossil fuel sources. Fortunately, the prospects for inexpensive photovoltaic electricity generation are improving. In recent years much research has focused on reducing the price, or cost per watt, of photovoltaic cells. In particular, the emergence of fabrication and characterization techniques on the nanometer scale (nanotechnology) has enabled new strategies to harness the sun's power in a cost-effective way. In this review, the manner in which nanotechnology is being used to improve the cost-performance balance of photovoltaic cells composed of inorganic semiconductors will be discussed. The basics of solar cell operation will be briefly explained and traditional solar cells composed of expensive, highly-crystalline inorganic semiconductors will be summarized. Next, we will explain how controlling the morphology of the semiconductors on the scale of hundreds of nanometres or less can improve the collection of electricity-generating charges from the cells, reducing their stringent materials requirements and permitting cheaper fabrication. Various techniques for fabricating nanostructures of traditional photovoltaic semiconductors will be detailed and the performance of state of the art nanostructured inorganic solar cells will be reported. A discussion will follow, in which the availability of traditional photovoltaic semiconductors and the methods for producing relevant nanostructures will be evaluated in the context of whether truly inexpensive solar cells can...

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Section: Vapor-liquid-solid Techniquesmentioning

confidence: 99%

Nanostructured Inorganic Solar Cells

Musselman¹,

Schmidt‐Mende²

2011

Green

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“…These methods include wet chemical method, electrochemical method, vapour-liquid-solid method, physical and chemical vapour deposition, dc and ac sputtering [25][26][27][28][29][30][31]. Each method has its advantages and certain limitations.…”

Section: Growth Methodologies and Morphologymentioning

confidence: 99%

Review on Wet Chemical Growth and Anti-bacterial Activity of Zinc Oxide Nanostructures

Samanta¹

2017

J Tissue Sci Eng

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Metal oxide semiconductor nanostructures are of keen interest to the researchers as they exhibit multifunctional properties compared to their bulk counterpart. Amongst several metal-oxide nanostructures zinc oxide is very popular because of its unique optoelctronic properties which are of wide importance in the field of nano-optoelectronic devices. Moreover, it also exhibit antibacterial activity which is very important in the field of medical science. This article briefly summarizes the wet chemical growth and anti-bacterial activity of several ZnO nanostructures with a view to provide the reader an overall feature of ZnO nanostructures. -Oxygen atom -Zinc atom

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“…Wagner & Ellis (Wagner & Ellis, 1964) first reported this mechanism in the 1960s to produce micrometer-sized wires, later justified thermodynamically and kinetically by Givargizov in 1975(Givargizov, 1975. In the early twenty-first century, this mechanism is extensively explored by several research groups worldwide to prepare nanowires and NRs from a rich variety of inorganic materials (Wu & Yang, 2000;Zhang et al, 2001;Wu & Yang, 2001;Gudiksen & Lieber, 2000;Wu et al, 2002b;Duan & Lieber, 2000;Pan et al, 2001;Gao et al, 2003;Chen et al, 2001;Wang et al, 2002b). The VLS growth mechanism is practically demonstrated by Yang group (Wu & Yang, 2001) with the help of in-situ transmission electron microscopy (TEM) techniques by monitoring the VLS growth mechanism in real time.…”

Section: Vapor-liquid-solid Growth Methodsmentioning

confidence: 99%