Electrochemical deposition and characterization of Cu2O nanowires

Liu, X.M.; Zhou, Yanchun

doi:10.1007/s00339-005-3243-z

Cited by 48 publications

(31 citation statements)

References 34 publications

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“…Most initial work on producing nanostructured semiconductors (e.g. ZnO, TiO 2 , Cu 2 O) using AAO templates utilized thin, unsupported templates poorly suited for device fabrication [47,90,[92][93][94][95]. A metal film was typically deposited on one side of the template to act as the conducting electrode at the base of the nano-sized pores.…”

Section: Template-assisted Synthesis Of Ultra-low-cost Photovoltaic Nmentioning

confidence: 99%

Nanostructured Inorganic Solar Cells

Musselman¹,

Schmidt‐Mende²

2011

Green

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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: Template-assisted Synthesis Of Ultra-low-cost Photovoltaic Nmentioning

confidence: 99%

Nanostructured Inorganic Solar Cells

Musselman¹,

Schmidt‐Mende²

2011

Green

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“…Thus, the consumption and subsequent supply of OH − in the interface occurs stably along the solution/solid interface, leading to the formation of a uniform and smooth layer. Liu and Zhou have reported that the diffusion rate of OH − in AAO nanochannels is slower than that on a flat substrate for the deposition of Cu 2 O nanowires [15]. Considering the very small path and high aspect ratio in the nanochannels, the diffusion and mass transport of OH − is limited.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Cu/Cu2O composite nanowire arrays on Si via AAO template-mediated electrodeposition

Lee

Leu

et al. 2007

Journal of Alloys and Compounds

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“…These factors include temperature, flow rate of the carrier gas, precursor concentration, operation pressure, and the growth time; the size of the particles can be altered by changing the temperature, the flow rate of the carrier gas, and the precursor nuclei concentration (Maisels et al, 2000;Ohno, 2002;Wegner et al, 2002;Kim et al, 2004;Simchi et al, 2007). In addition, the rate of production of nanoparticles can be dramatically increased when the synthesis reactor is operated at a higher pressure, with correspondingly shorter growth times.…”

Section: Vapor Phase Reactionmentioning

confidence: 98%

Synthesis of Nanoparticles and One-Dimensional Nanomaterials

Park¹,

Choi²

2009

Nanotechnologies for Water Environment Applications

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Nanomaterials can be defined as materials that have an average phase or grain size of less than 100 nm. Nanomaterials exhibit novel properties which can significantly differ from those of bulk materials due to their unique physicochemical (i.e., size, shape) and surface (i.e., reactivity, conductivity) properties (Seigel, 1993). Also, nanomaterials themselves have different properties depending on how nanomaterials are synthesized and how their atoms and molecules are ordered. For example, metal oxide nanoparticles including semiconductor nanoparticles, which were synthesized using different methods and under different experimental conditions (i.e., temperature, reaction time), have different physicochemical and surface properties (Chan et al., 2002, Jung et al., 2007. Recently, numerous approaches based on the application of these properties have been developed and applied to the synthesis of nanomaterials. This implies that inherent properties pertaining to chemical reactivity or physical compaction play an essential role in nanomaterials synthesis.In this chapter, several common and unique techniques for nanoparticles and one-dimensional nanomaterials synthesis will be introduced. NanoparticlesPrimarily, synthesis techniques for nanoparticles can be divided into "top-down" approaches and "bottom-up" approaches. Top-down approaches typically start with a suitable bulk material and then break the bulk material into smaller pieces. Ball-milling or attrition and pattern formation are common methods of a top-down approach. For

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Electrochemical deposition and characterization of Cu2O nanowires

Cited by 48 publications

References 34 publications

Nanostructured Inorganic Solar Cells

Nanostructured Inorganic Solar Cells

Fabrication of Cu/Cu2O composite nanowire arrays on Si via AAO template-mediated electrodeposition

Synthesis of Nanoparticles and One-Dimensional Nanomaterials

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