Journal ArticleDOI
Pores in III–V Semiconductors
Helmut Föll,Sergiu Langa,Sergiu Langa,J. Carstensen,Marc Christophersen,Ion Tiginyanu,Ion Tiginyanu +6 more
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TLDR
In this paper, electrochemically etched pores in III-V compound semiconductors (GaP, InP, GaAs) with emphasis on nucleation and formation mechanisms, pore geometries and morphologies, and to several instances of self-organization.Abstract:
The paper reviews electrochemically etched pores in III-V compound semiconductors (GaP, InP, GaAs) with emphasis on nucleation and formation mechanisms, pore geometries and morphologies, and to several instances of self-organization. Self-organization issues include the formation of single-crystalline two-dimensional hexagonal arrays of pores with lattice constants as small as 100 nm found in InP, synchronized and unsynchronized diameter oscillations coupled to current and voltage oscillations, and pore domain formation. The findings are discussed in relation to pores observed in silicon. Some novel porperties of the porous layers obtained in III-V compounds are briefly described.read more
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Enhanced Photocleavage of Water Using Titania Nanotube Arrays
TL;DR: It is demonstrated that the wall thickness and length of the nanotubes can be controlled via anodization bath temperature and this hydrogen generation rate is the highest reported for a titania-based photoelectrochemical cell.
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Nanoscaled metal borides and phosphides: recent developments and perspectives
TL;DR: Chimie de la Matier̀e Condenseé de Paris, UPMC Univ Paris 06, UMR 7574, Colleǵe de France, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05; Laboratory Heteroelements and Coordination, Chemistry Department, Ecole Polytechnique, CNRS-UMR 7653, Palaiseau, France
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Highly-ordered TiO2 nanotube arrays up to 220 µm in length: use in water photoelectrolysis and dye-sensitized solar cells
Karthik Shankar,Gopal K. Mor,Haripriya E. Prakasam,Sorachon Yoriya,Maggie Paulose,Oomman K. Varghese,Craig A. Grimes +6 more
TL;DR: Paulose et al. as mentioned in this paper reported an extension of the fabrication technique to achieve TiO2 nanotube arrays up to 220 µm in length, with a length-toouter diameter aspect ratio of ≈1400, and their initial application in dye-sensitized solar cells and hydrogen production by water photoelectrolysis.
Journal ArticleDOI
Synthesis and application of highly ordered arrays of TiO2 nanotubes
TL;DR: In this paper, high-ordered, vertically oriented TiO2 nanotube arrays fabricated by potentiostatic anodization of titanium constitute a material architecture that offers a large internal surface area without a concomitant decrease in geometric and structural order.
Journal ArticleDOI
Wire metamaterials: physics and applications.
TL;DR: The physics and applications of a broad class of artificial electromagnetic materials composed of lattices of aligned metal rods embedded in a dielectric matrix are reviewed, including a wire medium possessing extreme optical anisotropy.