Journal ArticleDOI
Fabrication and electrical properties of si nanowires synthesized by Al catalyzed vapor-liquid-solid growth.
Yue Ke,Xiaojun Weng,Joan M. Redwing,Chad Eichfeld,Thomas R. Swisher,Suzanne E. Mohney,Youssef M. Habib +6 more
TLDR
Results suggest that Al is incorporated into the Si nanowires under these conditions at concentrations higher than the solubility limit (5-6 x 10(18) cm(-3)) for Al in Si at 550 degrees C.Abstract:
The synthesis of epitaxially oriented Si nanowires at high growth rates (>1 μm/min) was demonstrated on (111) Si substrates using Al as the catalyst. The use of high H2 and SiH4 partial pressures was found to be effective at reducing problems associated with Al oxidation and nanowire nucleation, enabling growth of high aspect ratio structures at temperatures ranging from 500 to 600 °C with minimal tapering of the diameter. Because of the high growth rate observed, the Al catalyst is believed to be in the liquid state during the growth. Four-point resistance measurements and back-gated current−voltage measurements indicate that the wires are p-type with an average resistivity of 0.01 ± 0.004 Ω-cm. These results suggest that Al is incorporated into the Si nanowires under these conditions at concentrations higher than the solubility limit (5−6 × 1018 cm−3) for Al in Si at 550 °C. This work demonstrates that Al can serve as both an effective catalyst and p-type dopant for the growth of Si nanowires.read more
Citations
More filters
Journal ArticleDOI
Silicon Nanowires for Photovoltaic Solar Energy Conversion
Kui-Qing Peng,Shuit-Tong Lee +1 more
TL;DR: The recent developments in the utilization of SiNWs for PV applications, the relationship between SiNW-based PV device structure and performance, and the challenges to obtaining high-performance cost-effective solar cells are reviewed.
Journal ArticleDOI
Silicon nanowires for advanced energy conversion and storage
TL;DR: In this article, the authors review the recent achievements on silicon nanowires for advanced energy conversion and storage applications including photovoltaics, photocatalysis, thermoelectrics, lithium-ion batteries and supercapacitors.
Journal ArticleDOI
Assembly of one dimensional inorganic nanostructures into functional 2D and 3D architectures. Synthesis, arrangement and functionality
Ravi Joshi,Jörg J. Schneider +1 more
TL;DR: This critical review is intended to provide an interesting starting point to view the current state of the art and show perspectives for future developments in this field, focusing on selected nanomaterials and the possibilities for building three dimensional arrays starting from one dimensional building blocks.
Journal ArticleDOI
Semiconductor nanowires: a platform for exploring limits and concepts for nano-enabled solar cells
TL;DR: In this paper, a feature review discusses strategies for implementation of semiconductor nanowires in solar energy applications, including advances in complex nanowire synthesis and characterization, fundamental insights from characterization of devices, utilization and control of the unique optical properties of nanwires, and new strategies for assembly and scaling of nanewires into diverse arrays that serve as a new paradigm for advanced solar cells.
Journal ArticleDOI
Coaxial multishell nanowires with high-quality electronic interfaces and tunable optical cavities for ultrathin photovoltaics
Thomas J. Kempa,James F. Cahoon,James F. Cahoon,Sun Kyung Kim,Sun Kyung Kim,Robert W. Day,David C. Bell,Hong Gyu Park,Charles M. Lieber +8 more
TL;DR: In this article, a series of polymorphic core/multishell silicon nanowires (NWs) with highly crystalline, hexagonally-faceted shells, and well-defined coaxial (p/n) and p/intrinsic/n(p/i/n)-diode junctions were synthesized for photovoltaics.
References
More filters
Journal ArticleDOI
Vapor‐liquid‐solid mechanism of single crystal growth
R. S. Wagner,W. C. Ellis +1 more
Journal ArticleDOI
Functional nanoscale electronic devices assembled using silicon nanowire building blocks.
Yi Cui,Charles M. Lieber +1 more
TL;DR: The facile assembly of key electronic device elements from well-defined nanoscale building blocks may represent a step toward a "bottom-up" paradigm for electronics manufacturing.
Journal ArticleDOI
Comparison of the device physics principles of planar and radial p-n junction nanorod solar cells
TL;DR: In this paper, a device physics model for radial p-n junction nanorod solar cells was developed, in which densely packed nanorods, each having a pn junction in the radial direction, are oriented with the rod axis parallel to the incident light direction.
Journal ArticleDOI
Solid solubilities of impurity elements in germanium and silicon
TL;DR: In this paper, the available data on solid solubilities of impurity elements in germanium and silicon are summarized in the form of solidus or solvus curves.
Journal ArticleDOI
Controlled Growth and Structures of Molecular-Scale Silicon Nanowires
TL;DR: In this article, single-crystal silicon nanowires with diameters approaching molecular dimensions were synthesized using gold nanocluster-catalyzed 1D growth using high-resolution transmission electron microscopy studies.