منابع مشابه
Hyperbranched lead selenide nanowire networks.
Lead chalcogenide nanostructures are good potential candidates for applications in multiexciton solar cells, infrared photodetectors, and electroluminescence devices. Here we report the synthesis and electrical measurements of hyperbranched PbSe nanowire networks. Hyperbranched PbSe nanowire networks are synthesized via a vapor-liquid-solid (VLS) mechanism. The branching is induced by continuou...
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A bstruct-Measurements of the near-field intensity dis ributions of .7 three lead-sulfide-selenide diode lasers operating near 4.8 pm have been made as a function of injection current. Localized emission in the near field exhibits peaked structure of full width from 5 to 10 pm for operation above threshold. From the dependence of the emission profiles on injection current estimates of 25 ...
متن کاملMultiple-exciton generation in lead selenide nanorod solar cells with external quantum efficiencies exceeding 120%
Multiple-exciton generation-a process in which multiple charge-carrier pairs are generated from a single optical excitation-is a promising way to improve the photocurrent in photovoltaic devices and offers the potential to break the Shockley-Queisser limit. One-dimensional nanostructures, for example nanorods, have been shown spectroscopically to display increased multiple exciton generation ef...
متن کاملSynthesis and Properties of Lead Selenide Nanocrystal Solids
We present results of our investigation of the synthesis, structural properties and electrical transport properties of lead selenide (PbSe) nanoparticle-derived solids. Stable colloidal solutions containing crystalline PbSe particles with sizes on the order of 5–10 nm were synthesized using an organometallic lyothermal growth method in high-temperature organic solvents (100∼200 ◦C). The nanopar...
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With the miniaturization of transistor size, fabrication of transistor with lithography technique is a foreseen problem. It is possible to routinely create semiconductor nanocrystals whose dimensions are much smaller than those can be realized by lithography techniques using colloidal chemistry. The size of the nanocrystals can be varied easily by varying the process parameters to study the qua...
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ژورنال
عنوان ژورنال: Nature
سال: 1949
ISSN: 0028-0836,1476-4687
DOI: 10.1038/163322a0