Chemical engineers' research may lead to inexpensive, flexible solar cells (w/ Video)
(Phys.org) —Work by a team of chemical engineers at Penn State and Rice University may lead to a new class of inexpensive organic solar cells.
(Phys.org) —Work by a team of chemical engineers at Penn State and Rice University may lead to a new class of inexpensive organic solar cells.
Nanomaterials
Aug 22, 2013
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(Phys.org) —A research collaboration consisting of IHP-Innovations for High Performance Microelectronics in Germany and the Georgia Institute of Technology has demonstrated the world's fastest silicon-based device to date. ...
Electronics & Semiconductors
Feb 19, 2014
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(PhysOrg.com) -- A group of researchers working in Japan has devised a means of creating dual segmented nanotubes where each segment has separate and distinct semiconducting properties. The team describes how they were able ...
(PhysOrg.com) -- Researchers at the University of Illinois have found a new way to make transistors smaller and faster. The technique uses self-assembled, self-aligned, and defect-free nanowire channels made of gallium arsenide.
Nanophysics
Apr 20, 2009
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A report, published in the March 14 edition of the Journal of Materials Chemistry, announced the successful fabrication and testing of a new type solar cell using an inorganic core/shell nanowire structure.
Nanophysics
Apr 12, 2011
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As circuits become smaller and more densely populated with circuit elements, electrical characteristics of the components become more prone to the influence of the heat generated. "The interaction between thermal and electrical ...
Electronics & Semiconductors
Dec 24, 2014
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An international research team led by the University of Cologne has succeeded for the first time in connecting several atomically precise nanoribbons made of graphene, a modification of carbon, to form complex structures. ...
Nanomaterials
May 12, 2021
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In 2004, electrical engineering pioneers Nick Holonyak, Jr. and Milton Feng at the University of Illinois invented the transistor laser—a three-port device that incorporated quantum-wells in the base and an optical cavity—increasing ...
Optics & Photonics
Dec 5, 2016
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A new theoretical model developed by professors at the University of Houston (UH) and Université de Montréal may hold the key to methods for developing better materials for solar cells.
Materials Science
Jan 29, 2014
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Preventing the recombination of free charges produced when light strikes a solar cell is one of the main goal of engineers attempting to extract the maximum energy conversion efficiency from their devices. One way to achieve ...
Nanomaterials
Aug 19, 2011
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A heterojunction is the interface that occurs between two layers or regions of dissimilar crystalline semiconductors. These semiconducting materials have unequal band gaps as opposed to a homojunction. It is often advantageous to engineer the electronic energy bands in many solid state device applications including semiconductor lasers, solar cells and transistors ("heterotransistors") to name a few. The combination of multiple heterojunctions together in a device is called a heterostructure although the two terms are commonly used interchangeably. The requirement that each material be a semiconductor with unequal band gaps is somewhat loose especially on small length scales where electronic properties depend on spatial properties. A more modern definition may be to say that a heterojunction is the interface between any two solid-state materials including crystalline and amorphous structures of metallic, insulating, fast ion conductor and semiconducting material.
In 2000, the Nobel Prize in physics was awarded jointly to Herbert Kroemer (University of California at Santa Barbara, California, USA) and Zhores I. Alferov (A.F. Ioffe Physico-Technical Institute, St. Petersburg, Russia) for "developing semiconductor heterostructures used in high-speed- and opto-electronics"
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