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Semiconductors Etch Easier with New Method

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CHAMPAIGN, Ill., Jan. 4, 2012 — A method that chemically etches patterned arrays in the semiconductor gallium arsenide will make high-end optoelectronic devices easier to create. A team of researchers led by Xiuling Li, an electrical and computer engineering professor at the University of Illinois, developed the etching method in gallium arsenide, which is used in solar cells, lasers, LEDs, field effect transistors, capacitors and sensors. The researchers’ technique was described in Nano Letters. The physical properties of a semiconductor can vary depending on its structure; therefore, a semiconductor...Read full article

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    Published: January 2012
    Glossary
    optoelectronics
    Optoelectronics is a branch of electronics that focuses on the study and application of devices and systems that use light and its interactions with different materials. The term "optoelectronics" is a combination of "optics" and "electronics," reflecting the interdisciplinary nature of this field. Optoelectronic devices convert electrical signals into optical signals or vice versa, making them crucial in various technologies. Some key components and applications of optoelectronics include: ...
    photonic crystals
    Photonic crystals are artificial structures or materials designed to manipulate and control the flow of light in a manner analogous to how semiconductors control the flow of electrons. Photonic crystals are often engineered to have periodic variations in their refractive index, leading to bandgaps that prevent certain wavelengths of light from propagating through the material. These bandgaps are similar in principle to electronic bandgaps in semiconductors. Here are some key points about...
    AmericasBragg reflector laserschemically etched patterned arraysdry etchingenergyGaAs etchinggallium arsenidegallium arsenide semiconductorsIII-V semiconductorsIllinoisindustrialJohn RogersMacEtchMicroscopynanostructuresOpticsoptoelectronicsphotonic crystalsResearch & Technologysemiconductor laserssemiconductor waferssemiconductorsSensors & Detectorssoft lithographysolar cellsUniversity of IllinoisWaferswet etchingXiuling LiLasers

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