Electronics & Semiconductors

Imec introduces 2-D materials in the logic device scaling roadmap

The continual scaling of Si-based transistors is challenged by short channel effects that limit further gate length scaling. Field-effect transistors (FETs) with semiconducting transition metal dichalcogenides (MX2, such ...


Semiconductor shortage forces automobile production cuts

A widening global shortage of semiconductors for auto parts is forcing major auto companies to halt or slow vehicle production just as they were recovering from pandemic-related factory shutdowns.

Consumer & Gadgets

Apple's greatest chip challenge yet: Replacing Qualcomm modems

Apple Inc. has become a chip powerhouse in the past decade, beating some of the semiconductor industry's leading companies at their own game. But the iPhone maker is embarking on its biggest challenge to date as it tries ...

Electronics & Semiconductors

New semiconductor coating may pave way for future green fuels

Hydrogen gas and methanol for fuel cells, or as raw materials for the chemicals industry, for example, could be produced more sustainably using sunlight, a new Uppsala University study shows. In this study, researchers have ...


Taiwan processor chip maker to set up $3.5 billion U.S. arm

A Taiwanese maker of processor chips for Apple Inc. and other customers plans to invest $3.5 billion to set up its second U.S. manufacturing site amid American concern about relying too heavily on sources in Asia for high-tech ...

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A semiconductor is a material that has a resistivity value between that of a conductor and an insulator. The conductivity of a semiconductor material can be varied under an external electrical field. Devices made from semiconductor materials are the foundation of modern electronics, including radio, computers, telephones, and many other devices. Semiconductor devices include the transistor, solar cells, many kinds of diodes including the light-emitting diode, the silicon controlled rectifier, and digital and analog integrated circuits. Solar photovoltaic panels are large semiconductor devices that directly convert light energy into electrical energy. In a metallic conductor, current is carried by the flow of electrons. In semiconductors, current can be carried either by the flow of electrons or by the flow of positively-charged "holes" in the electron structure of the material.

Silicon is used to create most semiconductors commercially. Dozens of other materials are used, including germanium, gallium arsenide, and silicon carbide. A pure semiconductor is often called an “intrinsic” semiconductor. The conductivity, or ability to conduct, of semiconductor material can be drastically changed by adding other elements, called “impurities” to the melted intrinsic material and then allowing the melt to solidify into a new and different crystal. This process is called "doping".

This text uses material from Wikipedia, licensed under CC BY-SA