Publication

New aspects and mechanism of kink effect in InAlAs/InGaAs/InP inverted HFETs

Marcel Py
1998
Journal Articles

Abstract

The kink effect in InAlAs/InGaAs/InP composite channel heterojunction field effect transistors (HFET's) was investigated as a function of temperature and optical excitation, Drain source and gate current measurements show that above 325 K the kink effect disappears while the impact ionization process is still present. The kink at low temperatures is suppressed by illumination with photons of energy above 1 eV. These results prove that this parasitic effect is mainly related to the presence of traps in the top layers.

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https://infoscience.epfl.ch/entities/publication/47c3f1b3-9f27-41d0-970b-734e2e54979d

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Marcel Py
1998
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/47c3f1b3-9f27-41d0-970b-734e2e54979d

About this result

Related concepts (14)

Ionization

Ionization (or ionisation) is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons, often in conjunction with other chemical changes. The resulting electrically charged atom or molecule is called an ion. Ionization can result from the loss of an electron after collisions with subatomic particles, collisions with other atoms, molecules and ions, or through the interaction with electromagnetic radiation.

Electron ionization

Electron ionization (EI, formerly known as electron impact ionization and electron bombardment ionization) is an ionization method in which energetic electrons interact with solid or gas phase atoms or molecules to produce ions. EI was one of the first ionization techniques developed for mass spectrometry. However, this method is still a popular ionization technique. This technique is considered a hard (high fragmentation) ionization method, since it uses highly energetic electrons to produce ions.

Chemical ionization

Chemical ionization (CI) is a soft ionization technique used in mass spectrometry. This was first introduced by Burnaby Munson and Frank H. Field in 1966. This technique is a branch of gaseous ion-molecule chemistry. Reagent gas molecules (often methane or ammonia) are ionized by electron ionization to form reagent ions, which subsequently react with analyte molecules in the gas phase to create analyte ions for analysis by mass spectrometry.

Related publications (1)

New aspects and mechanism of kink effect in InAlAs/InGaAs/InP inverted HFETs

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