What does STE mean in UNCLASSIFIED
STE (Self Trapped Exciton) is a bound state of an electron and a hole in a semiconductor material. The electron and hole are spatially confined to a small region, typically on the order of a few nanometers. STE is a type of localized excitation that can be created by the absorption of a photon or by the injection of carriers into a semiconductor.
STE meaning in Unclassified in Miscellaneous
STE mostly used in an acronym Unclassified in Category Miscellaneous that means Self Trapped Exciton
Shorthand: STE,
Full Form: Self Trapped Exciton
For more information of "Self Trapped Exciton", see the section below.
Characteristics of STE
- STEs are typically formed in indirect-gap semiconductors, where the minimum energy of the conduction band is at a different k-vector than the maximum energy of the valence band.
- STEs have a long lifetime, on the order of microseconds to milliseconds.
- STEs can be mobile, and can diffuse through the semiconductor material.
- STEs can interact with other defects in the semiconductor, such as impurities and dislocations.
Applications of STE
STEs have a number of potential applications, including:
- Light-emitting diodes (LEDs)
- Solar cells
- Laser diodes
- Sensors
Essential Questions and Answers on Self Trapped Exciton in "MISCELLANEOUS»UNFILED"
What is a Self Trapped Exciton (STE)?
A Self Trapped Exciton (STE) is a quasiparticle that forms when an excited electron and hole become bound to each other within a material. This binding is caused by the interaction of the electron and hole with the material's lattice vibrations, which creates a localized potential well that traps the quasiparticle.
What materials can form STEs?
STEs can form in a wide variety of materials, including semiconductors, insulators, and organic crystals. However, they are most commonly observed in wide-bandgap semiconductors, such as alkali halides and II-VI compounds.
What are the properties of STEs?
STEs have a number of unique properties, including:
- Long lifetimes: STEs can have lifetimes that are orders of magnitude longer than free excitons. This is due to the fact that the electron and hole are trapped within the potential well, which prevents them from recombining.
- Narrow emission lines: STEs emit light at specific wavelengths that are characteristic of the material in which they are formed. This makes them useful for a variety of applications, such as light-emitting diodes (LEDs) and lasers.
- High mobility: STEs can move through a material with relatively high mobility. This is due to the fact that they are not subject to the same scattering mechanisms that affect free excitons.
What are some applications of STEs?
STEs have a number of potential applications, including:
- Light-emitting diodes (LEDs): STEs can be used to create LEDs that are efficient and have a long lifespan.
- Lasers: STEs can be used to create lasers that emit light at specific wavelengths.
- Solar cells: STEs can be used to improve the efficiency of solar cells.
- Sensors: STEs can be used to create sensors that are sensitive to specific types of radiation.
Final Words: STEs are a type of localized excitation that can be created in semiconductor materials. STEs have a number of unique properties, including a long lifetime and mobility. STEs have a number of potential applications, including in LEDs, solar cells, laser diodes, and sensors.
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