Light-emitting transistor
| Working principle | Electroluminescence |
|---|---|
| Inventor | Milton Feng Nick Holonyak |
A light-emitting transistor or LET is a form of transistor that emits light. Higher efficiency than light-emitting diode (LED) is possible.[citation needed]
History
[edit]Reported in the January 5, 2004 issue of the journal Applied Physics Letters, Milton Feng and Nick Holonyak,[1] the inventor of the first practical light-emitting diode (LED) and the first semiconductor laser to operate in the visible spectrum, made the world's first light-emitting transistor. This hybrid device, fabricated by Feng's graduate student Walid Hafez, had one electrical input and two outputs (electrical output and optical output) and operated at a frequency of 1 MHz. The device was made of indium gallium phosphide, indium gallium arsenide, and gallium arsenide, and emitted infrared photons from the base layer.[2][3]
Organic LET
[edit]An organic light-emitting transistor (OLET) is a form of transistor that emits light. These transistors have potential for digital displays and on-chip optical interconnects.[4] OLET is a new light-emission concept, providing planar light sources that can be easily integrated in substrates like silicon, glass, and paper using standard microelectronic techniques.[5]
OLETs differ from OLEDs in that an active matrix can be made entirely of OLETs, whereas OLEDs must be combined with switching elements such as TFTs.
See also
[edit]References
[edit]- ↑ Feng, M.; Holonyak, N.; Hafez, W. (2004). "Light-emitting transistor: Light emission from InGaP/GaAs heterojunction bipolar transistors". Applied Physics Letters. 84 (1): 151–153. Bibcode:2004ApPhL..84..151F. doi:10.1063/1.1637950.
- ↑ "First Light-Emitting Transistor". IEEE Spectrum.
- ↑ New light-emitting transistor could revolutionize electronics industry
- ↑
Savage, Neil (2010-05-04). "Organic Transistor Could Outshine OLEDs > OLETs are faster and might make better on-chip optical interconnects". IEEE. IEEE. Archived from the original on 2022-06-12. Retrieved 2022-06-12.
A transistor that emits light and is made from organic materials could lead to cheaper digital displays and fast-switching light sources on computer chips, according to the researchers who built it
- ↑
Berger, Michael (2010-05-06). "Organic light-emitting transistors outperforming OLEDs". nanowerk.com. Archived from the original on 2022-05-15. Retrieved 2022-06-12.
[...] OLETs could open a new era in organic optoelectronics and serve as test beds to address general fundamental optoelectronic and photonic issues
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