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Use of carrier injection engineering to increase the light intensity of a polycrystalline silicon avalanche mode light-emitting device.
- Source :
-
Journal of Applied Physics . 11/7/2020, Vol. 128 Issue 17, p1-8. 8p. - Publication Year :
- 2020
-
Abstract
- This paper demonstrates a polycrystalline silicon avalanche mode light-emitting device. The unique N+PN+PN+ cascade structure is designed to enhance light intensity via carrier injection engineering, in which the minority carriers are injected from the forward-biased junction to the light emission junction. Visible light can be observed at the reverse-biased PN junctions when the device operating voltage exceeds 20 V. In particular, the phonon-assisted indirect interband recombination of carriers with excess energy may be the main mechanism of photon emission. A specific junction model is proposed to explain that the light intensity peaks are generated primarily via carrier injection. Comparing the spectral measurements of a single polysilicon N+P junction device and the proposed cascade device shows that the strategy of improving the luminous intensity via carrier injection engineering is feasible and effective. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LIGHT intensity
*POLYCRYSTALLINE silicon
*AVALANCHES
*VISIBLE spectra
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 128
- Issue :
- 17
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 146911988
- Full Text :
- https://doi.org/10.1063/5.0020113