LEDs based upon AlGaInP heterostructures with multiple quantum wells: Comparison of fast neutrons and gamma-quanta irradiation

A. V. Gradoboev, K. N. Orlova, A. V. Simonova

Research output: Contribution to journalConference article

Abstract

The paper presents the research results of watt and volt characteristics of LEDs based upon AlGaInP heterostructures with multiple quantum wells in the active region. The research is completed for LEDs (emission wavelengths 624 nm and 590 nm) under irradiation by fast neutron and gamma-quanta in passive powering mode. Watt-voltage characteristics in the average and high electron injection areas are described as a power function of the operating voltage. It has been revealed that the LEDs transition from average electron injection area to high electron injection area occurs by overcoming the transition area. It disappears as it get closer to the limit result of the irradiation LEDs that is low electron injection mode in the entire supply voltage range. It has been established that the gamma radiation facilitates initial defects restructuring only 42% compared to 100% when irradiation is performed by fast neutrons. Ratio between measured on the boundary between low and average electron injection areas current value and the contribution magnitude of the first stage LEDs emissive power reducing is established. It is allows to predict LEDs resistance to irradiation by fast neutrons and gamma rays.

Original languageEnglish
Article number012010
JournalIOP Conference Series: Materials Science and Engineering
Volume363
Issue number1
DOIs
Publication statusPublished - 24 May 2018
Event2nd International Conference on Cognitive Robotics - Tomsk, Russian Federation
Duration: 22 Nov 201725 Nov 2017

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Electron injection
Semiconductor quantum wells
Light emitting diodes
Heterojunctions
Neutrons
Irradiation
Gamma rays
Electric potential
Laser modes
Wavelength
Defects

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

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title = "LEDs based upon AlGaInP heterostructures with multiple quantum wells: Comparison of fast neutrons and gamma-quanta irradiation",
abstract = "The paper presents the research results of watt and volt characteristics of LEDs based upon AlGaInP heterostructures with multiple quantum wells in the active region. The research is completed for LEDs (emission wavelengths 624 nm and 590 nm) under irradiation by fast neutron and gamma-quanta in passive powering mode. Watt-voltage characteristics in the average and high electron injection areas are described as a power function of the operating voltage. It has been revealed that the LEDs transition from average electron injection area to high electron injection area occurs by overcoming the transition area. It disappears as it get closer to the limit result of the irradiation LEDs that is low electron injection mode in the entire supply voltage range. It has been established that the gamma radiation facilitates initial defects restructuring only 42{\%} compared to 100{\%} when irradiation is performed by fast neutrons. Ratio between measured on the boundary between low and average electron injection areas current value and the contribution magnitude of the first stage LEDs emissive power reducing is established. It is allows to predict LEDs resistance to irradiation by fast neutrons and gamma rays.",
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T2 - Comparison of fast neutrons and gamma-quanta irradiation

AU - Gradoboev, A. V.

AU - Orlova, K. N.

AU - Simonova, A. V.

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N2 - The paper presents the research results of watt and volt characteristics of LEDs based upon AlGaInP heterostructures with multiple quantum wells in the active region. The research is completed for LEDs (emission wavelengths 624 nm and 590 nm) under irradiation by fast neutron and gamma-quanta in passive powering mode. Watt-voltage characteristics in the average and high electron injection areas are described as a power function of the operating voltage. It has been revealed that the LEDs transition from average electron injection area to high electron injection area occurs by overcoming the transition area. It disappears as it get closer to the limit result of the irradiation LEDs that is low electron injection mode in the entire supply voltage range. It has been established that the gamma radiation facilitates initial defects restructuring only 42% compared to 100% when irradiation is performed by fast neutrons. Ratio between measured on the boundary between low and average electron injection areas current value and the contribution magnitude of the first stage LEDs emissive power reducing is established. It is allows to predict LEDs resistance to irradiation by fast neutrons and gamma rays.

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