SPbPU Journal - Physics and Mathematics
St. Petersburg Polytechnic University Journal: Physics and Mathematics Peter the Great St. Petersburg Polytechnic University
Since 2008
ISSN 2304-9782
ISSN 2618-8686
ISSN 2405-7223
en Английский
Version for the visually impaired
Author Viacheslav A. Sergeev
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Viacheslav A. Sergeev
Viacheslav A. Sergeev
Publications
Orcid ID
0000-0003-4854-2813

Algorithm and installation for measuring the current lacing voltage in high-power RF and microwave bipolar and heterojunction bipolar transistors

Experimental technique and devices
Litvinov K.A. Radaev O.A. Kozlikova I.S. Sergeev V.A. Kulikov A.A.
  • Year: 2022
  • Volume: 15
  • Issue: 3.2
  • 9
  • 5290
  • Pages: 97-101

Measurement of the internal quantum efficiency of emission in the local region of the LED chip

Physical optics
Frolov I.V. Radaev O.A. Sergeev V.A.
  • Year: 2022
  • Volume: 15
  • Issue: 3.3
  • 18
  • 5164
  • Pages: 226-229

Measurement of the threshold current in the local areas of the LED chip

Experimental technique and devices
Frolov I.V. Radaev O.A. Sergeev V.A.
  • Year: 2023
  • Volume: 16
  • Issue: 3.1
  • 9
  • 3916
  • Pages: 330-334

Threshold current of separate spectral components of the emission spectrum of InGaN LEDs

Experimental technique and devices
Frolov I.V. Radaev O.A. Sergeev V.A.
  • Year: 2024
  • Volume: 17
  • Issue: 3.2
  • 11
  • 2404
  • Pages: 161-165

Study of thermal conductivity of polymer materials with carbon nanotubes using laser flash method

Atom physics and physics of clusters and nanostructures
Vasin S.V. Kuzmin N.P. Sergeev V.A. Buzaeva M.V.
  • Year: 2025
  • Volume: 18
  • Issue: 3.1
  • 0
  • 186
  • Pages: 135-138

Relationship between the luminous flux drop of LED matrices during tests with thermal resistance and parameters of the emission spectrum

Physical optics
Frolov I.V. Zaytsev S.A. Sergeev V.A. Radaev O.A.
  • Year: 2025
  • Volume: 18
  • Issue: 3.2
  • 0
  • 120
  • Pages: 218-222