Carrier Recombination, Long-Wavelength Photoluminescence, and Stimulated Emission in HgCdTe Quantum Well Heterostructures

Vladimir Rumyantsev, Mikhail Fadeev, Vladimir Aleshkin, Nikita Kulikov, Vladimir Utochkin, Nikolai Mikhailov, Sergey Dvoretskii, Sergey Pavlov, Heinz Wilhelm Hübers, Vladimir Gavrilenko, Carlo Sirtori, Zakhary F. Krasilnik, Sergey Morozov

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Interband photoluminescence (PL) and stimulation emission (SE) from HgTe/HgCdTe quantum well (QW) heterostructures are studied in 5–20 µm wavelength range in regard to long-wavelength lasing applications. The authors obtain carrier lifetimes using time-resolved photoconductivity measurements and show that the dominating mechanism of carrier recombination changes from the radiative process to the non-radiative one as the bandgap is decreased, limiting the “operating” temperature for SE. The authors suggest that decreasing the QW width should reverse the balance in carrier recombination in favor of radiative processes and demonstrate 75 K improvement in the “operating” temperature in structure with narrower QW.

Original languageEnglish
Article number1800546
Number of pages6
JournalPhysica Status Solidi (B) Basic Research
Volume256
Issue number6
DOIs
Publication statusPublished - 1 Jun 2019

Keywords

  • carrier recombination
  • HgCdTe
  • radiative recombination
  • stimulated emission
  • DIODE-LASERS
  • AUGER
  • HGTE/CDTE SUPERLATTICES
  • CASCADE LASERS
  • LIFETIME

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