- Tytuł:
- Voltage-tunable dual-colour quantum Bragg mirror detector (QBMD)
- Autorzy:
-
Penello, Germano M.
Pereira, Pedro H.
Sousa, Vitor B.
Kawabata, Rudy M. S.
Pires, Mauricio P.
Souza, Patricia L. - Powiązania:
- https://bibliotekanauki.pl/articles/2204218.pdf
- Data publikacji:
- 2023
- Wydawca:
- Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
- Tematy:
-
bound states in the continuum
intersubband transition
infrared detector
quantum Bragg mirror and dual-colour detection - Opis:
- The electronic quasi-bound state in the continuum concept is explored in an InGaAs/InAlAs heterostructure to create a voltage-tunable dual-colour quantum Bragg mirror detector. This heterostructure is based on one main quantum well embedded between two different superlattices. By bandgap engineering, each superlattice gives rise to quasi-bound states in the continuum with a preferential direction for electron extraction. Due to these states, the photovoltaic photocurrent presents a dual-colour response, one in a positive direction at 340 meV (3.6 µm), and one in a negative direction at 430 meV (2.9 µm). The simultaneous dual-colour detection can be switched to a single-colour detection (340 meV or 430 meV) by applying a bias voltage. At 77 K, the specific detectivity for simultaneous dual-colour is 2.5·10⁸ Jones, while the single-colour detectivities are 2.6·10⁹ Jones at +2.0 V and 7.7·10⁸ Jones at -1.6 V for 340 meV and 430 meV, respectively.
- Źródło:
-
Opto-Electronics Review; 2023, 31, Special Issue; art. no. e144559
1230-3402 - Pojawia się w:
- Opto-Electronics Review
- Dostawca treści:
- Biblioteka Nauki
Artykuł