| Full text | |
| Author(s): |
Castro, E. D. Guarin
;
Pfenning, A.
;
Hartmann, F.
;
Naranjo, A.
;
Knebl, G.
;
Teodoro, M. D.
;
Marques, G. E.
;
Hoefling, S.
;
Bastard, G.
;
Lopez-Richard, V.
Total Authors: 10
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW APPLIED; v. 23, n. 1, p. 12-pg., 2025-01-23. |
| Abstract | |
Concurrent natural time scales related to relaxation, recombination, trapping, and drifting processes rule the semiconductor heterostructures' response to external drives when charge carrier fluxes are induced. This paper highlights the role of stoichiometry not only for the quantitative tuning of the electron-hole dynamics, but also for significant qualitative contrasts of time-resolved optical responses during the operation of resonant tunneling devices. Therefore, similar device architectures and different compositions have been compared to elucidate the correlation among structural parameters, radiative recombination processes, and electron-hole pair and minority-carrier relaxation mechanisms. When these ingredients intermix with the electronic structure in Sb-based tunneling devices, it is proven possible to assess various time scales according to the intensity of the current flux, contrary to what has been observed in As-based tunneling devices with similar design and transport characteristics. These time scales are strongly affected by the filling process in the P and L states in Sb-based double-barrier quantum wells and by the small separation between these states, compared to similar heterostructures based on As. (AU) | |
| FAPESP's process: | 14/07375-2 - Multi-user equipment approved in grant 2013/18719-1: time resolved measurement system |
| Grantee: | Marcio Daldin Teodoro |
| Support Opportunities: | Multi-user Equipment Program |
| FAPESP's process: | 14/02112-3 - Optical and transport phenomena in nano-devices |
| Grantee: | Victor Lopez Richard |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 14/19142-2 - Characterization and processing of semiconductor nanostructures and application as devices |
| Grantee: | Gilmar Eugenio Marques |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 13/18719-1 - Electronic carriers dynamics in semiconductor nanostructures |
| Grantee: | Marcio Daldin Teodoro |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 18/01914-0 - Functionalizing the optical emission in quantum tunneling nanostructures in different spectral intervals |
| Grantee: | Marcio Daldin Teodoro |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 22/10340-2 - Scientific MUE: acquisition of a high temporal, spatial and spectral resolution fluorescence system operating over a wide temperature range |
| Grantee: | Gilmar Eugenio Marques |
| Support Opportunities: | Research Infrastructure Program - Scientific |
| FAPESP's process: | 15/13771-0 - Multi-User Equipment approved in grant 14/19142-2: ultra-low vibration cryostat with magnetic field and confocal microscope |
| Grantee: | Gilmar Eugenio Marques |
| Support Opportunities: | Multi-user Equipment Program |