70 citations · 397 across the 18 of their papers we have counts for
7 papers · 1 filter
MBE-grown virtual substrates for quantum dots emitting in the telecom O- and C-bands
Bianca Scaparra, Elise Sirotti, Akhil Ajay +9
InAs semiconductor quantum dots (QDs) emitting in the near infrared are promising platforms for on-demand single-photon sources and spin-photon interfaces. However, the realization…
Correlated electro-optical and structural study of electrically tunable nanowire quantum dot emitters
Maria Spies, Akhil Ajay, Eva Monroy +2
Quantum dots inserted in semiconducting nanowires are a promising platform for the fabrication of single photon devices. However, it is difficult to fully comprehend the electro-op…
Effect of the nanowire diameter on the linearity of the response of GaN-based heterostructured nanowire photodetectors
Maria Spies, Jakub Polaczyński, Akhil Ajay +5
Nanowire photodetectors are investigated because of their compatibility with flexible electronics, or for the implementation of on-chip optical interconnects. Such devices are char…
Near- and mid-infrared intersubband absorption in top-down GaN/AlN nano- and micropillars
Jonas Lähnemann, David A. Browne, Akhil Ajay +5
We present a systematic study of top-down processed GaN/AlN heterostructures for intersubband optoelectronic applications. Samples containing quantum well superlattices that displa…
Effect of the quantum well thickness on the performance of InGaN photovoltaic cells
L. Redaelli, A. Mukhtarova, S. Valdueza-Felip +7
We report on the influence of the quantum well thickness on the effective band gap and conversion efficiency of In0.12Ga0.88N/GaN multiple quantum well solar cells. The band-to-ban…
Nonpolar m-plane GaN/AlGaN heterostructures with intersubband transitions in the 5 to 10 THz band
C. B. Lim, A. Ajay, C. Bougerol +6
This paper assesses intersubband transitions in the 1 to 10 THz frequency range in nonpolar m-plane GaN/AlGaN multi-quantum-wells deposited on free-standing semi-insulating GaN sub…
Intersubband transitions in nonpolar GaN/Al(Ga)N heterostructures in the short and mid-wavelength infrared regions
C. B. Lim, M. Beeler, A. Ajay +4
This paper assesses nonpolar m- and a-plane GaN/Al(Ga)N multi-quantum-wells grown on bulk GaN for intersubband optoelectronics in the short- and mid-wavelength infrared ranges. The…