17 citations · 28 across the 2 of their papers we have counts for
3 papers
Highly uniform GaSb quantum dots with indirect-direct bandgap crossover at telecom range
Abhiroop Chellu, Joonas Hilska, Jussi-Pekka Penttinen +1
We demonstrate a new quantum-confined semiconductor material based on GaSb quantum dots (QDs) embedded in single-crystalline AlGaSb matrix by filling droplet-etched nanoholes. The…
Nanohole etching in AlGaSb with Ga droplets
Joonas Hilska, Abhiroop Chellu, Teemu Hakkarainen
We demonstrate nanohole formation in AlGaSb by Ga droplet etching within a temperature range from 270°C to 500°C, allowing a wide range of tunability of the nanohole density. By le…
Epitaxial phases of high Bi content GaSbBi alloys
Joonas Hilska, Eero Koivusalo, Janne Puustinen +2
GaSbBi alloys have recently emerged as attractive materials for mid-infrared optoelectronics owing to strong band gap reduction enabled by Bi incorporation into the GaSb matrix. Th…