A three-dimensional ordered and self-organized semiconductor system emitting highly-polarized light in the yellow-orange visible range (580-650 nm) is presented, comprising self-assembled in-plane AlInP wires vertically stacked in regularly-spaced columns. More than 200 wires per column without detectable defect formation could be stacked. Theoretical simulations and temperature-dependent photoluminescence provided a benchmark to engineer multilayered structures showing internal quantum efficiency at room temperature larger than comparable quantum wells emitting at similar wavelengths. Finally, proof-of-concept light emitting diodes (LED) showed a high degree of light polarization and lower surface parasitic currents than comparable quantum well LEDs, providing an interesting perspective for high-efficiency polarized yellow-orange light emitting devices.
@article{arxiv.1802.03959,
title = {Three-dimensional Self-assembled Columnar Arrays of AlInP Quantum Wires for Polarized Micron-sized Amber Light Emitting Diodes},
author = {Andrea Pescaglini and Agnieszka Gocalinska and Silviu Bogusevschi and Stefano T. Moroni and Gediminas Juska and Enrica E. Mura and John Justice and Brian Corbett and Eoin O'Reilly and Emanuele Pelucchi},
journal= {arXiv preprint arXiv:1802.03959},
year = {2018}
}