Abstract
Generating single photons at high temperature remains a major challenge, particularly for group III-As and III-P materials widely used in optical communication. Here, we report a high temperature single photon emitter based on a "surface-free" GaAs quantum dot (QD) in a GaAsP nanowire. By using self-catalyzed vapor-liquid-solid growth and simple surface engineering, we can significantly enhance the optical signal from the QDs with a highly polarized photoluminescence at 750 nm. The "surface-free" nanowire quantum dots show photon antibunching up to 160 K and well resolved exciton lines as high as 220 K.
| Original language | English |
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| Pages (from-to) | 13492-13500 |
| Number of pages | 9 |
| Journal | ACS Nano |
| Volume | 13 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 26 Nov 2019 |