Polariton condensation in an organic microcavity utilising a hybrid metal-DBR mirror.
Sci Rep
; 11(1): 20879, 2021 Oct 22.
Article
en En
| MEDLINE
| ID: mdl-34686707
ABSTRACT
We have developed a simplified approach to fabricate high-reflectivity mirrors suitable for applications in a strongly-coupled organic-semiconductor microcavity. Such mirrors are based on a small number of quarter-wave dielectric pairs deposited on top of a thick silver film that combine high reflectivity and broad reflectivity bandwidth. Using this approach, we construct a microcavity containing the molecular dye BODIPY-Br in which the bottom cavity mirror is composed of a silver layer coated by a SiO2 and a Nb2O5 film, and show that this cavity undergoes polariton condensation at a similar threshold to that of a control cavity whose bottom mirror consists of ten quarter-wave dielectric pairs. We observe, however, that the roughness of the hybrid mirror-caused by limited adhesion between the silver and the dielectric pair-apparently prevents complete collapse of the population to the ground polariton state above the condensation threshold.
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MEDLINE
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Sci Rep
Año:
2021
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Article
País de afiliación:
Reino Unido