期刊
SCIENTIFIC REPORTS
卷 11, 期 1, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41598-021-00203-y
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资金
- U.K. EPSRC [EP/M025330/1]
- EPSRC
- EPSRC [EP/M025330/1] Funding Source: UKRI
A simplified approach for fabricating high-reflectivity mirrors suitable for organic-semiconductor microcavity applications has been developed. This method was used to construct a microcavity with a molecular dye, revealing that the roughness of the hybrid mirror affects the collapse of the population above the condensation threshold.
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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