High-Efficiency Polariton Organic Photodetectors via Trap-Assisted Photomultiplication.

ABSTRACT: We report a high-performance photomultiplication-type organic photodetector (OPD) based on a poly[2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylenevinylene]:[6,6]-phenyl-C₆₁-butyric acid methyl ester (MDMO-PPV:PC₆₁BM) active layer operating in the ultrastrong coupling regime. Systematic optimization of the PC₆₁BM ratio in reference non-cavity devices confirms that trap-assisted hole injection from the Ag contact enables external quantum efficiencies (EQEs) exceeding 2000% and fast transient responses under 521 nm illumination, close to the absorption peak of MDMO-PPV. Incorporation of the optimized PC₆₁BM ratio into a λ/2 microcavity produces well-resolved lower (LP) and upper (UP) polariton branches with a pronounced Rabi splitting of appr

SUBMITTER: Chang JF 

PROVIDER: S-EPMC12735027 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature