Photon Recycling-Driven Photodetection Enhancement in Ni(AcO)₂-MAPbBr₃ Nanocomposite Waveguides.

Authors

Sandra Soriano-Díaz, Jaume Noguera-Gómez, Diego Ramírez-Muñoz, Pablo P Boix, Juan P Martínez-Pastor, Rafael Abargues, Isaac Suárez

Published in

Nanophotonics (Berlin, Germany). Volume 15. Issue 13. Pages e70196. Epub Jul 02, 2026.

Abstract

The reabsorption and reemision of photoluminescence (PL) photons, or photon recycled (PR) effect, has demonstrated outstanding benefits in solar cells or light-emitting diodes. Nevertheless, this process has been unexplored in photodetectors (PD) because reliably quantifying the photocurrent driven by PL photons is technically challenging. This work demonstrates the generation of a PR-driven photocurrent by incorporating a nickel acetate, Ni(AcO)₂, nanocomposite containing MAPbBr₃ (MA = methylammonium) nanocrystals (NCs) in planar waveguide structure integrating electrode contacts. The concentration of NCs in the matrix is optimized to enable efficient PL photon confinement and propagation over millimeter-scale distances until detected. Under modulated laser illumination, this mechanism enhances photocurrent by approximately 60%. Remarkably, under nanosecond pulsed excitation, the device generates an amplified spontaneous emission signal that is reabsorbed within the film, yielding a photocurrent peak of 0.8 mA per pulse. These findings demonstrate an effective strategy for enhancing the performance of MHP-based PDs.

PMID:
42845903
Bibliographic data and abstract were imported from PubMed on 08 Oct 2026.

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