This article demonstrates efficient photon up-conversion in molecular heterojunctions using charge-transfer states, suggesting advancements in photodetector technologies.
Photon Up-Conversion In the Research Article (DOI: 10.1002/admi.202500897), Maciej Klein, Evan G. Moore, Ajay K. Pandey, and co-workers describe a novel strategy for harnessing near-infrared photons to advance solid-state photon interconversion in molecular heterojunctions. The NIR-absorbing molecular stack enables efficient triplet generation via charge-transfer state formation, amplifying triplet population density and yielding high photon up-conversion quantum efficiencies under incoherent, low-intensity illumination. The underlying excitonic cascade makes it highly attractive for quantum sensing and photodetector technologies.
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Klein et al. (2026) studied this question.
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