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Photon Upconversion at Crystalline Organic–Organic Heterojunctions
Author(s) -
Oldenburg Michael,
Turshatov Andrey,
Busko Dmitry,
Wollgarten Stephanie,
Adams Michael,
Baroni Nicolò,
Welle Alexander,
Redel Engelbert,
Wöll Christof,
Richards Bryce S.,
Howard Ian A.
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201601718
Subject(s) - photon upconversion , materials science , heterojunction , optoelectronics , photon , nanotechnology , optics , luminescence , physics
Triplet transfer across a surface‐anchored metal–organic‐framework heterojunction is demonstrated by the observation of triplet–triplet annihilation photon upconversion in a sensitizer–emitter heterostructure. Upconversion thresholds under 1 mW cm −2 are achieved. In the broader context, the double‐electron‐exchange mechanism of triplet transfer indicates that the heterojunction quality is sufficient for electrons to move between layers in this solution‐processed crystalline heterostructure.