Photon Upconversion at Crystalline Organic–Organic Heterojunctions. Issue 38 (8th August 2016)

• Record Type: Journal Article
• Authors: Oldenburg, Michael; Turshatov, Andrey; Busko, Dmitry; Wollgarten, Stephanie; Adams, Michael; Baroni, Nicolò; Welle, Alexander; Redel, Engelbert; Wöll, Christof; Richards, Bryce S.; Howard, Ian A.
• Is Part Of: Advanced materials. Volume 28:Issue 38(2016)
• Page Start: 8477
• Page End: 8482
• Publication Date: 2016-08-08
• Subjects: heterostructures -- surface‐anchored metal–organic frameworks -- triplet–triplet annihilation -- upconversion; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201601718
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : 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.