Recent advances with optical upconverters made from all-organic and hybrid materials. Issue 1 (31st December 2019)

• Record Type: Journal Article
• Authors: Hany, Roland; Cremona, Marco; Strassel, Karen
• Is Part Of: Science and technology of advanced materials. Volume 20:Issue 1(2019)
• Page Start: 497
• Page End: 510
• Publication Date: 2019-12-31
• Subjects: Upconverter -- photodetector -- near-infrared -- organic light-emitting device -- NIR imaging; 40 Optical, magnetic and electronic device materials -- 204 Optics / Optical applications; Materials -- Technological innovations -- Periodicals; 620.112
• DOI: 10.1080/14686996.2019.1610057
• Languages: English
• ISSNs: 1468-6996

Abstract

ABSTRACT: The growing interest in near-infrared (NIR) imaging is explained by the increasing number of applications in this spectral range, which includes process monitoring and medical imaging. NIR-to-visible optical upconverters made by integrating a NIR photosensitive unit with a visible emitting unit convert incident NIR light to visible light, allowing imaging of a NIR scene directly with the naked eye. Optical upconverters made entirely from organic and hybrid materials – which include colloidal quantum dots, and metal-halide perovskites – enable low-cost and pixel-free NIR imaging. These devices have emerged as a promising addition to current NIR imagers based on inorganic semiconductor photodiode arrays interconnected with read-out integrated circuitry. Here, we review the recent progress in the field of optical upconverters made from organic and hybrid materials, explain their functionality and characterization, and identify open challenges and opportunities. GRAPHICAL ABSTRACT: uf0001