Advances in solution-processed near-infrared light-emitting diodes

• Published in: Nature photonics Vol. 15; no. 9; pp. 656 - 669
• Main Authors: Vasilopoulou, Maria, Fakharuddin, Azhar, García de Arquer, F. Pelayo, Georgiadou, Dimitra G., Kim, Hobeom, Mohd Yusoff, Abd. Rashid bin, Gao, Feng, Nazeeruddin, Mohammad Khaja, Bolink, Henk J., Sargent, Edward H.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 01.09.2021; Nature Publishing Group
• Subjects: 639/301/1019/1020; 639/624/1020/1091; Applied and Technical Physics; Biomedical materials; Colloiding; Emitters; I.R. radiation; Light emitting diodes; Near infrared radiation; Night vision; Optical communication; Organic semiconductors; Perovskites; Physics; Physics and Astronomy; Quantum dots; Quantum Physics; Review Article; Semiconductors
• ISSN: 1749-4885; 1749-4893; 1749-4893
• DOI: 10.1038/s41566-021-00855-2

Near-infrared light-emitting diodes based on solution-processed semiconductors, such as organics, halide perovskites and colloidal quantum dots, have emerged as a viable technological platform for biomedical applications, night vision, surveillance and optical communications. The recently gained increased understanding of the relationship between materials structure and photophysical properties has enabled the design of efficient emitters leading to devices with external quantum efficiencies exceeding 20%. Despite considerable strides made, challenges remain in achieving high radiance, reducing efficiency roll-off and extending operating lifetime. This Review summarizes recent advances on emissive materials synthetic methods and device key attributes that collectively contribute to improved performance of the fabricated light-emitting devices. A summary of recent advances in the near-infrared light-emitting diodes that are fabricated by solution-processed means, with coverage of devices based on organic semiconductors, halide perovskites and colloidal quantum dots.