SWIR Photodetection and Visualization Realized by Incorporating an Organic SWIR Sensitive Bulk Heterojunction

Ning Li, Zhaojue Lan, Ying Suet Lau, Jiajun Xie, Dahui Zhao, Fu Rong ZHU*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Short-wavelength infrared (SWIR) photodetection and visualization has profound impacts on different applications. In this work, a large-area organic SWIR photodetector (PD) that is sensitive to SWIR light over a wavelength range from 1000 to 1600 nm and a SWIR visualization device that is capable of upconverting SWIR to visible light are developed. The organic SWIR PD, comprising an organic SWIR sensitive blend of a near-infrared polymer and a nonfullerene n-type small molecule SWIR dye, demonstrates an excellent capability for real-time heart rate monitoring, offering an attractive opportunity for portable and wearable healthcare gadgets. The SWIR-to-visible upconversion device is also demonstrated by monolithic integration of an organic SWIR PD and a perovskite light-emitting diode, converting SWIR (1050 nm) to visible light (516 nm). The most important attribute of the SWIR visualizing device is its solution fabrication capability for large-area SWIR detection and visualization at a low cost. The results are very encouraging, revealing the exciting large-area SWIR photodetection and visualization for a plethora of applications in environmental pollution, surveillance, bioimaging, medical, automotive, food, and wellness monitoring.

Original languageEnglish
Article number2000444
JournalAdvanced Science
Volume7
Issue number14
DOIs
Publication statusPublished - 1 Jul 2020

Scopus Subject Areas

  • Medicine (miscellaneous)
  • Chemical Engineering(all)
  • Biochemistry, Genetics and Molecular Biology (miscellaneous)
  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

User-Defined Keywords

  • organic photodetectors
  • solution fabrication
  • SWIR photodetection
  • SWIR visualization

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