Microscale optoelectronic infrared-to-visible upconversion devices and their use as injectable light sources

Optical upconversion that converts infrared light into visible light is of significant interest for broad applications in biomedicine, imaging, and displays. Conventional upconversion materials rely on nonlinear light-matter interactions, exhibit incidence-dependent efficiencies, and require high-po...

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Vydáno v:Proceedings of the National Academy of Sciences - PNAS Ročník 115; číslo 26; s. 6632
Hlavní autoři: Ding, He, Lu, Lihui, Shi, Zhao, Wang, Dan, Li, Lizhu, Li, Xichen, Ren, Yuqi, Liu, Changbo, Cheng, Dali, Kim, Hoyeon, Giebink, Noel C, Wang, Xiaohui, Yin, Lan, Zhao, Lingyun, Luo, Minmin, Sheng, Xing
Médium: Journal Article
Jazyk:angličtina
Vydáno: United States 26.06.2018
Témata:
Animals
Arsenicals
Behavior, Animal
Biocompatible Materials
Brain Mapping - instrumentation
Equipment Design
Gallium
Infrared Rays
Mice
Mice, Nude
Miniaturization
Optogenetics - instrumentation
Optogenetics - methods
Photons
Prostheses and Implants
Rats
Semiconductors
Somatosensory Cortex - physiology
Subcutaneous Tissue
upconversion
optoelectronics
optogenetics
ISSN:1091-6490, 1091-6490
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Popis
Shrnutí:Optical upconversion that converts infrared light into visible light is of significant interest for broad applications in biomedicine, imaging, and displays. Conventional upconversion materials rely on nonlinear light-matter interactions, exhibit incidence-dependent efficiencies, and require high-power excitation. We report an infrared-to-visible upconversion strategy based on fully integrated microscale optoelectronic devices. These thin-film, ultraminiaturized devices realize near-infrared (∼810 nm) to visible [630 nm (red) or 590 nm (yellow)] upconversion that is linearly dependent on incoherent, low-power excitation, with a quantum yield of ∼1.5%. Additional features of this upconversion design include broadband absorption, wide-emission spectral tunability, and fast dynamics. Encapsulated, freestanding devices are transferred onto heterogeneous substrates and show desirable biocompatibilities within biological fluids and tissues. These microscale devices are implanted in behaving animals, with in vitro and in vivo experiments demonstrating their utility for optogenetic neuromodulation. This approach provides a versatile route to achieve upconversion throughout the entire visible spectral range at lower power and higher efficiency than has previously been possible.
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ISSN:1091-6490
1091-6490
DOI:10.1073/pnas.1802064115