Dynamic upconversion multicolour editing enabled by molecule-assisted opto-electrochemical modulation.
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In this article, a programmable logic gate array based on opto-electrochemical modulation can be constructed to convert information-encrypted electrical signals into visible patterns with millisecond photonic readout.Abstract:
Controlling nonlinear optical signals electrically offers many opportunities for technological developments. Lanthanide-activated nanoparticles have recently emerged as leading platforms for nonlinear upconversion of infra-red excitation within nanometric volumes. However, manipulation of upconversion emission is restricted to varying percentages of component materials, nanocrystal structure, and optical pumping conditions. Here, we report temporal modulation of anti-Stokes luminescence by coupling upconversion nanoparticles with an electrochemically responsive molecule. By electrically tailoring orbital energy levels of the molecules anchored on nanoparticle surfaces, we demonstrate reversible control of molecular absorption, resulting in dynamic colour editing of anti-Stokes luminescence at single-particle resolution. Moreover, we show that a programmable logic gate array based on opto-electrochemical modulation can be constructed to convert information-encrypted electrical signals into visible patterns with millisecond photonic readout. These findings offer insights into precise control of anti-Stokes luminescence, while enabling a host of applications from low-threshold infrared logic switches to multichannel, high-fidelity photonic circuits. Though upconversion nanoparticles (UCNPs) are attractive for infrared detecting and modulating photonic devices, devising strategies to electrically manipulate upconversion emission remain a challenge. Here, the authors report molecule-assisted opto-electrochemical modulation of UCNP luminescence.read more
Citations
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High-security anti-counterfeiting through upconversion luminescence
TL;DR: In this paper, the authors focus on recent advances in anti-counterfeiting technology that exploits the remarkable tunability of upconversion luminescence to design optical codes with high-level security.
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Lanthanide-doped heterostructured nanocomposites toward advanced optical anti-counterfeiting and information storage
TL;DR: In this paper , a multimodal nanocomposite composed of lanthanide-doped upconverting nanoparticle and EuSe semiconductor was constructed by utilizing a cation exchange strategy.
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Lanthanide-doped heterostructured nanocomposites toward advanced optical anti-counterfeiting and information storage
TL;DR: In this paper , a multimodal nanocomposite composed of lanthanide-doped upconverting nanoparticle and EuSe semiconductor was constructed by utilizing a cation exchange strategy.
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Photon upconversion through triplet exciton-mediated energy relay.
Sanyang Han,Zhigao Yi,Jiangbin Zhang,Jiangbin Zhang,Qifei Gu,Liangliang Liang,Xian Qin,Jiahui Xu,Yiming Wu,Hui Xu,Akshay Rao,Xiaogang Liu +11 more
TL;DR: In this article, the authors demonstrate photon upconversion of diverse lanthanide emitters by harnessing triplet exciton-mediated energy relay, which is less dependent on excitation power and enhances the emission intensity of Tb3+ by 158 times.
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Recent Development in Sensitizers for Lanthanide-Doped Upconversion Luminescence.
TL;DR: In this paper , a review of advances in sensitizers, including the current status, working mechanisms, design principles, as well as future challenges and endeavor directions, is presented.
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