Enhancing Communication Bandwidths of Organic Color Converters Using Nanopatterned Hyperbolic Metamaterials

Yang, Xuanyu; Shi, Meng; Yu, Yang; Xie, Yujun; Liang, Rongqing; Ou, Qiongrong; Chi, Nan; Zhang, Shuyu

doi:10.1109/jlt.2018.2793217

Cited by 12 publications

(13 citation statements)

References 20 publications

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“…Till the time of writing this article, the BBEHBO-PPV achieved the highest f c among the novel color converters, whose −3dB-electrical cut-off frequency f −3dB is already ∼470 MHz in spin-coated film (its f c will be even larger), and other PPV polymers like SuperYellow, BBEHP-PPV and MEH-PPV also have τ of less than 1 ns and f c of more than hundreds of megahertz. It is surprising to find that SuperYellow exhibits a better f c and data rate performance in chlorobenzene solution [15] than on Si-Ag hyperbolic metamaterials (HMMs) [40]. However, solution-based color converters are not suitable for mass production as their performances may be influenced by solvent evaporation and leakage.…”

Section: ) Color Convertermentioning

confidence: 99%

Recent Advances in the Hardware of Visible Light Communication

Zhang

Wang

et al. 2019

IEEE Access

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Visible light communication (VLC) is an emerging technology that can transform lighting facilities into access points for wireless communication. Its development is bottlenecked by the cut-off frequencies (e.g., −6-dB electrical cut-off frequency f c and −3-dB electrical cut-off frequency f −3 dB ) of hardware, such as light-emitting diodes (LEDs), color converters, and photodetectors (PDs). In the past decade, especially in 2018, many materials and devices have been tested for properties related to VLC, such as f c , response time, and transmission data rates, which are listed and analyzed here to get an updated overall picture. The f −3 dB for the latest blue LED and color converter can reach up to 1485 and 470 MHz, respectively, which are great improvements from <5 MHz for conventional white LEDs. Among the new PDs, the largest characterized f c is 4.2 MHz. Moreover, the smallest response time of these PDs is 0.95 ns, which is promising to have f c of hundreds of megahertz. The limitation in the field of view when the active area is reduced to enlarge f c of the PD can be partially overcome with novel fluorescent antenna, whose f c is more than 40 MHz. These increments in the f c or f −3 dB of hardware not only enlarge the channel capacity of the VLC but also facilitate the channel impulse response measurement, and the system becomes more susceptible to changes in the environment. These advances will shed light on the future development of the VLC with faster speed, more portable devices, and more applications for the Internet of Things.INDEX TERMS Optical wireless communication, physical layer, transceiver, micro-LED, aggregationinduced emission, perovskite, quantum dot, channel modeling.

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Section: ) Color Convertermentioning

confidence: 99%

Recent Advances in the Hardware of Visible Light Communication

Zhang

Wang

et al. 2019

IEEE Access

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“…Several types of gratings and nano-patterned structures have been used to increase η. For instance, in [55], [103], [125]- [127] the authors have used a patterned HMM surrounded by QEs (as shown in Figure 1.8 (a)), while in [128], [129] the QEs are used inside the patterned HMM ( Figure 1.8 (b)). Metallic or dielectric gratings on top of the HMM have also been used for this purpose, such as in [124] where the QEs are used at the bottom of the HMM (Figure 1.8 (c)), or in [57], [120], [121] where they are used inside the HMM (Figure 1.8 (d)).…”

Section: Grating-assisted Radiation Emission Of Quantum Emittersmentioning

confidence: 99%

“…Regarding the QEs properties, both P Figure 1.8. (a) Nano-patterned HMM surrounded by QEs [55], [103], [125]- [127]. (b) QEs inside the patterned HMM [128], [129].…”

Section: Grating-assisted Radiation Emission Of Quantum Emittersmentioning

confidence: 99%

“…Another advantage of the semi-analytical model is the reduced computational burden to obtain P and Wrad as function of the QEs and grating relative position, highlighting the behavior of each QE to the system. Moreover, this mapping is an important tool for the understanding of the decay behavior of the whole system [55], [114] since in most applications the QEs are randomly positioned inside the polymer [55], [57], [103], [120], [121], [125]- [129]. Many authors have treated the decay behavior by fitting g(t) as a sum of exponentials [121], [126], [130], which does not accurately represent the overall behavior of the system.…”

Section: Grating-assisted Radiation Emission Of Quantum Emittersmentioning

confidence: 99%

“…These parameters are mapped here as function of the QE and NPHM relative position, which is facilitated by the method's low computational cost. This mapping is a helpful tool to understand the decay behavior of the whole system [55], [114] since QEs are randomly distributed and oriented inside the NPHM [55], [57], [103], [120], [121], [125]- [129]. By knowing the QE's Γ and η at each position allows the decay curve g(t) of a system with multiple QEs to be analytically calculated.…”

Section: Chapter 5 -Introductionmentioning

confidence: 99%

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