An eco-friendly imprinted polymer based on graphene quantum dots for fluorescent detection of <i>p</i>-nitroaniline

Cai, Li‐Zhen; Zhang, Zhaohui; Xiao, Haimei; Chen, Shan; Fu, Jinli

doi:10.1039/c9ra08726e

Cited by 99 publications

(54 citation statements)

References 40 publications

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“…The material has good transparency and its transmittance is up to 92%. It can increase electron charge transmission and reduce defects [60,61], improve short-circuit current, open-circuit voltage and FF [62][63][64]. Therefore, PMMA was placed on the top layer as the light absorption layer in this paper, and we studied the solar cell absorption under different proportions of pervious glass and silica glass on the top layer of the structure, as shown in Figure 6.…”

Section: Resultsmentioning

confidence: 99%

Based on Ultrathin PEDOT:PSS/c-Ge Solar Cells Design and Their Photoelectric Performance

Yang

et al. 2021

Coatings

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In recent years, nanostructures have improved the performance of solar cells and are regarded as the most promising microstructures. The optical properties of PEDOT:PSS/c-Ge hybrid solar cells (HSCs) based on the octagon germanium nanoparticles (O-GNPs) were numerically analyzed using the finite-difference time-domain (FDTD) method. The optimal structure of the hybrid solar cell is determined by changing the thickness of the organic layer and structural parameters of nanoparticles to enhance the optical absorption and eventually achieve high broadband absorption. By changing the structure parameter of O-GNPs, we studied its effect on solar cells. The optimization of geometric parameters is based on maximum absorption. The light absorption of our optimized HSCs is basically above 90% between 200 and 1500 nm. PEDOT:PSS is placed on top of O-GNPs to transmit the holes better, allowing O-GNPs to capture a lot of photons, to increase absorbance value properties in the AM1.5 solar spectral irradiated region. The transmittance is increased by adding poly-methyl methacrylate (PMMA). At the same time, the electrical characteristics of Ge solar cells were simulated by DEVICE, and short-circuit current (Jsc), open-circuit voltage (Voc), maximum power (Pmax), filling coefficient (FF) and photoelectric conversion efficiency (PCE) were obtained. According to the optimization results after adjusting the structural parameters, the maximum short-circuit current is 44.32 mA/cm2; PCE is 7.84 mW/cm2; FF is 69%. The results show that the O-GNPs have a good light trapping effect, and the structure design has great potential for the absorption of HSCs; it is believed that the conversion efficiency will be further improved through further research.

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Section: Resultsmentioning

confidence: 99%

Based on Ultrathin PEDOT:PSS/c-Ge Solar Cells Design and Their Photoelectric Performance

Yang

et al. 2021

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“…Normally, the direction of the incident light is not fixed in nature [ 56 , 57 , 58 ]. The absorption capacity under incident light with different angles is also an important factor for the assessment of the performance of the solar energy absorber.…”

Section: Resultsmentioning

confidence: 99%

Ultra-Wideband and Wide-Angle Perfect Solar Energy Absorber Based on Titanium and Silicon Dioxide Colloidal Nanoarray Structure

Wei

et al. 2021

Nanomaterials

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In this paper, we designed an ultra-wideband solar energy absorber and approved it numerically by the finite-difference time-domain simulation. The designed solar energy absorber can achieve a high absorption of more than 90% of light in a continuous 3.506 μm (0.596 μm–4.102 μm) wavelength range. The basic structure of the absorber is based on silicon dioxide colloidal crystal and Ti. Since the materials have a high melting point, the designed solar energy absorber can work normally under high temperature, and the structure of this solar energy absorber is simpler than most solar energy absorbers fabricated with traditional metal. In the entire wavelength band researched, the average absorption of the colloidal crystal-based solar energy absorber is as high as 94.3%, demonstrating an excellent performance under the incidence light of AM 1.5 solar spectrum. In the meantime, the absorption spectrum of the solar energy absorber is insensitive to the polarization of light. In comparison to other similar structures, our designed solar energy absorber has various advantages, such as its high absorption in a wide spectrum range and that it is low cost and easy to make.

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“…In the far-infrared and terahertz band, a striking feature of graphene unlike traditional precious metals is that its surface plasmon resonance (SPR) has an extremely strong field confinement and lower ohmic loss. It can be closely combined with deep subwavelength nano-level light [39][40][41][42][43][44][45], which greatly promotes its light absorption rate in many devices, such as photoelectric sensors, optical detectors, waveguides, and ultra-fast switches [46][47][48][49][50]. In addition, the most significant feature of graphene plasmons is that the surface conductivity of graphene can be adjusted by changing the Fermi level or chemical potential.…”

Section: Introductionmentioning

confidence: 99%

A Tunable “Ancient Coin”-Type Perfect Absorber with High Refractive Index Sensitivity and Good Angular Polarization Tolerance

Luo

Shangguan

et al. 2021

Coatings

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In this paper, we design and present a graphene-based “ancient coin”-type dual-band perfect metamaterial absorber, which is composed of a silver layer, silicon dioxide layer, and a top “ancient coin” graphene layer. The absorption performance of the absorber is affected by the hollowed-out square in the center of the graphene layer and geometric parameters of the remaining nano disk. The optical properties of graphene can be changed by adjusting the voltage, to control the absorption performance of the absorber dynamically. In addition, the centrally symmetric pattern structure greatly eliminates the polarization angle dependence of our proposed absorber, and it exhibits good angular polarization tolerance. Furthermore, the proposed “ancient coin”-type absorber shows great application potential as a sensor or detector in biopharmaceutical, optical imaging, and other fields due to its strong tunability and high refractive index sensitivity.

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An eco-friendly imprinted polymer based on graphene quantum dots for fluorescent detection of p-nitroaniline

Abstract: An eco-friendly fluorescent molecularly imprinted polymer anchored on the surface of graphene quantum dots (GQDs@MIP) was developed with an efficient sol–gel polymerization for highly sensitive and selective determination of p-nitroaniline (p-NA).

Cited by 99 publications

References 40 publications

Based on Ultrathin PEDOT:PSS/c-Ge Solar Cells Design and Their Photoelectric Performance

Based on Ultrathin PEDOT:PSS/c-Ge Solar Cells Design and Their Photoelectric Performance

Ultra-Wideband and Wide-Angle Perfect Solar Energy Absorber Based on Titanium and Silicon Dioxide Colloidal Nanoarray Structure

A Tunable “Ancient Coin”-Type Perfect Absorber with High Refractive Index Sensitivity and Good Angular Polarization Tolerance

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