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![NIR-fluorescence imaging of mouse brain before and after treatment with inorganic PbS QD. Reproduced with permission from reference [49]. Copyright [2021], [Elsevier].](publication/373656088/figure/fig4/AS:11431281190229498@1695262343055/NIR-fluorescence-imaging-of-mouse-brain-before-and-after-treatment-with-inorganic-PbS-QD.png)
NIR-fluorescence imaging of mouse brain before and after treatment with inorganic PbS QD. Reproduced with permission from reference [49]. Copyright [2021], [Elsevier].
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This review article focuses on the role of nanotechnology (NT) in the development of advanced organic and inorganic photodetectors and their potential applications in the coming decades. We initiate the article with an overview of NT and potential applications of Nanotechnology in the twenty-first century ranging from Semiconductor manufacturing to...
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... This integration spans a diverse array of applications, including organic photosensors, data storage memories, light-emitting displays (LEDs), organic transistors, organic light-emitting diodes (OLEDs), organic photodiodes (OPDs), and solar cells. Organic materials offer many benefits, from enhanced flexibility and lightweight design to cost-effectiveness and environmental sustainability [1][2][3][4]. ...
... Tauc plots were generated from their absorption spectra to estimate the bandgap energy of the photoanodes. These plots involve plotting (αhν) [2] against the photon energy and extrapolating the linear portion of the curve to determine the bandgap energy [56,58]. Such analysis aids in understanding the optical characteristics and potential applications of the ZnO, ZnO/TiO 2 , and ZnO/TiO 2 /Nb 2 O 5 photoanodes. ...
This study explores the utilization of Delonix regia (DR) (Gulmohar flower) as a natural photosensitizer in the fabrication of self-powered photosensors via dye-sensitized solar cells (DSSCs). Various photoanodes, including ZnO, ZnO/TiO 2 , and ZnO/TiO 2 /Nb 2 O 5 , were investigated for their performance enhancement in DR-based photosensors. The photoanodes were fabricated using different deposition methods sensitized with DR photo-sensitizer and characterized through X-ray diffraction analysis, Field emission scanning electron microscopy (FE-SEM), UV-visible, Fluorescence spectroscopy, and Fourier transform infrared spectroscopy (FTIR) analysis. The absorbance spectrum results indicate improved photosensitizer adsorption in visible light for the ZnO/TiO 2 / Nb 2 O 5 /DR photoanode compared to other configurations. The scanning electron microscopy (SEM) cross-section image of ZnO/TiO 2 /Nb 2 O 5 confirmed the formation of a multilayer photoanode. Chronoamperometry experiments were conducted to evaluate the photo sensing behavior, focusing on sensitivity, photoresponsivity, specific detectivity, and quantum efficiency within the solar spectrum range. Among the devices, ZnO/TiO 2 /Nb 2 O 5 exhibited the highest photoresponsivity (1.2 × 10 −3 A/W) and photodetectivity (26.78 × 10 4 Jones), demonstrating promising advancements in DR-sensitized photosensors. This research highlights the exceptional performance of DR-sensitized photoanodes, particularly ZnO/TiO 2 /Nb 2 O 5 , in advancing the capabilities of photo-sensing devices. The investigated configuration exhibited a rapid response speed of 723 ms and a remarkable sensitivity of 89.87% in detecting photo signals. These findings emphasize the potential of DR pho-tosensitizers to enhance photo-sensing activities, with significant implications for diverse applications in pho-todetection. By leveraging the unique properties of DR, particularly its incorporation into ZnO/TiO 2 /Nb 2 O 5 , this study underscores the promising prospects for developing efficient self-powered photosensors. The insights gleaned from this work pave the way for further exploration and optimization in organic photosensors.
... The fundamental component of many technological applications, such as photodetectors, are essential in the conversion of optical impulses into electrical signals. These gadgets are energetic parts of several industries, including scientific research, sensing, imaging, and telecommunications [1]. Photodetectors play a crucial role in optical communication systems in telecommunications because they recognize and transform modulated light signals into electrical currents, which allows for high-speed data transfer. ...
... (1) E is the energy eigenvalue and H is the Hamiltonian operator in equation (1). Within each heterostructure layer, the computed wavefunction Ψ is expanded on the periodic components of the edge Bloch functions. ...
