Detection technique for vitamin D3 using Er-doped TiO2 nanowire-based UV photodetector

Dwivedi, Shyam Murli Manohar Dhar; Ghosh, Anupam; Deepthy, Sagarika; Maji, Moumita; Lahiri, Rini; Mondal, Sanjib; Ghosh, Chiranjib; Dalal, Avijit; Mondal, Aniruddha; Ghosh, Monidipa

doi:10.1117/1.jnp.14.046001

Cited by 5 publications

(2 citation statements)

References 60 publications

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“…Table 3 Peak current value of PD-DM-TFET, CP-DM-TFET and ED-DM-TFET based biosensors for both positive and negative charged biomolecules Charge Density for K=5 (C/cm 2 ) Peak Current Value (A/µm) n-PD-DM-TFET n-CP-DM-TFET n-ED-DM-TFET p-ED-DM-TFET 5×10 11 4.06×10 −7 5.36×10 −8 1.13×10 −7 5.34×10 −8 1×10 12 4.29×10 −7 5.47×10 −8 1.17×10 −7 5.13×10 −8 3×10 12 5.31×10 −7 6.06×10 −8 1.37×10 −7 4.47×10 −8 5×10 12 6.46×10 −7 6.98×10 −8 1.67×10 −7 4.01×10 −8 1×10 13 9.76×10 −7 1.09×10 −7 3.16×10 −7 3.33×10 −8 -1×10 13 1.10×10 −7 3.83×10 −8 7.45×10 −8 1.57×10 −7 -5×10 12 2.13×10 −7 4.65×10 −8 8.78×10 −8 9.09×10 −8 -3×10 12 2.72×10 −7 4.88×10 −8 9.53×10 −8 7.36×10 −8 -1×10 12 3.43×10 −7 5.11×10 −8 1.04×10 −7 6.08×10 −8 -5×10 11 3.63×10 6.78×10 4 9.28×10 5 7.18×10 5 5.89×10 5 1×10 12 1.24×10 5 1.48×10 6 1.19×10 6 3.19×10 5 3×10 12 1.12×10…”

Section: Sensitivity Comparison For Dielectric Variationmentioning

confidence: 99%

“…Certainly, label-free dielectric modulated (DM) FET biosensors are one such alternative as they are capable to detect biomolecules with different dielectric constant values and are cost efficient as compared to the existing technologies [5][6][7][8][9]. Also, TiO 2 nanowires discussed in literature are good examples of glucose and vitamin detections using novel device techniques [10,11]. SARS-CoV-2 structure is composed of multiple proteins such as spike (S), membrane (M), envelope (E) and hemagglutinin-esterase (HE) as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

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Sensitivity Analysis of Physically Doped, Charge Plasma and Electrically Doped TFET Biosensors

Biswas

Rajan

Samajdar

2021

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TFET based label-free biosensors are fast, sensitive and more power efficient as compared to CMOS biosensors, which are prone to short channel effects (SCEs). However, literature is flooded with various TFET biosensors that have become the reason of dilemma for researchers during pandemic situations like COVID-19. Therefore, in this work, a physically doped (PD), charge plasma (CP) and electrically doped (ED) dielectric modulated (DM) TFET based label-free biosensors are compared, which cover almost the entire range of doping and junctionless devices. Also, we found that the ED based TFET biosensors provide better current sensitivities of 5.10 × 10 7 , 4.77 × 10 8 and 7.11 × 10 8 for biomolecules with K=12, positive charge= 1 × 10 13 C/ cm 2 and negative charge= -1 × 10 13 C/cm 2 respectively. Hence, ED-DM-TFET based biosensors can act as promising candidates to provide better detection and identification quality.Keywords TFET . Biosensor . Physically doped (PD) . Charge plasma (CP) . Electrically doped (ED)

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Section: Sensitivity Comparison For Dielectric Variationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis of Physically Doped, Charge Plasma and Electrically Doped TFET Biosensors

Biswas

Rajan

Samajdar

2021

Silicon

View full text Add to dashboard Cite

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Superior photosensing performance by Ag nanoparticles textured Al2O3 thin film based device

et al. 2023

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Silver Nanoparticles Textured Oxide Thin Films for Surface Plasmon Enhanced Photovoltaic Properties

et al. 2021

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In this report, Ag nanoparticles were fabricated using single-step glancing angle deposition (SS-GLAD) technique upon In2O3/TiO2 thin film. Afterwards, a detailed analysis was done for the two samples such as In2O3/TiO2 thin film and In2O3/TiO2 thin film/Ag nanoparticles, to inspect the field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), ultraviolet (UV) spectroscopy and electrical properties. The reduction in bandgap energy for the samples of In2O3/TiO2 thin film/Ag nanoparticles (~4.16 eV) in comparison with the In2O3/TiO2 thin film (~4.28 eV) was due to trapped e-h recombination at the oxygen vacancies and electron transmission of Ag to the conduction band of the In2O3/TiO2 thin films. Moreover, under irradiation of photons Ag nanoparticles generated inorganic Ag-O compound attributable to the localized surface plasmon resonance (LSPR). Also, a ~90% high transmittance, ~60% and ~25% low reflectance in UV and visible region, fill factor (FF) of 53%, as well as power conversion efficiency (PCE) of 15.12% was observed for In2O3/TiO2 thin film/Ag nanoparticles than the In2O3/TiO2 thin film. Therefore, the use of Ag nanoparticles textured In2O3/TiO2 thin film based device is a promising approach for the forthcoming photovoltaic applications.

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Detection technique for vitamin D3 using Er-doped TiO2 nanowire-based UV photodetector

Cited by 5 publications

References 60 publications

Sensitivity Analysis of Physically Doped, Charge Plasma and Electrically Doped TFET Biosensors

Sensitivity Analysis of Physically Doped, Charge Plasma and Electrically Doped TFET Biosensors

Superior photosensing performance by Ag nanoparticles textured Al2O3 thin film based device

Silver Nanoparticles Textured Oxide Thin Films for Surface Plasmon Enhanced Photovoltaic Properties

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