DNA-CTMA/a-Si:H bio-hybrid photodiode: A light-sensitive photosensor

Reddy, M. Siva Pratap; Puneetha, Peddathimula; Lee, Young-Woong; Jeong, Seonghoon; Park, Chinho

doi:10.1016/j.orgel.2017.08.025

Cited by 11 publications

(5 citation statements)

References 41 publications

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“…It can be clearly seen that these states ( N ss ) decrease almost exponentially with increasing energy differences ( E ss – E v ) in the dark, while they begin to increase in the deep trap levels for each illumination intensity. It can be said that the illuminations that create charge pairs at the interface also cause an increase in the interface/surface states at deep trap levels. − …”

Section: Results and Discussionmentioning

confidence: 99%

The Electrical and Photodetector Characteristics of the Graphene:PVA/p-Si Schottky Structures Depending on Illumination Intensities

Ulusoy,

Koçyiğit,

Tataroğlu

et al. 2024

ACS Omega

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Five samples were fabricated to obtain a diode with a PVA interface, both with and without graphene doping at different rates with high rectification in the dark. The electrospinning method was employed to apply the doped and undoped solutions, creating the interlayers. Since the diode with a 1 wt % graphene-doped PVA interlayer outperformed the other samples, the main electrical and photodetector characteristics of this structure were investigated. The electrical parameters of the diode were probed by the TE, Norde, and Cheung methods, and the parameters (n and ϕ B ) acquired by both approaches were significantly influenced by illumination and voltages. The interface/surface state intensity values (N ss ) were also calculated in the dark and under each illumination as a function of the band/energy gap depth (E ss −E v ). The time-dependent steady-state conditions and rise-decay behavior of the photocurrents during illumination were also investigated. Due to the high photocurrent values, the photosensitivity at zero bias is approximately 1.4 × 10 4 at 100 mW cm −2 . The responsivity and detectivity values appear to be altered significantly with changes in the illumination and voltage. Additionally, a double logarithmic plot of I ph vs P reveals good linearity with slope values ranging from 0.5 to 1.

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Section: Results and Discussionmentioning

confidence: 99%

The Electrical and Photodetector Characteristics of the Graphene:PVA/p-Si Schottky Structures Depending on Illumination Intensities

Ulusoy,

Koçyiğit,

Tataroğlu

et al. 2024

ACS Omega

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“…Four distinct peaks located at ≈513, 923, 1354, and 1590 cm −1 , respectively, are the characteristic peaks of Si and carbon. [ 27,28 ] Carbon peaks are divided into a disorder band (D‐band) at 1354 cm −1 and an apparent graphitic band (G‐band) at 1590 cm −1 . The value of I D / I G is 0.987, indicating that the carbon shells and carbon nets have been partially changed into graphitic.…”

Section: Resultsmentioning

confidence: 99%

“…Then the electrochemical activation process of whole cell materials pushes its capacity from 92 to 128 mA h g −1 after the 1100th cycle, which is comparable to those of reported full cells based on Si anodes. [ 28,37,55 ] Three porous yolk‐shell Si@void@C particles embedded in carbon nets, that continues nanostructure does not completely make electrolytes wetting the inside of Si particles in the initial 1000 cycles. After 1100 cycles, as the electrolyte gradually permeates, the smooth SEI films could be clearly observed on the surface of Si@void@C particles.…”

Section: Resultsmentioning

confidence: 99%

Facile and Scalable Synthesis of Si@void@C Embedded in Interconnected 3D Porous Carbon Architecture for High Performance Lithium‐Ion Batteries

Tan

Liu

et al. 2021

Part & Part Syst Charact

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Si‐based materials possess huge potential as an excellent anode material for Li‐ion batteries. However, how to realize scalable synthesis of Si‐based anode with a long cycling life and high‐performance is still a critical challenge. Here a water‐in‐oil microemulsion process followed by UV illumination, calcination, and hydrothermal method to produce yolk‐shell Si@void@C embedded in interconnected 3D porous carbon network architecture using silicon nanoparticles is reported. As a result, the sample Si@void@C/C‐2 electrode has achieved a reversible capacity of 1160 mA h g−1 at 0.2 A g−1 after 300 cycles and a stable long cycling life of 480 mA h g−1 at 1 A g−1 after 1000 cycles. A full battery with the synthesized anode shows a capacity of 128 mA h g−1 at 0.2 A g−1 as well as good cycling stability after 1100th cycles. Such excellent electrochemical performance is ascribed to its unique structure, the yolk‐shell void space, highly robust carbon shells and interconnected porous carbon nets that can improve the conductivity of the electrode, buffer the volume expansion, and also suppress Si nanoparticles stress variation. This water‐in oil system makes it possible for mass production of environmentally friendly synthesis of core–shell structure.

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“…The development of a non-toxic and biocompatible multifunctional strain sensor that fulfills the requirements of high flexibility, mechanosensitivity, and robustness remains a challenge. Many biocompatible materials, including carbon dots, fluorescent proteins, and deoxyribonucleic acid (DNA), have been previously explored [ 15 , 16 , 17 ]. However, these biocompatible materials present limitations such as the extraction processing methods and protocols for carbon dots and fluorescent proteins.…”

Section: Introductionmentioning

confidence: 99%

Strain-Modulated Flexible Bio-Organic/Graphene/PET Sensors Based on DNA-Curcumin Biopolymer

Mallem,

Puneetha,

Lee

et al. 2024

Biomolecules

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In recent years, there has been growing interest in the development of metal-free, environmentally friendly, and cost-effective biopolymer-based piezoelectric strain sensors (bio-PSSs) for flexible applications. In this study, we have developed a bio-PSS based on pure deoxyribonucleic acid (DNA) and curcumin materials in a thin-film form and studied its strain-induced current-voltage characteristics based on piezoelectric phenomena. The bio-PSS exhibited flexibility under varying compressive and tensile loads. Notably, the sensor achieved a strain gauge factor of 407 at an applied compressive strain of −0.027%, which is 8.67 times greater than that of traditional metal strain gauges. Furthermore, the flexible bio-PSS demonstrated a rapid response under a compressive strain of −0.08%. Our findings suggest that the proposed flexible bio-PSS holds significant promise as a motion sensor, addressing the demand for environmentally safe, wearable, and flexible strain sensor applications.

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DNA-CTMA/a-Si:H bio-hybrid photodiode: A light-sensitive photosensor

Cited by 11 publications

References 41 publications

The Electrical and Photodetector Characteristics of the Graphene:PVA/p-Si Schottky Structures Depending on Illumination Intensities

The Electrical and Photodetector Characteristics of the Graphene:PVA/p-Si Schottky Structures Depending on Illumination Intensities

Facile and Scalable Synthesis of Si@void@C Embedded in Interconnected 3D Porous Carbon Architecture for High Performance Lithium‐Ion Batteries

Strain-Modulated Flexible Bio-Organic/Graphene/PET Sensors Based on DNA-Curcumin Biopolymer

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