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Related Concept Videos

Photoelectric Effect02:26

Photoelectric Effect

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When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
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A Au/CuNiCoS4/p-Si photodiode: electrical and morphological characterization.

Adem Koçyiğit1,2, Adem Sarılmaz3, Teoman Öztürk4

  • 1Department of Electrical Electronic Engineering, Engineering Faculty, Igdir University, 76000 Igdir, Turkey.

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Copper nickel cobalt sulfide (CuNiCoS4) nanocrystals were synthesized and tested. The resulting material shows promise for high-efficiency optoelectronic devices like photodiodes due to its excellent electrical and photoresponse properties.

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Au/CuNiCoS4/p-Si deviceCuNiCoS4Schottky devicesoptoelectronic applications

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Solid State Physics

Background:

  • Thiospinel nanocrystals are promising for electronic applications.
  • Developing novel materials for optoelectronics is crucial for technological advancement.

Purpose of the Study:

  • To synthesize and characterize CuNiCoS4 thiospinel nanocrystals.
  • To evaluate the performance of CuNiCoS4 as an interfacial layer in Au/CuNiCoS4/p-Si devices for photodiode and capacitance applications.

Main Methods:

  • Hot injection synthesis for CuNiCoS4 nanocrystals.
  • Characterization using X-ray diffractometry (XRD), high-resolution transmission electron microscopy (HR-TEM), and energy-dispersive X-ray spectroscopy (EDS).
  • Electrical and capacitance measurements (I-V and C-V characteristics) to assess device performance.

Main Results:

  • Successful synthesis of CuNiCoS4 thiospinel nanocrystals confirmed by XRD, HR-TEM, and EDS.
  • Fabricated Au/CuNiCoS4/p-Si devices demonstrated good rectifying behavior, high photoresponse, and favorable resistance parameters.
  • Capacitance and conductance were found to be dependent on voltage and frequency.

Conclusions:

  • CuNiCoS4 thiospinel nanocrystals are successfully synthesized and characterized.
  • The fabricated devices exhibit excellent properties suitable for optoelectronic applications.
  • The material shows potential for use in high-efficiency photodiode applications.