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Optoelectronics

  • Optoelectronics is the study and application of electronic devices and systems that source, detect and control light, usually considered a sub-field of photonics.
  • In this context, light often includes invisible forms of radiation such as gamma rays, X-rays, ultraviolet and infrared, in addition to visible light.
  • Materials such as tungsten diselenide (WSe2) and molybdenum diselenide are being studied keenly for their opto-electronic properties.
  • A key property of these materials is photoluminescence, in which the material absorbs light and re-emits it as a spectrum.
  • Photoluminescence properties can be used in various devices such as quantum LEDs which can be used in communication and computation.

Photoluminescence:Photoluminescence is a process in which a molecule absorbs a photon in the visible region, exciting one of its electrons to a higher electronic excited state, and then radiates a photon as the electron returns to a lower energy state.

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