Producing Blue Light from GaN LEDs
This state of the art report will focus on light emitting diodes LEDs made from Gallium Nitride (GaN) based semiconductors to produce blue light. The light ought to be of 475 nm in wavelength for high performance and low-cost energy necessary for energy saving light bulbs. The problem this design seeks to address is the operational cost of lighting, longevity and durability compared to the tungsten incandescent lamp. The scope of the research behind this report will focus on how LEDs work by using Gallium Nitride based semiconductors to emit energy at wavelengths of 475 nm, which is the basic characteristic of blue light, and its application to the Cree LED True White Bulb. The scope of this report, though, does not cover details of how blue light is converted to white light through an epoxy that covers the LED or any other components of the Cree LED True White Light Bulb. That is left and suggested for later research because users may want white light from the use of Gallium Nitride (GaN) LEDs.
An LED is a solid-state diode that is formed at the junction of the two types of semiconductors, n-and p-type semiconductors. The basis of semiconductors and how they operate is crucial in the design of the LEDs. Semiconductors are materials that are neither good conductors nor good insulators. They are largely from group four elements Silicon and Germanium (Fasol 32). The electrical properties t…
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