The point where the two kinds of materials are joined forms a p-n junction.You will want to make sure you know what these lights are and how they work. The color emitted by a diode is decided by the energy gap of the material used for making its p-n junction. Nearly ninety percent of their energy consumption gets wasted due to the heat produced by them. The reason for their becoming so popular is their energy efficiency. A process using low-priced silicon wafers in place of pricey sapphire-based technology has already been developed by the researchers of the Purdue University. Conversely, LED lamps consume 75% less energy compared to incandescent lamps, and produce just 3-4 BTUs/ hour, while incandescent lamps produce 85 BTUs of heat. In fact, these little plastic pieces are not bulbs at all but rather are very small semiconductors that have been cordoned off and separated by a plastic dome. That is 1/3 to 1/30 of what is consumed by incandescent lamps or CFLs.S. This dome assists to protect the light that is being emitted as well as focuses it on a specific area. This type of light gets its name from the fact that it is based off a light emitting diode. In fact, they have already proved to be a better option to incandescent and fluorescent lamps, which street light we have been using for a long time. The energy gaps of different types of p and n materials are different and measured in terms of wavelengths, which results to having light in different colors.An LED light can work upto about fifty thousand hours.A wider beam of light can be generated by bunching together a number of LED light bulbs. As per the estimates of the U. Under ideal conditions, it should not be exposed to moisture and excessive cold or hot temperatures.The energy consumption of LEDs is just 2-10 watts. But, if you are not knowledgeable about the differences between the two, you may be hesitant to pay the upfront costs that come with installing residential LED ceiling lights.When light is to be directed to a particular point, you can employ LED lights. Department of Energy, extensive use of LED lighting during the coming twenty years can help saving nearly $265 billion, amount enough for making forty additional power plants, thus reducing the demand of power for lighting by about 33 %.Nowadays 100W Led Heatsink LED light bulb are used for many lighting applications.. These developments would help a lot in replacing the usual incandescent and even CFL bulbs. The lifespan of an LED bulb is 35-50 times more than incandescent lamps and 2-5 times more of fluorescent lamps. Compared to traditional options of lighting, these lights prove much more fitted for this purpose. Of course, its life depends under which conditions it works. The composition of a diode is a slice of N-type material, carrying a negative charge and another slice of P-type material, with a positive charge, having electrodes at either end.Usual incandescent lamps are notoriously energy inefficient.If you are thinking of how to replace your lighting system with new residential LED ceiling lights, then you are probably reviewing all of the information about this technology and what such a change needs.LED lamps are available in white, green, red, blue, white or amber colors.