About LED

History of LED

In 1962, Nick Holonyak Jr., invented the first visible-spectrum LED (red diode). Since then, different other LED colors were invented and, eventually, the white light. A once expensive luxury, LED has not only become more affordable but also more energy efficient. LED lights have a lifespan of 50000 hours and tend to last longer than any other bulbs on the market. In 2012, more than 49 million LED products were installed in the US, with a reduction in annual energy costs equivalent to around $675 million. This significant amount is witness to the efficiency of LED lighting and the power it has (and saves) in the long run. It is important to note that since 2012, LED lighting has only been improving in terms of life expectancy and low energy consumption and can be found at even cheaper prices as competition grows worldwide.

Technical explanation 

A light-emitting diode (LED) is a two-lead semiconductor light source. It is a p–n junction diode that emits light when activated. When a suitable current is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the colour of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor.

Advantages of LED

► 50000 light hours-  Their long life span (nearly 20 times longer than traditional lighting) allows you to make use of them for nearly 6 years. This also helps reduce the impact on the environment that comes with manufacturing new products and the disposal of the old bulbs.