How Led Grow Lights Work \n LED grow light technology is accelerated and delivered on some \nbig promises over the past two years. LED Grow lights were touted as the next \nbig thing for the past 5 -years but missed the mark until recently. With money \npouring into research and development this exciting grow options time has come. \nIt is now possible for an LED grow light to produce the same quantity of light \nas a HPS only using 40% electricity and creating much less heat. \n All that is good and well but are you wondering how all that \nmagic happens? I know I’ve wanted to understand the process for some time now \nso, I’m doing the research and writing this article for me and you. LED grow \nlights are a very technical topic, but I’ll try to keep it as simple as \npossible. \n Pull up your socks because here we go. LED stands for \nlight-emitting diodes. These little magic lights are found in every form of \nelectronics today from TVs to Phones. \n What the heck is a Diode? \n To understand what a Light Emitting Diode is first you’ll need to know what a \nsemiconductor is. Keeping it simple, a semiconductor is made up of materials \nthat have specific electrical characteristics. Some materials act as resistors \nand some as conductors. The common denominator is that most semiconductors are \nmade from silicon. In the case of light emitting diodes, aluminum gallium arsenide or AIGaAs \nis used. \n Diodes are just semiconductor devices that conduct current in a \nspecific way. Think of diodes as tiny light bulbs that fit on a circuit. \nThese LEDs don’t rely on passing current through tiny filaments to produce \nlight which means they don’t burn out like traditional incandescent light bulbs \nand they don’t produce nearly as much heat. \n \n Photo By US. Department of Energy Department \n N-type materials \n Within N-Type semiconductors, free electrons travel from \nnegatively charged area to positively charged areas. \n P-type materials \n Within P-Type materials, electrons “jump” into holes which allow \nthem to move to positively charged areas. \n How this all comes together \n The diode is made up from both “N” and “P”-type materials with \nelectrodes on both ends. Electricity is only able to flow through the diode one \nway. \n If there is no voltage applied to the diode, the electrons in \nthe N-type material fill up the holes in the P-type material as well as the \ntiny space between the two materials which is called the depletion zone. \n Within the depletion zone all the holes in the N-Type material \nare full and, electrons are actively filling holes. Since all the holes are \nfilled; light can’t be created because the charge isn’t able to flow. \n To make the diode light up, you need to rid the unit of its depletion \nzone. This is achieved by forcing electrons from the N-Type material to the \nP-Type material which causes the holes to move in reverse direction. \n Emptying the Depletion Zone \n Emptying the depletion zone is achieved by connecting the N-material \nto the negative end of a circuit, and the P-Type side to the positive end of a \ncircuit. \n Since opposites attract the negative electrode repels the \nelectrons in the N-Type material and, those electrons are attracted to the \npositive electrode on the opposite side of the circuit. The holes in the P-type \nmaterial are then pushed towards the negative electrode. \n When the voltage applied to the circuit and, the electrical \nfield becomes strong enough to create a large enough difference between the \nelectrodes is when the magic starts to happen. \n The electrons that have been plugging up the holes in the P-Type \nmaterial will come to life when enough voltage is applied which allows the \ncharge to travel across the diode. \n The electrons in the depletion zone will come out to play once \nthe voltage is high enough, getting rid of it altogether. This allows for a \ncharge to move across the diode creating light. \n Hold on how is the light created? \n The photons emanating from the diode are invisible to the naked \neye because the wavelength of light generated is not within the visible \nspectrum of light. The “color” or the wavelength of light emitted is affected \nby the type of material the electrons drop through (remember the holes) and how \nfar they drop. The distance the photons drop can shorter or longer and this dictated the wavelength of the photons. \n Light visible to the naked eye that is generated by your led \ngrow light is visible because it fell a farther distance through the holes in \nthe P-Type material. \n Visible light LEDs are created from materials that have a larger \ngap (holes) which creates a greater drop for the photon which creates greater \nenergy. \n If you are still interested in learning more about LED grow \nlight there is a ton more material to go over as well as reviews of the best \n LED grow lights available for growing cannabis.