LED innovations – driven by light.
Layer by layer – from wafers to LEDs
They can provide just the right touch or become an integral architectural component. LEDs (light-emitting diodes) and their bright lights offer unique design possibilities in the field of lighting. Bridges, such as the Bosporus Bridge in Istanbul, become artistic arteries of light, and airports like the one in Taipei turn into luminescent sculptures. When it comes to interior lighting, LEDs can serve as strong lighting to accentuate an ambiance and also allow large-scale room lighting in office buildings or private homes.
Advantages of LEDs: 100,000 hours of light
Due to their low energy consumption and heat radiation, the world’s smallest light sources are more economical, more reliable, and last longer than conventional lights. An LED has a service life of up to 100,000 hours, while a conventional bulb can burn out after 1,000-2,000 hours.
Chip structure: crystalline layers
LEDs are microstructural bodies, in which compound semiconductors are the most important component. Using AIXTRON’s technology, methods, and systems, they are produced in a highly complex process. The appropriate gases are deposited on a substrate material (wafer) in crystalline, atom-thick layers. These films influence the semiconductor’s conductive properties and are thus critical for the LED’s proper operation.
A wafer’s yield: up to 120,000 LED chips
A coated wafer that is 2 inches (5 cm) diameter can yield up to 15,000 LED chips; a 4-inch (10-cm) wafer can yield about 120,000 chips. The smallest LEDs have a surface area of 0.1 square millimeters, while larger “power” variants featuring a higher capacity have an area of 4 square millimeters.
AIXTRON®, AIXACT®, Atomic Level SolutionS®, Gas Foil Rotation®, OVPD®, Planetary Reactor®, TriJet®, Close Coupled Showerhead®, CRIUS®, PVPD®