Question

NO Handwriting Please !

Will there be anything more efficient and better than LEDs? If so, how long will it be until that happens?

Answer 1

OLEDs are more efficient and better than LED.  OLED - Organic Light Emitting Diode. It is normally like LED in which the emisive electroluminescent layer is a film of organic compound that emits light in response to an electric current. This organic layer is situated between two electrodes, at least one of these electrodes is transparent.

OLEDs are brighter than LEDs. Because the organic layers of an OLEDs are much thinner than the corresponding inorganic crystal layers of an LED, the conductive and emissive layers of an OLEDs can be multi-layered. OLEDs do not require glass.

OLEDs are easier to produce and can be made to larger sizes. It is much more difficult to grow and lay down so many liquid crystals. Because OLEDs are essentially plastics, they can be made into large, thin sheets.

Lifetime - red and green OLED films have longer lifetimes are 46,000 to 230,000 hours and blue organic OLED are much shorter lifetimes up to around 14,000 hours. Manufacturing processes are expensive right now. Water can easily damage OLEDs.

Types of OLED's:-

1)Passive-matrix OLED

2)Transparent OLED

3)Active-matrix OLED

4 )Top-emittingOLED

5)White OLED

6)Foldable OLED

Principle:-

The basic principle is OLED emits light by conducting electricity to the organic materials that are sandwiched between the electrodes and LED emits light by conducting electricity to inorganic materials that are sandwiched between electrodes. OLED has an organic dye which consists of exciton states.

OLEDs are surface light source, diffused light, easy to dissipate heat and low intensity.

These are used in Televisions, Digital cameras, Mobile phones, Flexible displays, Flat panel displays.

OLEDs lighting today is mostly used in premium lighting fixtures and massive investments in production capacity will have to be made for prices to drop and for OLEDs to be able to compete with LED lighting.