Conservation Time: AIST develops low volatge inorganic EL device
With energy on the grind and the earth suffering, bulbs that glow using very little energy could be a big boost. AIST Japan has succeeded in developing such a lighting solution using a red inorganic EL device that uses low AC voltage of 10V. Compared with the present inorganic EL devices, the emission voltage of this device is 1/10 or even lesser. This device also facilitates a wider view angle with surface emission method, while reducing the size of the power supply.
The difference for this device lies in the usage of a perovskite-type oxide which forms each of the layers. This material is chemically stable and its properties do not deteriorate on oxidation or heat. As a consequence, the sealing process is shortened, which enables faster production.
All that is required is to stack this material with insulator thin films given the ability of such oxides to emit fluorescent lights on UV excitation. The thickness of the emission layer is obviously reduced because of these properties.
In future AIST wants to take advantage of this development by applying it to lighting equipment, lights sources and even displays. Before that application, AIST is keen to improve the luminance and increase the number of emission colors.
Via: Tech-on
