Scientists from Tohoku University in Japan have developed a new type of energy-efficient flat light source based on carbon nanotubes with very low power consumption of around 0.1 Watt for every hour's operation -- about a hundred times lower than that of an LED.
The researchers detail the fabrication and optimization of the device, which is based on a phosphor screen and single-walled carbon nanotubes as electrodes in a diode structure. You can think of it as a field of tungsten filaments shrunk to microscopic proportions.
[EETimes] The lighting panel powered by carbon nanotube field emitters stimulating a phosphor to glow will be less expensive than light-emitting diode (LED) lighting and brighter than organic light emitting diode (OLED) panels, according to Prof. Norihiro Shimoi, lead researcher at Tohoku University in Japan.
So far, Shimoi's lab has demonstrated a prototype -- similar in design to a flat version of the cathode ray tubes (CRTs) of old -- that achieves the goal of low power but has yet to be optimized to reach 60 lumens per watt.
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"This prototype is designed as a lighting (illumination) lamp with very low power consumption of 1/100 against LED devices, and it will not be released until 2019," Shimoi told us.
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The researchers detail the fabrication and optimization of the device, which is based on a phosphor screen and single-walled carbon nanotubes as electrodes in a diode structure. You can think of it as a field of tungsten filaments shrunk to microscopic proportions.
[EETimes] The lighting panel powered by carbon nanotube field emitters stimulating a phosphor to glow will be less expensive than light-emitting diode (LED) lighting and brighter than organic light emitting diode (OLED) panels, according to Prof. Norihiro Shimoi, lead researcher at Tohoku University in Japan.
So far, Shimoi's lab has demonstrated a prototype -- similar in design to a flat version of the cathode ray tubes (CRTs) of old -- that achieves the goal of low power but has yet to be optimized to reach 60 lumens per watt.
"This prototype is designed as a lighting (illumination) lamp with very low power consumption of 1/100 against LED devices, and it will not be released until 2019," Shimoi told us.
Read more »
