Fabrication of highly efficient full-color electroluminescent device composed of nanocrystalline silicon.
We fabricated a highly-efficient full-color electroluminescent device composed of nanocrystalline silicon (nc-Si). High luminance red, green and blue luminescence from the device was achieved by using hydrofluoric acid solution and oxidation techniques, because these techniques lead to reduction of both nc-Si size and P(b)-center on the surface, which is related closely to luminescent color and luminance, respectively. Moreover, direct current (DC) operating voltage on red/green/blue light emission of the device was realized at a relative low value below 10.0 V by controlling the thickness of the oxidized layer on the nc-Si surface. These results are a strong indication that the device developed in this study can be adapted to future flat panel display and illumination fields.
Sato
Keisuke
K
Department of Electronic and Computer Engineering, Tokyo Denki University, Ishizaka, Hatoyama, Hikigun, Saitama, 350-0394, Japan.
Hirakuri
Kenji
K
Iwase
Mitsuo
M
Izumi
Tomio
T
D003116:Color; D003460:Crystallization; D004560:Electricity; D004566:Electrodes; D006358:Hot Temperature; D006858:Hydrofluoric Acid / Q000494:pharmacology; D008027:Light; D049449:Luminescence; D036103:Nanotechnology / Q000379:methods*; D010084:Oxidation-Reduction; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties / Q000187:drug effects
D006858:Hydrofluoric Acid; D012825:Silicon