TITLE

High efficiency visible electroluminescence from silicon nanocrystals embedded in silicon nitride using a transparent doping layer

AUTHOR(S)
Kwan Sik Cho; Nae-Man Park; Tae-Youb Kim; Kyung-Hyun Kim; Gun Yong Sung; Shin, Jung H.
PUB. DATE
February 2005
SOURCE
Applied Physics Letters;2/14/2005, Vol. 86 Issue 7, p071909
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have fabricated light-emitting diodes with a transparent doping layer on silicon nanocrystals (nc-Si) embeded in silicon nitride matrix formed by plasma-enhanced chemical vapor deposition. Under forward biased condition, orange electroluminescence (EL) with its peak wavelength at about 600 nm was observed at room temperature. The peak position of the EL is very similar to that of the photoluminescence (PL) and the emitted EL intensity is proportional to the current density passing through the device. We suggest that the observed EL is originated from electron-hole pair recombination in nc-Si. By using indium tin oxide and n-type SiC layer combination as a transparent doping layer, we obtained high external quantum efficiency greater than 1.6%.
ACCESSION #
16581264

 

Related Articles

  • High peak luminance of molecularly dye-doped organic light-emitting diodes under intense voltage pulses. Wei, B.; Ichikawa, M.; Furukawa, K.; Koyama, T.; Taniguchi, Y. // Journal of Applied Physics;8/15/2005, Vol. 98 Issue 4, p044506 

    The performance and efficiency of molecularly doped organic light-emitting devices (OLEDs) using voltage pulses have been investigated. The maximum current density and peak luminance have been found to depend on the pulse duration and device size, which was attributed to the heat effect in...

  • Thermally stable luminescence of KSrPO4:Eu2+ phosphor for white light UV light-emitting diodes. Tang, Yu-Sheng; Hu, Shu-Fen; Lin, Chun Che; Bagkar, Nitin C.; Liu, Ru-Shi // Applied Physics Letters;4/9/2007, Vol. 90 Issue 15, p151108 

    A novel blue phosphor based on phosphate host matrix, KSrPO4 doped with Eu2+, was prepared by solid state reaction. The phosphor invariably emits blue luminescence with a peak wavelength at 424 nm under ultraviolet excitation at 360 nm. Eu2+-doped KSrPO4 phosphors show higher thermally stable...

  • Enhanced optical power and low forward voltage of GaN-based light-emitting diodes with Ga-doped ZnO transparent conducting layer. Tae-Young Park; Yong-Seok Choi; Jang-Won Kang; Jae-Ho Jeong; Seong-Ju Park; Dong Min Jeon; Je Won Kim; Yong Chun Kim // Applied Physics Letters;2/1/2010, Vol. 96 Issue 5, p051124 

    Ga-doped ZnO (ZnO:Ga) films were grown by metalorganic chemical vapor deposition as transparent conducting layers for GaN light-emitting diodes (LEDs). The forward voltage of LEDs with ZnO:Ga was 3.3 V at 20 mA. The low forward voltage was attributed to the removal of a resistive ZnGa2O4 phase,...

  • Electrically detected magnetic resonance investigations of gallium phosphide green light-emitting diodes. Reinacher, N. M.; Brandt, M. S.; Stutzmann, M. // Journal of Applied Physics;10/15/1996, Vol. 80 Issue 8, p4541 

    Presents information on a study that investigated the transport processes and degradation of GaP:N green light-emitting diodes using electrically detected magnetic response. Experimental procedure; Results and discussion on the study; Conclusions.

  • White organic light-emitting diode comprising of blue fluorescence and red phosphorescence. Qin, Dashan; Ye Tao // Applied Physics Letters;3/14/2005, Vol. 86 Issue 11, p113507 

    A white organic light-emitting diode with the structure of ITO/NPB 30 nm/TCTA+2% TPP 20 nm/BCP+0.4% Ir(piq)320 nm/Alq3 40 nm/Mg:Ag was fabricated and characterized, where 2,5,7,10-tetra-phenylpyrene and tris(1-phenylisoquinoline) iridium (III) [Ir(piq)3] were used as a blue fluorescent dye and a...

  • Efficiency measurement of GaN-based quantum well and light-emitting diode structures grown on silicon substrates. Zhu, Dandan; McAleese, Clifford; Häberlen, Maik; Salcianu, Carmen; Thrush, Ted; Kappers, Menno; Phillips, Andrew; Lane, Penelope; Kane, Michael; Wallis, David; Martin, Trevor; Astles, Mike; Hylton, Nicolas; Dawson, Phil; Humphreys, Colin // Journal of Applied Physics;Jan2011, Vol. 109 Issue 1, p014502 

    The optical efficiency of GaN-based multiple quantum well (MQW) and light emitting diode (LED) structures grown on Si(111) substrates by metal-organic vapor phase epitaxy was measured and compared with equivalent structures on sapphire. The crystalline quality of the LED structures was...

  • Incorporation of electroluminescence and electrochemiluminescence in one organic light-emitting device. Changgua Zhen; Yutao Chuai; Chunfeng Lao; Lan Huang; Dechun Zou; Do Nam Lee; Byeong Hyo Kim // Applied Physics Letters;8/29/2005, Vol. 87 Issue 9, p093508 

    The incorporation of electroluminescence and electrochemiluminescence in one light-emitting device with the configuration of indium tin oxide (ITO)/[Ru(bpy)2(dimbpy)](PF6)2/Alq3(30 nm)/NPB(45 nm)/Ag(60 nm) is investigated. When the ITO and Ag electrodes are negatively and positively biased...

  • Demonstration of a semipolar [formula] InGaN/GaN green light emitting diode. Sharma, R.; Pattison, P. M.; Masui, H.; Farrell, R. M.; Baker, T. J.; Haskell, B. A.; Wu, F.; DenBaars, S. P.; Speck, J. S.; Nakamura, S. // Applied Physics Letters;12/5/2005, Vol. 87 Issue 23, p231110 

    We demonstrate the growth and fabrication of a semipolar (1013) InGaN/GaN green (∼525 nm) light emitting diode (LED). The fabricated devices demonstrated a low turn-on voltage of 3.2 V and a series resistance of 14.3 Ω. Electroluminescence measurements on the semipolar LED yielded a...

  • Embodiment of the warm white-light-emitting diodes by using a Ba2+ codoped Sr3SiO5:Eu phosphor. Joung Kyu Park; Kyoung Jae Choi; Jeong Ho Yeon; Seung Jae Lee; Chang Hae Kim // Applied Physics Letters;1/23/2006, Vol. 88 Issue 4, p043511 

    The shifts of the emission band to longer wavelength (yellow-orange) of the Sr3SiO5:Eu yellow phosphor under the 450–470 nm excitation range have been achieved by adding the codoping element (Ba2+) in the host. In order to apply to white-light-emitting diodes (LEDs) with warm white and...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics