Title :
Surface plasmon enhanced GaN based light-emitting diodes by Ag/SiO2 nanoparticles
Author :
Shi-Chao Zhu ; Li-Xia Zhao ; Zhi-Guo Yu ; Xue-Jiao Sun ; Jun-Xi Wang ; Jin-Min Li
Author_Institution :
Inst. of Semicond., Beijing, China
Abstract :
The QW-SP coupled nanorod LED with Ag/SiO2 nanoparticals (Nps) was fabricated. From both the light emission and the transmission spectrum, the energy coupling effects have been verified. The PL intensity of SP coupled LED increased by 2.1 times compared with the reference sample, combined with a blue shift of 2 nm from 456 to 454 nm. Furthermore, the time resolved photoluminescence (TRPL) results also confirm that the QW-SP coupling can enhance the carrier spontaneous emission rate dramatically. Our finding gives an alternative solution to fabricate QW-SP coupled LEDs to realize both high-power and high-speed.
Keywords :
III-V semiconductors; gallium compounds; light emitting diodes; nanoparticles; photoluminescence; silicon compounds; silver; surface plasmons; wide band gap semiconductors; Ag-SiO2; GaN; PL intensity; QW-SP coupled nanorod LED; TRPL; carrier spontaneous emission rate; energy coupling effects; high-power; high-speed; light emission; light-emitting diodes; nanoparticles; surface plasmon; time resolved photoluminescence; transmission spectrum; Couplings; Gallium nitride; Light emitting diodes; Modulation; Photoluminescence; Plasmons; Spontaneous emission;
Conference_Titel :
Solid State Lighting (SSLCHINA), 2014 11th China International Forum on
Print_ISBN :
978-1-4799-6696-7
DOI :
10.1109/SSLCHINA.2014.7127232
