Internal quantum efficiency enhancement of GaInN/GaN quantum-well structures using Ag nanoparticles | Zendy

Daisuke Iida | Zendy; Ahmed Fadil | Zendy; Yuntian Chen | Zendy; Ou Y | Zendy; Oleksii Kopylov | Zendy; Motoaki Iwaya | Zendy; Tetsuya Takeuchi | Zendy; Satoshi Kamiyama | Zendy; Isamu Akasaki | Zendy; Haiyan Ou | Zendy

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Internal quantum efficiency enhancement of GaInN/GaN quantum-well structures using Ag nanoparticles

Author(s) -

Daisuke Iida,

Ahmed Fadil,

Yuntian Chen,

Ou Y,

Oleksii Kopylov,

Motoaki Iwaya,

Tetsuya Takeuchi,

Satoshi Kamiyama,

Isamu Akasaki,

Haiyan Ou

Publication year - 2015

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4931948

Subject(s) - quantum efficiency , photoluminescence , materials science , quantum , optoelectronics , excitation , power density , condensed matter physics , physics , power (physics) , thermodynamics , quantum mechanics

We report internal quantum efficiency enhancement of thin p-GaN green quantum-well structure using self-assembled Ag nanoparticles. Temperature dependent photoluminescence measurements are conducted to determine the internal quantum efficiency. The impact of excitation power density on the enhancement factor is investigated. We obtain an internal quantum efficiency enhancement by a factor of 2.3 at 756 W/cm2, and a factor of 8.1 at 1 W/cm2. A Purcell enhancement up to a factor of 26 is estimated by fitting the experimental results to a theoretical model for the efficiency enhancement factor

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