Analysis of aluminum nano-gratings assisted light reflection reduction in GaAs metal-semiconductor-metal photodetectors

Zhenzhu Fan; Yahui Su; Huayong Zhang; Xiaohu Han; Feifei Ren

doi:10.1117/12.2186654

23 September 2015 Analysis of aluminum nano-gratings assisted light reflection reduction in GaAs metal-semiconductor-metal photodetectors

Zhenzhu Fan, Yahui Su, Huayong Zhang, Xiaohu Han, Feifei Ren

Author Affiliations +

Proceedings Volume 9563, Reliability of Photovoltaic Cells, Modules, Components, and Systems VIII; 95630T (2015) https://doi.org/10.1117/12.2186654
Event: SPIE Optics + Photonics for Sustainable Energy, 2015, San Diego, California, United States

Abstract

Plasmonics-based GaAs metal-semiconductor-metal photodetector (MSM-PD) with aluminum nano-gratings was proposed. A detailed numerical study of subwavelength nanogratings behavior to reduce the light reflection is performed by finite-difference time domain (FDTD) algorithm. The geometric parameters of nano-gratings, such as aperture width, the nano-gratings height, the duty cycles are optimized for subwavelength metal nanogratings on GaAs substrate and their impact on light reflection below the conventional MSM-PD is confirmed. Simulation results show that a light reflection factor around 15% can be obtained near the wavelength of 900 nm with optimized MSM-PDs, and in visible light spectrum, the Al nano-gratings show better performance than Au nano-gratings.

Citation Download Citation

Zhenzhu Fan, Yahui Su, Huayong Zhang, Xiaohu Han, and Feifei Ren "Analysis of aluminum nano-gratings assisted light reflection reduction in GaAs metal-semiconductor-metal photodetectors", Proc. SPIE 9563, Reliability of Photovoltaic Cells, Modules, Components, and Systems VIII, 95630T (23 September 2015); https://doi.org/10.1117/12.2186654

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