Antireflection and light emission properties of silicon nanopyramids

Authors

Mark Jayson Felix ⋅ PH National Institute of Physics, University of the Philippines Diliman
Deborah Anne Lumantas ⋅ PH Institute of Mathematical Sciences and Physics, University of the Philippines Los Baños
Joselito Muldera ⋅ PH Institute of Electrical and Electronics Engineering, University of the Philippines Diliman
Armando Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman
Arnel Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Elmer Estacio ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

In this work, the antireflection and light emission properties of silicon nanopyramids (SiNPys) were studied via reflectivity and photoluminescence (PL) emission measurements. Arrays of disordered SiNPys were fabricated via anisotropic etching in an alkaline solution at room temperature. Enhancement of the orange-red light emission was observed from SiNPys etched for longer periods of time. The enhancement is ascribed to efficient light absorption induced by the nanopyramids and increased surface defects. This was supported from the decreased reflectivity from the pyramidal structures with further etching. The characteristic dimensions of the pyramidal structures were determined from the Scanning Electron Microscope (SEM) images. Results show the possibility of a relatively simple, low-cost, and robust route of integrating light-emitting and anti-reflecting nanostructures on silicon which is the platform of current electronic and optoelectronic devices.

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Issue

2015: Proceedings of the 33rd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2015-3A-02

Section

Photonics and Terahertz, Optics and Signal Processing

Published

2015-06-03

How to Cite

[1]

MJ Felix, DA Lumantas, J Muldera, A Somintac, A Salvador, and E Estacio, Antireflection and light emission properties of silicon nanopyramids, Proceedings of the Samahang Pisika ng Pilipinas 33, SPP-2015-3A-02 (2015). URL: https://proceedings.spp-online.org/article/view/1129.