Temperature-dependent photoluminescence spectroscopy of silicon nanowires grown via silver assisted chemical etching

Authors

  • Alexander De Los Reyes National Institute of Physics, University of the Philippines Diliman
  • Eloise Anguluan National Institute of Physics, University of the Philippines Diliman
  • John Daniel Vasquez National Institute of Physics, University of the Philippines Diliman
  • Joselito Muldera National Institute of Physics, University of the Philippines Diliman
  • Philippe Martin Tingzon National Institute of Physics, University of the Philippines Diliman
  • Arvin Mabilangan National Institute of Physics, University of the Philippines Diliman
  • Joseph Christopher Ragasa National Institute of Physics, University of the Philippines Diliman
  • Elmer Estacio National Institute of Physics, University of the Philippines Diliman
  • Arnel Salvador National Institute of Physics, University of the Philippines Diliman
  • Armando Somintac National Institute of Physics, University of the Philippines Diliman

Abstract

We investigate the temperature-dependence of the photoluminescence (PL) bands in silicon nanowires (SiNWs) grown via silver-assisted chemical etching. SINWs were grown from B-doped p-type (100) silicon substrates via silver-assisted chemical etching. Scanning electron micrographs confirmed the presence of SINWs approximately 3 microns in length. Temperature-dependent PL results revealed the presence of two peaks at E1 ≈ 1.88 eV and E2 ≈ 2.18 eV. These peaks do not obey the temperature dependence of semiconductors as suggested by the Varshni equation. Furthermore, anomalous thermal quenching was observed for several temperature values. In summary, we attribute the origin of these photoluminescence bands to defect sites in the Si/SiO2 interface rather than spatial confinement effects.

Proceedings 2015 SPP Cover

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Published

2015-06-03

Issue

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

Section

Poster Session PB

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All other associated economic and moral rights as granted by the Intellectual Property Code of the Philippines are maintained by the Authors.

How to Cite

[1]
“Temperature-dependent photoluminescence spectroscopy of silicon nanowires grown via silver assisted chemical etching”, Proc. SPP, vol. 33, no. 1, p. SPP-2015-PB-26, Jun. 2015, Accessed: Mar. 25, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/1232