Fabrication and characterization of laterally - graded Distributed Bragg Reflector based on porous silicon

Authors

  • Maria Angela Faustino National Institute of Physics, University of the Philippines Diliman
  • Lorenzo Lopez National Institute of Physics, University of the Philippines Diliman
  • Michaelrey Cainglet National Institute of Physics, University of the Philippines Diliman
  • R.S. Oquias National Institute of Physics, University of the Philippines Diliman
  • A.I. Mabilangan 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

Laterally graded Distributed Bragg Reflector (DBR) based on porous silicon (PSi) was fabricated from 1cm x 3cm p-type silicon (100) in an HF ethanoic solution through electrochemical etching. The alternating layers were etched by varying the supplied anodic currents 15 mA and 90 mA with etch time of 42 sec. and 18 sec. respectively. Micrographs were also presented to confirm the alternating periodic layers produced as well as the lateral gradient on the substrates. The fabricated laterally graded DBR shows a maxima of reflection spectra from red to blue with maximum %reflectivities at 66.77 %, 81.16 %, 91.64 %, and 97.36 %. Simulation experiments were also presented to confirm the design of the experiment.

SPP 2012 Conference Proceedings cover

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Published

2012-10-22

Issue

2012: Proceedings of the 30th Samahang Pisika ng Pilipinas Physics Congress

Section

Poster Session PB

License

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Upon acceptance of their manuscript, the Authors further agree to grant SPP the non-exclusive, worldwide, and royalty-free rights to record, edit, copy, reproduce, publish, distribute, and use all or part of the manuscript for any purpose, in any media now existing or developed in the future, either individually or as part of a collection.
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]
“Fabrication and characterization of laterally - graded Distributed Bragg Reflector based on porous silicon”, Proc. SPP, vol. 30, no. 1, p. SPP2012-PB-4, Oct. 2012, Accessed: Mar. 25, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP2012-PB-4