Article citationsMore>>

Tsai, C., Li, K.-H., Kinosky, D.S., Qian, R.-., Hsu, T.-C., Irby, J.T., et al. (1992) Correlation between Silicon Hydride Species and the Photoluminescence Intensity of Porous Silicon. Applied Physics Letters, 60, 1700-1702.
https://doi.org/10.1063/1.107190

has been cited by the following article:

• TITLE: Chemical Treatment after Annealing Enhances Photoluminescence from Porous Silicon

  AUTHORS: Masato Ohmukai, Kouichi Okada

  KEYWORDS: Porous Silicon, Thermal Annealing, Chemical Treatment, ESR Spectra, IR Spectra

  JOURNAL NAME: World Journal of Engineering and Technology, Vol.13 No.3, June 25, 2025

  ABSTRACT: A silicon wafer was anodized to form porous silicon and then annealed followed by a chemical treatment. Annealed porous silicon has little efficiency of photoluminescence. The chemical treatments yielded photoluminescence at around 850 nm. The IR and ESR spectra showed that annealing forms silicon oxide with Pb-center and a-center levels, which results in the suppression of photoluminescence. After the chemical treatment, silicon oxide was removed and the two kinds of centers are disappeared. It possibly enhanced the photoluminescent efficiency. Further chemical treatment showed a blue shift of the photoluminescence. These results well support a quantum effect and suggest that the two kinds of centers in oxide are a factor of suppressing photoluminescence.