DOI: 10.1063/1.1289220. Photoacoustic and photoluminescence studies of porous silicon etched by low-concentration hydrofluoric acid

Photoacoustic and photoluminescence studies of porous silicon etched by low-concentration hydrofluoric acid

10.1063/1.1289220

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

We applied photoacoustic (PA), photoluminescence (PL), photoluminescence excitation (PLE), and atomic force microscopy (AFM) techniques on porous silicon (PS) layers to study the influence of chemical etching by low-concentration hydrofluoric acid. The chemical etching reveals the formation of PS layers of small dimensions by AFM observations, indicating the possibility of a strong quantum confinement effect. PA spectroscopy is useful to obtain the optical absorption characteristic for strongly scattering media such as PS and it helps to confirm the above speculation by indicating the blueshift of the fundamental absorption edge for the PS layer with chemical etching. PL spectroscopy also confirms the possibility of a quantum confinement effect by revealing the strong intensity and blueshift for the PS layer with chemical etching. PLE measurements suggest that the site for the radiative processes is different from that for the recombination of carriers and the PL of PS layers were dominated only by small crystallites in various size distributions.

Bibliography

Toyoda, T., Takahashi, T., & Shen, Q. (2000). Photoacoustic and photoluminescence studies of porous silicon etched by low-concentration hydrofluoric acid. Journal of Applied Physics, 88(11), 6444â6450.

Authors 3

T. Toyoda (first)
T. Takahashi (additional)
Q. Shen (additional)

References 29 Referenced 20

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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 9:59 a.m.)
Deposited	1 year, 6 months ago (Feb. 10, 2024, 12:19 p.m.)
Indexed	1 month, 3 weeks ago (July 8, 2025, 7:06 a.m.)
Issued	24 years, 9 months ago (Dec. 1, 2000)
Published	24 years, 9 months ago (Dec. 1, 2000)
Published Print	24 years, 9 months ago (Dec. 1, 2000)

Funders 0

None

BibTeX

@article{Toyoda_2000, title={Photoacoustic and photoluminescence studies of porous silicon etched by low-concentration hydrofluoric acid}, volume={88}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.1289220}, DOI={10.1063/1.1289220}, number={11}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Toyoda, T. and Takahashi, T. and Shen, Q.}, year={2000}, month=dec, pages={6444–6450} }

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