Hierarchical nanostructuring of porous silicon with electrochemical and regenerative electroless etching

Research output: Contribution to journalArticlepeer-review

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Hierarchical nanostructuring of porous silicon with electrochemical and regenerative electroless etching. / Mäkilä, Ermei; Anton Willmore, Anne-mari; Yu, Haibo; Irri, Marianna; Aindow, Mark; Teesalu, Tambet; Canham, Leigh T.; Kolasinski, Kurt W.; Salonen, Jarno.

In: ACS Nano, Vol. 13, No. 11, 26.11.2019, p. 13056-13064.

Research output: Contribution to journalArticlepeer-review

Harvard

Mäkilä, E, Anton Willmore, A, Yu, H, Irri, M, Aindow, M, Teesalu, T, Canham, LT, Kolasinski, KW & Salonen, J 2019, 'Hierarchical nanostructuring of porous silicon with electrochemical and regenerative electroless etching', ACS Nano, vol. 13, no. 11, pp. 13056-13064. https://doi.org/10.1021/acsnano.9b05740

APA

Mäkilä, E., Anton Willmore, A., Yu, H., Irri, M., Aindow, M., Teesalu, T., Canham, L. T., Kolasinski, K. W., & Salonen, J. (2019). Hierarchical nanostructuring of porous silicon with electrochemical and regenerative electroless etching. ACS Nano, 13(11), 13056-13064. https://doi.org/10.1021/acsnano.9b05740

Vancouver

Mäkilä E, Anton Willmore A, Yu H, Irri M, Aindow M, Teesalu T et al. Hierarchical nanostructuring of porous silicon with electrochemical and regenerative electroless etching. ACS Nano. 2019 Nov 26;13(11):13056-13064. https://doi.org/10.1021/acsnano.9b05740

Author

Mäkilä, Ermei ; Anton Willmore, Anne-mari ; Yu, Haibo ; Irri, Marianna ; Aindow, Mark ; Teesalu, Tambet ; Canham, Leigh T. ; Kolasinski, Kurt W. ; Salonen, Jarno. / Hierarchical nanostructuring of porous silicon with electrochemical and regenerative electroless etching. In: ACS Nano. 2019 ; Vol. 13, No. 11. pp. 13056-13064.

Bibtex

@article{ec5633f4325443178b892e4324eabdac,
title = "Hierarchical nanostructuring of porous silicon with electrochemical and regenerative electroless etching",
abstract = "Hierarchically nanostructured silicon was produced by regenerative electroless etching (ReEtching) of Si powder made from pulverized anodized porous silicon. This material is characterized by ∼15 nm mesopores, into the walls of which tortuous 2–4 nm pores have been introduced. The walls are sufficiently narrow that they support quantum-confined crystallites that are photoluminescent. With suitable parameters, the ReEtching process also provides control over the emission color of the photoluminescence. Ball milling and hydrosilylation of this powder with undecylenic acid produces nanoparticles with hydrodynamic diameter of ∼220 nm that exhibit robust and bright luminescence that can be excited with either one ultraviolet/visible photon or two near-infrared photons. The long-lived, robust visible photoluminescence of these chemically passivated porous silicon nanoparticles is well-suited for bioimaging and theranostic applications.",
keywords = "porous silicon, two-photon fluorescence, photoluminescence, etching, hierarchical nanostructure, nanoparticle",
author = "Ermei M{\"a}kil{\"a} and {Anton Willmore}, Anne-mari and Haibo Yu and Marianna Irri and Mark Aindow and Tambet Teesalu and Canham, {Leigh T.} and Kolasinski, {Kurt W.} and Jarno Salonen",
year = "2019",
month = nov,
day = "26",
doi = "10.1021/acsnano.9b05740",
language = "English",
volume = "13",
pages = "13056--13064",
journal = "ACS Nano",
issn = "1936-0851",
publisher = "American Chemical Society",
number = "11",

}

RIS

TY - JOUR

T1 - Hierarchical nanostructuring of porous silicon with electrochemical and regenerative electroless etching

AU - Mäkilä, Ermei

AU - Anton Willmore, Anne-mari

AU - Yu, Haibo

AU - Irri, Marianna

AU - Aindow, Mark

AU - Teesalu, Tambet

AU - Canham, Leigh T.

AU - Kolasinski, Kurt W.

AU - Salonen, Jarno

PY - 2019/11/26

Y1 - 2019/11/26

N2 - Hierarchically nanostructured silicon was produced by regenerative electroless etching (ReEtching) of Si powder made from pulverized anodized porous silicon. This material is characterized by ∼15 nm mesopores, into the walls of which tortuous 2–4 nm pores have been introduced. The walls are sufficiently narrow that they support quantum-confined crystallites that are photoluminescent. With suitable parameters, the ReEtching process also provides control over the emission color of the photoluminescence. Ball milling and hydrosilylation of this powder with undecylenic acid produces nanoparticles with hydrodynamic diameter of ∼220 nm that exhibit robust and bright luminescence that can be excited with either one ultraviolet/visible photon or two near-infrared photons. The long-lived, robust visible photoluminescence of these chemically passivated porous silicon nanoparticles is well-suited for bioimaging and theranostic applications.

AB - Hierarchically nanostructured silicon was produced by regenerative electroless etching (ReEtching) of Si powder made from pulverized anodized porous silicon. This material is characterized by ∼15 nm mesopores, into the walls of which tortuous 2–4 nm pores have been introduced. The walls are sufficiently narrow that they support quantum-confined crystallites that are photoluminescent. With suitable parameters, the ReEtching process also provides control over the emission color of the photoluminescence. Ball milling and hydrosilylation of this powder with undecylenic acid produces nanoparticles with hydrodynamic diameter of ∼220 nm that exhibit robust and bright luminescence that can be excited with either one ultraviolet/visible photon or two near-infrared photons. The long-lived, robust visible photoluminescence of these chemically passivated porous silicon nanoparticles is well-suited for bioimaging and theranostic applications.

KW - porous silicon

KW - two-photon fluorescence

KW - photoluminescence

KW - etching

KW - hierarchical nanostructure

KW - nanoparticle

U2 - 10.1021/acsnano.9b05740

DO - 10.1021/acsnano.9b05740

M3 - Article

VL - 13

SP - 13056

EP - 13064

JO - ACS Nano

JF - ACS Nano

SN - 1936-0851

IS - 11

ER -