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Issue 11, 2013
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Efficient green-luminescent germanium nanocrystals

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Abstract

Highly efficient ‘deep-green’ luminescent germanium nanocrystals (Ge NCs) have been synthesized by a one-step laser ablation process. The NCs are thoroughly characterized by TEM, Raman and optical spectroscopic techniques. The relationship between the size and the emission is investigated through spectroscopic analyses to reveal the appearance of the quantum confinement effect. Due to the strong quantum confinement of photogenerated carriers in diamond cubic Ge NCs and well-controlled size distribution, both a full width half maxima (FWHM) of the photoluminescence (PL) (about 55 nm) and a 17% absolute PL quantum yield (QY) of the Ge NCs in thin film form are drastically improved.

Graphical abstract: Efficient green-luminescent germanium nanocrystals

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Publication details

The article was received on 26 Nov 2012, accepted on 11 Jan 2013 and first published on 11 Jan 2013


Article type: Paper
DOI: 10.1039/C3TA01246H
Citation: J. Mater. Chem. A, 2013,1, 3747-3751
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    Efficient green-luminescent germanium nanocrystals

    B. Ghosh, Y. Sakka and N. Shirahata, J. Mater. Chem. A, 2013, 1, 3747
    DOI: 10.1039/C3TA01246H

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