Carrier trapping and confinement in Ge nanocrystals surrounded by Ge3N4

We investigated the optical properties of Ge nanocrystals surrounded by Ge 3 N 4 . The broad emission ranging from infrared to blue is due to the dependence on the crystal size and preparation methods. Here, we report high resolution Photoluminescence (PL) attributed to emission from individual Ge n...

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Published in:Scientific reports 2016-05, Vol.6 (1), p.25449-25449, Article 25449
Main Authors: Park, Youngsin, Chan, Christopher C. S., Reid, Benjamin P. L., Nuttall, Luke, Taylor, Robert A., Lee, Nam-Suk, Lee, Young Mi
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Language:English
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639/766/1130/2799
639/766/94
Annealing
Crystals
Emissions
Energy
Humanities and Social Sciences
Laboratories
Luminescence
Microscopy
multidisciplinary
Nanocrystals
Optical properties
Photons
Science
Science (multidisciplinary)
Temperature effects
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cited_by cdi_FETCH-LOGICAL-c438t-91dcb1265bbeacd3dd5559c5f865aa1ed09dea6d92e35bc1748b3548131223ab3
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container_title Scientific reports
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creator Park, Youngsin
Chan, Christopher C. S.
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Taylor, Robert A.
Lee, Nam-Suk
Lee, Young Mi
description We investigated the optical properties of Ge nanocrystals surrounded by Ge 3 N 4 . The broad emission ranging from infrared to blue is due to the dependence on the crystal size and preparation methods. Here, we report high resolution Photoluminescence (PL) attributed to emission from individual Ge nanocrystals ( nc -Ge) spatially resolved using micro-photoluminescence and detailed using temperature and power-dependent photoluminescence studies. The measured peaks are shown to behave with excitonic characteristics and we argue that the spread of the nc -Ge peaks in the PL spectrum is due to different confinement energies arising from the variation in size of the nanocrystals.
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subjects 639/766/1130/2799
639/766/94
Annealing
Crystals
Emissions
Energy
Humanities and Social Sciences
Laboratories
Luminescence
Microscopy
multidisciplinary
Nanocrystals
Optical properties
Photons
Science
Science (multidisciplinary)
Temperature effects
title Carrier trapping and confinement in Ge nanocrystals surrounded by Ge3N4
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