Optical properties and electron dynamics in carbon nanodots

Xiaoming Wen; Shujuan Huang; Gavin Conibeer; Santosh Shrestha; Pyng Yu; Yon-Rui Toh; Jau Tang

doi:10.1117/12.2035308

Optical properties and electron dynamics in carbon nanodots

Xiaoming Wen, Shujuan Huang, Gavin Conibeer, Santosh Shrestha, Pyng Yu, Yon-Rui Toh, Jau Tang

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

Abstract

Carbon nanodots (CNDs) have emerged as fascinating materials with exceptional electronic and optical properties, and thus they offer promising applications in photonics, photovoltaics and photocatalysis. Herein we study the optical properties and electron dynamics in CNDs using steady state and time-resolved spectroscopy. The photoluminescence (PL) is determined to originate from both core and surface. The massive surface fluorophores result in a broad spectral fluorescence. In addition to various synthesis techniques, it is demonstrated that the PL of CNDs can be extended from the blue to the near infrared by thermal assisted growth. Directional electron transfer was observed as fast as femtosecond in CND-graphene oxide nanocomposites from CND into graphene oxide. These results suggest CNDs can be promising in many applications.

Original language	English
Title of host publication	Micro/Nano Materials, Devices, and Systems
Editors	James Friend, H. Hoe Tan
Place of Publication	Bellingham, WA
Publisher	SPIE
Pages	1-7
Number of pages	7
ISBN (Print)	9780819498144
DOIs	https://doi.org/10.1117/12.2035308
Publication status	Published - 2013
Externally published	Yes
Event	Micro/Nano Materials, Devices, and Systems - Melbourne, VIC, Australia Duration: 9 Dec 2013 → 11 Dec 2013

Publication series

Name	Proceedings of SPIE
Publisher	SPIE
Volume	8923
ISSN (Print)	0277-786X

Conference

Conference	Micro/Nano Materials, Devices, and Systems
Country/Territory	Australia
City	Melbourne, VIC
Period	9/12/13 → 11/12/13

Keywords

Carbon nanodots
electron dynamics
photoluminescence
ultrafast spectroscopy

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10.1117/12.2035308

Cite this

@inproceedings{23b092b20d034131868fb495f4138c69,

title = "Optical properties and electron dynamics in carbon nanodots",

abstract = "Carbon nanodots (CNDs) have emerged as fascinating materials with exceptional electronic and optical properties, and thus they offer promising applications in photonics, photovoltaics and photocatalysis. Herein we study the optical properties and electron dynamics in CNDs using steady state and time-resolved spectroscopy. The photoluminescence (PL) is determined to originate from both core and surface. The massive surface fluorophores result in a broad spectral fluorescence. In addition to various synthesis techniques, it is demonstrated that the PL of CNDs can be extended from the blue to the near infrared by thermal assisted growth. Directional electron transfer was observed as fast as femtosecond in CND-graphene oxide nanocomposites from CND into graphene oxide. These results suggest CNDs can be promising in many applications.",

keywords = "Carbon nanodots, electron dynamics, photoluminescence, ultrafast spectroscopy",

author = "Xiaoming Wen and Shujuan Huang and Gavin Conibeer and Santosh Shrestha and Pyng Yu and Yon-Rui Toh and Jau Tang",

year = "2013",

doi = "10.1117/12.2035308",

language = "English",

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series = "Proceedings of SPIE",

publisher = "SPIE",

pages = "1--7",

editor = "James Friend and Tan, {H. Hoe}",

booktitle = "Micro/Nano Materials, Devices, and Systems",

address = "United States",

note = "Micro/Nano Materials, Devices, and Systems ; Conference date: 09-12-2013 Through 11-12-2013",

}

Wen, X, Huang, S, Conibeer, G, Shrestha, S, Yu, P, Toh, Y-R & Tang, J 2013, Optical properties and electron dynamics in carbon nanodots. in J Friend & HH Tan (eds), Micro/Nano Materials, Devices, and Systems., 89231L, Proceedings of SPIE, vol. 8923, SPIE, Bellingham, WA, pp. 1-7, Micro/Nano Materials, Devices, and Systems, Melbourne, VIC, Australia, 9/12/13. https://doi.org/10.1117/12.2035308

Optical properties and electron dynamics in carbon nanodots. / Wen, Xiaoming; Huang, Shujuan; Conibeer, Gavin et al.
Micro/Nano Materials, Devices, and Systems. ed. / James Friend; H. Hoe Tan. Bellingham, WA: SPIE, 2013. p. 1-7 89231L (Proceedings of SPIE; Vol. 8923).

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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T1 - Optical properties and electron dynamics in carbon nanodots

AU - Wen, Xiaoming

AU - Huang, Shujuan

AU - Conibeer, Gavin

AU - Shrestha, Santosh

AU - Yu, Pyng

AU - Toh, Yon-Rui

AU - Tang, Jau

PY - 2013

Y1 - 2013

N2 - Carbon nanodots (CNDs) have emerged as fascinating materials with exceptional electronic and optical properties, and thus they offer promising applications in photonics, photovoltaics and photocatalysis. Herein we study the optical properties and electron dynamics in CNDs using steady state and time-resolved spectroscopy. The photoluminescence (PL) is determined to originate from both core and surface. The massive surface fluorophores result in a broad spectral fluorescence. In addition to various synthesis techniques, it is demonstrated that the PL of CNDs can be extended from the blue to the near infrared by thermal assisted growth. Directional electron transfer was observed as fast as femtosecond in CND-graphene oxide nanocomposites from CND into graphene oxide. These results suggest CNDs can be promising in many applications.

AB - Carbon nanodots (CNDs) have emerged as fascinating materials with exceptional electronic and optical properties, and thus they offer promising applications in photonics, photovoltaics and photocatalysis. Herein we study the optical properties and electron dynamics in CNDs using steady state and time-resolved spectroscopy. The photoluminescence (PL) is determined to originate from both core and surface. The massive surface fluorophores result in a broad spectral fluorescence. In addition to various synthesis techniques, it is demonstrated that the PL of CNDs can be extended from the blue to the near infrared by thermal assisted growth. Directional electron transfer was observed as fast as femtosecond in CND-graphene oxide nanocomposites from CND into graphene oxide. These results suggest CNDs can be promising in many applications.

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KW - electron dynamics

KW - photoluminescence

KW - ultrafast spectroscopy

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M3 - Conference proceeding contribution

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EP - 7

BT - Micro/Nano Materials, Devices, and Systems

A2 - Friend, James

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Y2 - 9 December 2013 through 11 December 2013

ER -

Optical properties and electron dynamics in carbon nanodots

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Keywords

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