Ultrafast charge dynamics in CuInS2 nanocrystal quantum dots

Musa Cadirci; Ombretta Masala; Nigel Pickett; David Binks

doi:10.1016/j.chemphys.2014.05.001

Ultrafast charge dynamics in CuInS2 nanocrystal quantum dots

Musa Cadirci, Ombretta Masala, Nigel Pickett, David Binks

Research output: Contribution to journal › Article › peer-review

Abstract

Colloidal CuInS2 quantum dots have been synthesised and characterised using absorption and photoluminescence spectroscopy, X-ray diffraction, inductive-coupled plasma atomic emission spectroscopy and thermogravimetric analysis. The ultrafast charge dynamics of these dots have been studied using transient absorption spectroscopy. Cooling of hot photo-generated carriers to the band edge occurred within 3-5 ps. Significant de-population of the band-edge was found to occur on a sub-nanosecond time-scale, and was attributed to hole-trapping. © 2014 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	60-65
Number of pages	5
Journal	Chemical Physics
Volume	438
DOIs	https://doi.org/10.1016/j.chemphys.2014.05.001
Publication status	Published - 25 Jun 2014

Keywords

Charge dynamics
CuInS2 nanocrystals
Femtosecond transient absorption
Quantum dots
Spectroscopy

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10.1016/j.chemphys.2014.05.001

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title = "Ultrafast charge dynamics in CuInS2 nanocrystal quantum dots",

abstract = "Colloidal CuInS2 quantum dots have been synthesised and characterised using absorption and photoluminescence spectroscopy, X-ray diffraction, inductive-coupled plasma atomic emission spectroscopy and thermogravimetric analysis. The ultrafast charge dynamics of these dots have been studied using transient absorption spectroscopy. Cooling of hot photo-generated carriers to the band edge occurred within 3-5 ps. Significant de-population of the band-edge was found to occur on a sub-nanosecond time-scale, and was attributed to hole-trapping. {\textcopyright} 2014 Elsevier B.V. All rights reserved.",

keywords = "Charge dynamics, CuInS2 nanocrystals, Femtosecond transient absorption, Quantum dots, Spectroscopy",

author = "Musa Cadirci and Ombretta Masala and Nigel Pickett and David Binks",

year = "2014",

month = jun,

day = "25",

doi = "10.1016/j.chemphys.2014.05.001",

language = "English",

volume = "438",

pages = "60--65",

journal = "Chemical Physics",

issn = "0301-0104",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Ultrafast charge dynamics in CuInS2 nanocrystal quantum dots

AU - Cadirci, Musa

AU - Masala, Ombretta

AU - Pickett, Nigel

AU - Binks, David

PY - 2014/6/25

Y1 - 2014/6/25

N2 - Colloidal CuInS2 quantum dots have been synthesised and characterised using absorption and photoluminescence spectroscopy, X-ray diffraction, inductive-coupled plasma atomic emission spectroscopy and thermogravimetric analysis. The ultrafast charge dynamics of these dots have been studied using transient absorption spectroscopy. Cooling of hot photo-generated carriers to the band edge occurred within 3-5 ps. Significant de-population of the band-edge was found to occur on a sub-nanosecond time-scale, and was attributed to hole-trapping. © 2014 Elsevier B.V. All rights reserved.

AB - Colloidal CuInS2 quantum dots have been synthesised and characterised using absorption and photoluminescence spectroscopy, X-ray diffraction, inductive-coupled plasma atomic emission spectroscopy and thermogravimetric analysis. The ultrafast charge dynamics of these dots have been studied using transient absorption spectroscopy. Cooling of hot photo-generated carriers to the band edge occurred within 3-5 ps. Significant de-population of the band-edge was found to occur on a sub-nanosecond time-scale, and was attributed to hole-trapping. © 2014 Elsevier B.V. All rights reserved.

KW - Charge dynamics

KW - CuInS2 nanocrystals

KW - Femtosecond transient absorption

KW - Quantum dots

KW - Spectroscopy

U2 - 10.1016/j.chemphys.2014.05.001

DO - 10.1016/j.chemphys.2014.05.001

M3 - Article

SN - 0301-0104

VL - 438

SP - 60

EP - 65

JO - Chemical Physics

JF - Chemical Physics

ER -

Ultrafast charge dynamics in CuInS2 nanocrystal quantum dots

Abstract

Keywords

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