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Light absorption coefficient of CsPbBr3 perovskite nanocrystals

Jorick Maes (UGent) , Lieve Balcaen (UGent) , Emile Drijvers (UGent) , Qiang Zhao, Jonathan De Roo (UGent) , André Vantomme, Frank Vanhaecke (UGent) , Pieter Geiregat (UGent) and Zeger Hens (UGent)
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Abstract
Inductively coupled plasma mass spectrometry (ICP-MS) was combined with UV−vis absorption spectroscopy and transmission electron microscopy to determine the size, composition, and intrinsic absorption coefficient μi of 4 to 11 nm sized colloidal CsPbBr3 nanocrystals (NCs). The ICP-MS measurements demonstrate the nonstoichiometric nature of the NCs, with a systematic excess of lead for all samples studied. Rutherford backscattering measurements indicate that this enrichment in lead concurs with a relative increase in the bromide content. At high photon energies, μi is independent of the nanocrystal size. This allows the nanocrystal concentration in CsPbBr3 nanocolloids to be readily obtained by a combination of absorption spectroscopy and the CsPbBr3 sizing curve.
Keywords
COLLOIDAL CSPBX3 X, QUANTUM DOTS, SEMICONDUCTOR NANOCRYSTALS, CROSS-SECTION, EMISSION, SURFACE, SIZE, BR, NANOPARTICLES, LIGANDS

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MLA
Maes, Jorick et al. “Light Absorption Coefficient of CsPbBr3 Perovskite Nanocrystals.” JOURNAL OF PHYSICAL CHEMISTRY LETTERS 9.11 (2018): 3093–3097. Print.
APA
Maes, Jorick, Balcaen, L., Drijvers, E., Zhao, Q., De Roo, J., Vantomme, A., Vanhaecke, F., et al. (2018). Light absorption coefficient of CsPbBr3 perovskite nanocrystals. JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 9(11), 3093–3097.
Chicago author-date
Maes, Jorick, Lieve Balcaen, Emile Drijvers, Qiang Zhao, Jonathan De Roo, André Vantomme, Frank Vanhaecke, Pieter Geiregat, and Zeger Hens. 2018. “Light Absorption Coefficient of CsPbBr3 Perovskite Nanocrystals.” Journal of Physical Chemistry Letters 9 (11): 3093–3097.
Chicago author-date (all authors)
Maes, Jorick, Lieve Balcaen, Emile Drijvers, Qiang Zhao, Jonathan De Roo, André Vantomme, Frank Vanhaecke, Pieter Geiregat, and Zeger Hens. 2018. “Light Absorption Coefficient of CsPbBr3 Perovskite Nanocrystals.” Journal of Physical Chemistry Letters 9 (11): 3093–3097.
Vancouver
1.
Maes J, Balcaen L, Drijvers E, Zhao Q, De Roo J, Vantomme A, et al. Light absorption coefficient of CsPbBr3 perovskite nanocrystals. JOURNAL OF PHYSICAL CHEMISTRY LETTERS. 2018;9(11):3093–7.
IEEE
[1]
J. Maes et al., “Light absorption coefficient of CsPbBr3 perovskite nanocrystals,” JOURNAL OF PHYSICAL CHEMISTRY LETTERS, vol. 9, no. 11, pp. 3093–3097, 2018.
@article{8563119,
  abstract     = {Inductively coupled plasma mass spectrometry (ICP-MS) was combined with UV−vis absorption spectroscopy and transmission electron microscopy to determine the size, composition, and intrinsic absorption coefficient μi of 4 to 11 nm sized colloidal CsPbBr3 nanocrystals (NCs). The ICP-MS measurements demonstrate the nonstoichiometric nature of the NCs, with a systematic excess of lead for all samples studied. Rutherford backscattering measurements indicate that this enrichment in lead concurs with a relative increase in the bromide content. At high photon energies, μi is independent of the nanocrystal size. This allows the nanocrystal concentration in CsPbBr3 nanocolloids to be readily obtained by a combination of absorption spectroscopy and the CsPbBr3 sizing curve.},
  author       = {Maes, Jorick and Balcaen, Lieve and Drijvers, Emile and Zhao, Qiang and De Roo, Jonathan and Vantomme, André and Vanhaecke, Frank and Geiregat, Pieter and Hens, Zeger},
  issn         = {1948-7185},
  journal      = {JOURNAL OF PHYSICAL CHEMISTRY LETTERS},
  keywords     = {COLLOIDAL CSPBX3 X,QUANTUM DOTS,SEMICONDUCTOR NANOCRYSTALS,CROSS-SECTION,EMISSION,SURFACE,SIZE,BR,NANOPARTICLES,LIGANDS},
  language     = {eng},
  number       = {11},
  pages        = {3093--3097},
  title        = {Light absorption coefficient of CsPbBr3 perovskite nanocrystals},
  url          = {http://dx.doi.org/10.1021/acs.jpclett.8b01065},
  volume       = {9},
  year         = {2018},
}

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