We investigate the buildup of strain in InP quantum dots with the addition of shells of the lower-lattice constant materials ZnSe and ZnS by Raman spectroscopy. Both materials induce compressive strain in the core, which increases with increasing shell volume. We observe a difference in the shell behavior between the two materials: the thickness-dependence points toward an influence of the material stiffness. ZnS has a larger Young’s modulus and requires less material to develop stress on the InP lattice at the interface, while ZnSe requires several layers to form a stress-inducing lattice at the interface. This hints at the material stiffness being an additional parameter of relevance for designing strained core/shell quantum dots.
REFERENCES
1.
Y.
Yang
, Y.
Zheng
, W.
Cao
, A.
Titov
, J.
Hyvonen
, J. R.
Manders
, J.
Xue
, P. H.
Holloway
, and L.
Qian
, “High-efficiency light-emitting devices based on quantum dots with tailored nanostructures
,” Nat. Photonics
9
(4
), 259
–266
(2015
).2.
J. M.
Pietryga
, Y.-S.
Park
, J.
Lim
, A. F.
Fidler
, W. K.
Bae
, S.
Brovelli
, and V. I.
Klimov
, “Spectroscopic and device aspects of nanocrystal quantum dots
,” Chem. Rev.
116
(18
), 10513
–10622
(2016
).3.
T.
Shen
, L.
Bian
, B.
Li
, K.
Zheng
, T.
Pullerits
, and J.
Tian
, “A structure of CdS/CuxS quantum dots sensitized solar cells
,” Appl. Phys. Lett.
108
(21
), 213901
(2016
).4.
Z.
Yang
, M.
Gao
, W.
Wu
, X.
Yang
, X. W.
Sun
, J.
Zhang
, H.-C.
Wang
, R.-S.
Liu
, C.-Y.
Han
, H.
Yang
, and W.
Li
, “Recent advances in quantum dot-based light-emitting devices: Challenges and possible solutions
,” Mater. Today
24
, 69
–93
(2019
).5.
D. V.
Talapin
, J.-S.
Lee
, M. V.
Kovalenko
, and E. V.
Shevchenko
, “Prospects of colloidal nanocrystals for electronic and optoelectronic applications
,” Chem. Rev.
110
(1
), 389
–458
(2010
).6.
R.
Xie
, D.
Battaglia
, and X.
Peng
, “Colloidal InP nanocrystals as efficient emitters covering blue to near-infrared
,” J. Am. Chem. Soc.
129
(50
), 15432
–15433
(2007
).7.
P.
Reiss
, M.
Protière
, and L.
Li
, “Core/shell semiconductor nanocrystals
,” Small
5
(2
), 154
–168
(2009
).8.
V.
Brunetti
, H.
Chibli
, R.
Fiammengo
, A.
Galeone
, M. A.
Malvindi
, G.
Vecchio
, R.
Cingolani
, J. L.
Nadeau
, and P. P.
Pompa
, “InP/ZnS as a safer alternative to CdSe/ZnS core/shell quantum dots: In vitro and in vivo toxicity assessment
,” Nanoscale
5
(1
), 307
–317
(2012
).9.
S. J.
Soenen
, B. B.
Manshian
, T.
Aubert
, U.
Himmelreich
, J.
Demeester
, S. C.
De Smedt
, Z.
Hens
, and K.
Braeckmans
, “Cytotoxicity of cadmium-free quantum dots and their use in cell bioimaging
,” Chem. Res. Toxicol.
27
(6
), 1050
–1059
(2014
).10.
K.
Gong
and D. F.
Kelley
, “A predictive model of shell morphology in CdSe/CdS core/shell quantum dots
,” J. Chem. Phys.
141
(19
), 194704
(2014
).11.
A. M.
Smith
, A. M.
Mohs
, and S.
Nie
, “Tuning the optical and electronic properties of colloidal nanocrystals by lattice strain
,” Nat. Nanotechnol.
4
(1
), 56
–63
(2009
).12.
C.
Phadnis
, K. G.
Sonawane
, A.
Hazarika
, and S.
Mahamuni
, “Strain-induced hierarchy of energy levels in CdS/ZnS nanocrystals
,” J. Phys. Chem.
119
(42
), 24165
–24173
(2015
).13.
V.
Kocevski
, O.
Eriksson
, C.
Gerard
, D. D.
Sarma
, and J.
Rusz
, “Influence of dimensionality and interface type on optical and electronic properties of CdS/ZnS core-shell nanocrystals—A first-principles study
,” J. Chem. Phys.
143
(16
), 164701
(2015
).14.
F.
Pietra
, L.
De Trizio
, A. W.
Hoekstra
, N.
Renaud
, M.
Prato
, F. C.
Grozema
, P. J.
Baesjou
, R.
Koole
, L.
Manna
, and A. J.
Houtepen
, “Tuning the lattice parameter of InXZnYP for highly luminescent lattice-matched core/shell quantum dots
,” ACS Nano
10
(4
), 4754
–4762
(2016
).15.
M.
Rafipoor
, D.
Dupont
, H.
Tornatzky
, M. D.
Tessier
, J.
Maultzsch
, Z.
Hens
, and H.
Lange
, “Strain engineering in InP/(Zn,Cd)Se core/shell quantum dots
,” Chem. Mater.
30
(13
), 4393
–4400
(2018
).16.
A. V.
Baranov
, Y. P.
Rakovich
, J. F.
Donegan
, T. S.
Perova
, R. A.
Moore
, D. V.
Talapin
, A. L.
Rogach
, Y.
Masumoto
, and I.
Nabiev
, “Effect of ZnS shell thickness on the phonon spectra in CdSe quantum dots
,” Phys. Rev. B
68
(16
), 165306
(2003
).17.
N.
Tschirner
, H.
Lange
, A.
Schliwa
, A.
Biermann
, C.
Thomsen
, K.
Lambert
, R.
Gomes
, and Z.
Hens
, “Interfacial alloying in CdSe/CdS heteronanocrystals: A Raman spectroscopy analysis
,” Chem. Mater.
24
(2
), 311
–318
(2012
).18.
M. J.
Seong
, O. I.
Mićić
, A. J.
Nozik
, A.
Mascarenhas
, and H. M.
Cheong
, “Size-dependent Raman study of InP quantum dots
,” Appl. Phys. Lett.
82
(2
), 185
–187
(2003
).19.
V. M.
Dzhagan
, M.
Ya Valakh
, A. E.
Raevskaya
, A. L.
Stroyuk
, S.
Ya Kuchmiy
, and D. R. T.
Zahn
, “Resonant Raman scattering study of CdSe nanocrystals passivated with CdS and ZnS
,” Nanotechnology
18
(28
), 285701
(2007
).20.
A.
Biermann
, T.
Aubert
, P.
Baumeister
, E.
Drijvers
, Z.
Hens
, and J.
Maultzsch
, “Interface formation during silica encapsulation of colloidal CdSe/CdS quantum dots observed by in situ Raman spectroscopy
,” J. Chem. Phys.
146
(13
), 134708
(2017
).21.
M. D.
Tessier
, D.
Dupont
, K.
De Nolf
, J.
De Roo
, and Z.
Hens
, “Economic and size-tunable synthesis of InP/ZnE (E = S, Se) colloidal quantum dots
,” Chem. Mater.
27
(13
), 4893
–4898
(2015
).22.
M.
Dimitrievska
, H.
Xie
, A. J.
Jackson
, X.
Fontané
, M.
Espíndola-Rodríguez
, E.
Saucedo
, A.
Pérez-Rodríguez
, A.
Walsh
, and V.
Izquierdo-Roca
, “Resonant Raman scattering of ZnSXSe1−X solid solutions: The role of S and Se electronic states
,” Phys. Chem. Chem. Phys.
18
(11
), 7632
–7640
(2016
).23.
M.
Shakir
, S. K.
Kushwaha
, K. K.
Maurya
, G.
Bhagavannarayana
, and M. A.
Wahab
, “Characterization of ZnSe nanoparticles synthesized by microwave heating process
,” Solid State Commun.
149
(45
), 2047
–2049
(2009
).24.
R. K.
Ram
, S. S.
Kushwaha
, and A.
Shukla
, “Phonon assignments in II-VI and III-V semiconductor compounds having zincblende-type structure
,” Phys. Status Solidi (b)
154
(2
), 553
–564
(1989
).25.
Light Scattering in Solids IV
, edited by M.
Cardona
and G.
Güntherodt
(Springer Berlin Heidelberg
, 1984
).26.
G.
Scamarcio
, M.
Lugará
, and D.
Manno
, “Size-dependent lattice contraction in CdS1−xSex nanocrystals embedded in glass observed by Raman scattering
,” Phys. Rev. B
45
(23
), 13792
–13795
(1992
).27.
R.
Trommer
, H.
Müller
, M.
Cardona
, and P.
Vogl
, “Dependence of the phonon spectrum of InP on hydrostatic pressure
,” Phys. Rev. B
21
(10
), 4869
–4878
(1980
).28.
R. M.
Feenstra
and S. W.
Hla
. 2.3.12 InP, Indium Phosphide
(Springer Berlin Heidelberg
, 2015
).29.
V. M.
Dzhagan
, M. Y.
Valakh
, A. G.
Milekhin
, N. A.
Yeryukov
, D. R. T.
Zahn
, E.
Cassette
, T.
Pons
, and B.
Dubertret
, “Raman- and IR-active phonons in CdSe/CdS core/shell nanocrystals in the presence of interface alloying and strain
,” J. Phys. Chem.
117
(35
), 18225
–18233
(2013
).30.
L.
Lu
, X.-L.
Xu
, W.-T.
Liang
, and H.-F.
Lu
, “Raman analysis of CdSe/CdS core-shell quantum dots with different CdS shell thickness
,” J. Phys.: Condens. Matter
19
(40
), 406221
(2007
).31.
V. M.
Dzhagan
, Y. M.
Azhniuk
, A. G.
Milekhin
, and D. R. T.
Zahn
, “Vibrational spectroscopy of compound semiconductor nanocrystals
,” J. Phys. D: Appl. Phys.
51
(50
), 503001
(2018
).32.
Zinc Sulfide (ZnS) Third-Order Elastic Constants, Young’s Modulus, Poisson’s Ratio, Grueneisen Parameters
, edited by O.
Madelung
, U.
Rössler
, and M.
Schulz
(Springer Berlin Heidelberg
, Berlin, Heidelberg
, 1999
).33.
Indium Phosphide (InP) Lattice Parameters, Thermal Expansion
, edited by O.
Madelung
, U.
Rössler
, and M.
Schulz
(Springer Berlin Heidelberg
, Berlin, Heidelberg
, 2001
).34.
B.
Budiansky
, “On the elastic moduli of some heterogeneous materials
,” J. Mech. Phys. Solids
13
(4
), 223
–227
(1965
).35.
Z.-Q.
Wang
, Y.-P.
Zhao
, and Z.-P.
Huang
, “The effects of surface tension on the elastic properties of nano structures
,” Int. J. Eng. Sci.
48
(2
), 140
–150
(2010
).36.
U.
Rössler
, ZnS: Lattice Parameters
(Springer Berlin Heidelberg
, Berlin, Heidelberg
, 2013
).37.
D.
Strauch
, CdSe: Bulk Modulus, Compressibility: Datasheet from Landolt-Börnstein - Group III Condensed Matter
(Springer Berlin Heidelberg
, Berlin, Heidelberg
, 2012
).© 2019 Author(s).
2019
Author(s)
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