Addressing the exciton fine structure in colloidal nanocrystals: the case of CdSe nanoplatelets

被引：89

作者：

Shornikova, Elena V. ^{[1
,2
]}

Biadala, Louis ^{[1
,3
]}

Yakovlev, Dmitri R. ^{[1
,4
]}

Sapega, Victor F. ^{[4
]}

Kusrayev, Yuri G. ^{[4
]}

Mitioglu, Anatolie A. ^{[5
]}

Ballottin, Mariana V. ^{[5
]}

Christianen, Peter C. M. ^{[5
]}

Belykh, Vasilii V. ^{[1
,6
]}

Kochiev, Mikhail V. ^{[6
]}

Sibeldin, Nikolai N. ^{[6
]}

Golovatenko, Aleksandr A. ^{[4
]}

Rodina, Anna V. ^{[4
]}

Gippius, Nikolay A. ^{[7
]}

Kuntzmann, Alexis ^{[8
]}

Jiang, Ye ^{[8
]}

Nasilowski, Michel ^{[8
]}

Dubertret, Benoit ^{[8
]}

Bayer, Manfred ^{[1
,4
]}

机构：

[1] Tech Univ Dortmund, Expt Phys 2, D-44221 Dortmund, Germany

[2] Russian Acad Sci, Rzhanov Inst Semicond Phys, Siberian Branch, Novosibirsk 630090, Russia

[3] CNRS, Inst Elect Microelect & Nanotechnol, F-59652 Villeneuve Dascq, France

[4] Russian Acad Sci, Ioffe Inst, St Petersburg 194021, Russia

[5] Radboud Univ Nijmegen, High Field Magnet Lab HFML EMFL, NL-6525 ED Nijmegen, Netherlands

[6] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

[7] Skolkovo Inst Sci & Technol, Moscow 143026, Russia

[8] ESPCI, CNRS, Lab Phys & Etud Mat, F-75231 Paris, France

来源：

NANOSCALE | 2018年 / 10卷 / 02期

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

THRESHOLD STIMULATED-EMISSION; QUANTUM-WELLS; MAGNETIC POLARON; DARK-EXCITON; DOTS; RECOMBINATION; NANOSHEETS; THICKNESS; NANOSTRUCTURES; ABSORPTION;

D O I：

10.1039/c7nr07206f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We study the band-edge exciton fine structure and in particular its bright-dark splitting in colloidal semiconductor nanocrystals by four different optical methods based on fluorescence line narrowing and time-resolved measurements at various temperatures down to 2 K. We demonstrate that all these methods provide consistent splitting values and discuss their advances and limitations. Colloidal CdSe nanoplatelets with thicknesses of 3, 4 and 5 monolayers are chosen for experimental demonstrations. The bright-dark splitting of excitons varies from 3.2 to 6.0 meV and is inversely proportional to the nanoplatelet thickness. Good agreement between experimental and theoretically calculated size dependence of the bright-dark exciton splitting is achieved. The recombination rates of the bright and dark excitons and the bright to dark relaxation rate are measured by time-resolved techniques.

引用

页码：646 / 656

页数：11

共 70 条

[1] p-State Luminescence in CdSe Nanoplatelets: Role of Lateral Confinement and a Longitudinal Optical Phonon Bottleneck
Achtstein, Alexander W.
Scott, Riccardo
Kickhoefel, Sebastian
Jagsch, Stefan T.
Christodoulou, Sotirios
Bertrand, Guillaume H. V.
Prudnikau, Anatol V.
Antanovich, Artsiom
Artemyev, Mikhail
Moreels, Iwan
Schliwa, Andrei
Woggon, Ulrike
[J]. PHYSICAL REVIEW LETTERS, 2016, 116 (11)
[2] Linear Absorption in CdSe Nanoplates: Thickness and Lateral Size Dependency of the Intrinsic Absorption
Achtstein, Alexander W.
Antanovich, Artsiom
Prudnikau, Anatol
Scott, Riccardo
Woggon, Ulrike
Artemyev, Mikhail
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2015, 119 (34) : 20156 - 20161
[3] Highly efficient carrier multiplication in PbS nanosheets
Aerts, Michiel
Bielewicz, Thomas
Klinke, Christian
Grozema, Ferdinand C.
Houtepen, Arjan J.
Schins, Juleon M.
Siebbeles, Laurens D. A.
[J]. NATURE COMMUNICATIONS, 2014, 5
[4] Tight-binding calculations of image-charge effects in colloidal nanoscale platelets of CdSe
Benchamekh, R.
Gippius, N. A.
Even, J.
Nestoklon, M. O.
Jancu, J. -M.
Ithurria, S.
Dubertret, B.
Efros, Al. L.
Voisin, P.
[J]. PHYSICAL REVIEW B, 2014, 89 (03):
[5] Direct Observation of the Two Lowest Exciton Zero-Phonon Lines in Single CdSe/ZnS Nanocrystals
Biadala, L.
Louyer, Y.
Tamarat, Ph.
Lounis, B.
[J]. PHYSICAL REVIEW LETTERS, 2009, 103 (03)
[6] Biadala L, 2017, NAT NANOTECHNOL, V12, P569, DOI [10.1038/nnano.2017.22, 10.1038/NNANO.2017.22]
[7] Recombination Dynamics of Band Edge Excitons in Quasi-Two-Dimensional CdSe Nanoplatelets
Biadala, Louis
Liu, Feng
Tessier, Mickael D.
Yakovlev, Dmitri R.
Dubertret, Benoit
Bayer, Manfred
[J]. NANO LETTERS, 2014, 14 (03) : 1134 - 1139
[8] Synthesis of Zinc and Lead Chalcogenide Core and Core/Shell Nanoplatelets Using Sequential Cation Exchange Reactions
Bouet, Cecile
Laufer, Donatien
Mahler, Benoit
Nadal, Brice
Heuclin, Hadrien
Pedetti, Silvia
Patriarche, Gilles
Dubertret, Benoit
[J]. CHEMISTRY OF MATERIALS, 2014, 26 (09) : 3002 - 3008
[9] Nano-engineered electron-hole exchange interaction controls exciton dynamics in core-shell semiconductor nanocrystals
Brovelli, S.
Schaller, R. D.
Crooker, S. A.
Garcia-Santamaria, F.
Chen, Y.
Viswanatha, R.
Hollingsworth, J. A.
Htoon, H.
Klimov, V. I.
[J]. NATURE COMMUNICATIONS, 2011, 2
[10] Cardona M., 2005, LIGHT SCATTERING SOL, V51, P233

← 1 2 3 4 5 6 7 →