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Pevtsov DN, Aybush AV, Gostev FE, Shelaev IV, Gadomska AV, Tovstun SA, Nadtochenko VA. Laser Flash Photolysis of Colloidal Indium Phosphide Quantum Dots. HIGH ENERGY CHEMISTRY 2022. [DOI: 10.1134/s0018143922050149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ganeev RA, Zvyagin AI, Shuklov IA, Spirin MG, Ovchinnikov OV, Razumov VF. Nonlinear Optical Characterization of InP@ZnS Core-Shell Colloidal Quantum Dots Using 532 nm, 10 ns Pulses. NANOMATERIALS 2021; 11:nano11061366. [PMID: 34064198 PMCID: PMC8224269 DOI: 10.3390/nano11061366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 05/13/2021] [Accepted: 05/15/2021] [Indexed: 11/16/2022]
Abstract
InP@ZnS core-shell colloidal quantum dots (CQDs) were synthesized and characterized using the z-scan technique. The nonlinear refraction and nonlinear absorption coefficients (γ = −2 × 10−12 cm2 W−1, β = 4 × 10−8 cm W−1) of these CQDs were determined using 10 ns, 532 nm pulses. The saturable absorption (β = −1.4 × 10−9 cm W−1, Isat = 3.7 × 108 W cm−2) in the 3.5 nm CQDs dominated at small intensities of the probe pulses (I ≤ 7 × 107 W cm−2) followed by reverse saturable absorption at higher laser intensities. We report the optical limiting studies using these CQDs showing the suppression of propagated nanosecond radiation in the intensity range of 8 × 107–2 × 109 W cm−2. The role of nonlinear scattering is considered using off-axis z-scan scheme, which demonstrated the insignificant role of this process along the whole range of used intensities of 532 nm pulses. We discuss the thermal nature of the negative nonlinear refraction in the studied species.
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Affiliation(s)
- Rashid A. Ganeev
- Department of Physics, Voronezh State University, 394006 Voronezh, Russia; (A.I.Z.); (O.V.O.)
- Laboratory for Photonics of Quantum Nanostructures, Moscow Institute of Physics and Technology (National Research University), 141701 Dolgoprudny, Russia; (M.G.S.); (V.F.R.)
- Institute of Astronomy, University of Latvia, 1586 Riga, Latvia
- Department of Physics, American University of Sharjah, Sharjah 26666, United Arab Emirates
- Correspondence: (R.A.G.); (I.A.S.)
| | - Andrey I. Zvyagin
- Department of Physics, Voronezh State University, 394006 Voronezh, Russia; (A.I.Z.); (O.V.O.)
| | - Ivan A. Shuklov
- Laboratory for Photonics of Quantum Nanostructures, Moscow Institute of Physics and Technology (National Research University), 141701 Dolgoprudny, Russia; (M.G.S.); (V.F.R.)
- Correspondence: (R.A.G.); (I.A.S.)
| | - Maksim G. Spirin
- Laboratory for Photonics of Quantum Nanostructures, Moscow Institute of Physics and Technology (National Research University), 141701 Dolgoprudny, Russia; (M.G.S.); (V.F.R.)
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia
| | - Oleg V. Ovchinnikov
- Department of Physics, Voronezh State University, 394006 Voronezh, Russia; (A.I.Z.); (O.V.O.)
| | - Vladimir F. Razumov
- Laboratory for Photonics of Quantum Nanostructures, Moscow Institute of Physics and Technology (National Research University), 141701 Dolgoprudny, Russia; (M.G.S.); (V.F.R.)
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia
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Tovstun SA, Ivanchikhina AV, Spirin MG, Martyanova EG, Razumov VF. Studying the size-selective precipitation of colloidal quantum dots by decomposing the excitation–emission matrix. J Chem Phys 2020; 153:084108. [DOI: 10.1063/5.0019151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Sergey A. Tovstun
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Acad. Semenov av. 1, Chernogolovka, Moscow Region 142432, Russia
- Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, Moscow Region 141701, Russia
| | - Anastasia V. Ivanchikhina
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Acad. Semenov av. 1, Chernogolovka, Moscow Region 142432, Russia
- Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, Moscow Region 141701, Russia
| | - Maxim G. Spirin
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Acad. Semenov av. 1, Chernogolovka, Moscow Region 142432, Russia
- Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, Moscow Region 141701, Russia
| | - Elena G. Martyanova
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Acad. Semenov av. 1, Chernogolovka, Moscow Region 142432, Russia
- Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, Moscow Region 141701, Russia
| | - Vladimir F. Razumov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Acad. Semenov av. 1, Chernogolovka, Moscow Region 142432, Russia
- Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, Moscow Region 141701, Russia
- Lomonosov Moscow State University, Lenin’s Hills, Moscow 119991, Russia
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Tovstun SA, Brichkin SB, Spirin MG, Gak VY, Razumov VF. Specifics of luminescence of nanoclusters consisting of InP@ZnS colloidal quantum dots stabilized by oleylamine. HIGH ENERGY CHEMISTRY 2017. [DOI: 10.1134/s0018143917060091] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gak VY, Tovstun SA, Spirin MG, Brichkin SB, Razumov VF. Influence of alkanethiols on fluorescence blinking of InP@ZnS colloidal quantum dots. HIGH ENERGY CHEMISTRY 2017. [DOI: 10.1134/s0018143917020047] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Tovstun SA. Estimation of confidence intervals in calculation of the distribution of luminescence lifetimes from the kinetics of multiexponential decay. HIGH ENERGY CHEMISTRY 2016. [DOI: 10.1134/s0018143916050179] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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