TY  - CONF
AU  - Milosavljević, A.R.
AU  - Božanić, Dušan, K.
AU  - Danilović, Danijela
AU  - Sapkota, P.
AU  - Vukmirović, N.
AU  - Sadhu, S.
AU  - Dojčilović, Radovan
AU  - Huang, W.
AU  - Bozek, J.
AU  - Nicolas, C.
AU  - Nahon, Laurent
AU  - Ptasinska, S.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11858
AB  - We will describe a novel experimental technique that combines surface XPS and gas-phase synchrotron radiation-based XPS/VUV PES, for the investigation of the electronic structure of different nanocrystals that could be low-cost and high-efficient solar cell absorbers [1]. Surface XPS is performed in Notre Dame University (US) using SPECS Surface Nano Analysis GmbH, with a PHOIBOS 150 hemispherical energy analyzer. The synchrotron based XPS/PES is performed at the SOLEIL synchrotron (France). For gas-phase PES, the nanoparticle beam is produced by an atomizer and focused by the aerodynamic lens into the interaction region. On DESIRS beamline, the angle-resolved photoemission spectra were measured by double imaging DELICIOUS3 spectrometer (VMI for electrons and VMI-TOF for ions). On PLEIADES, the ±30o aperture wide-angle lens VG-Scienta R4000 electron analyzer was used to record the XPS. The nanoparticles are synthetized both at Vinca Institute of Nuclear Sciences (Serbia) and in Notre Dame. The experimental results are supported by DFT calculations performed at the Institute of Physics Belgrade (Serbia). Recent results for lead halide perovskites [1] will be presented, as well as preliminary results for lead-free materials such as Ag-Bi-I rudorffite nanosystems. The procedure to synthetize nanoparticles of this material for aerosol generation has been most recently developed at Vinca Institute of Nuclear Sciences. We were able to obtain a complete band alignment to the vacuum of the nanocrystals and investigate their surface properties with high sensitivity.
PB  - Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
T1  - Measuring electronic properties of free-standing nanocrystals for solar cell absorbers
SP  - 14
EP  - 14
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11858
ER  - 

@conference{
author = "Milosavljević, A.R. and Božanić, Dušan, K. and Danilović, Danijela and Sapkota, P. and Vukmirović, N. and Sadhu, S. and Dojčilović, Radovan and Huang, W. and Bozek, J. and Nicolas, C. and Nahon, Laurent and Ptasinska, S.",
year = "2019",
abstract = "We will describe a novel experimental technique that combines surface XPS and gas-phase synchrotron radiation-based XPS/VUV PES, for the investigation of the electronic structure of different nanocrystals that could be low-cost and high-efficient solar cell absorbers [1]. Surface XPS is performed in Notre Dame University (US) using SPECS Surface Nano Analysis GmbH, with a PHOIBOS 150 hemispherical energy analyzer. The synchrotron based XPS/PES is performed at the SOLEIL synchrotron (France). For gas-phase PES, the nanoparticle beam is produced by an atomizer and focused by the aerodynamic lens into the interaction region. On DESIRS beamline, the angle-resolved photoemission spectra were measured by double imaging DELICIOUS3 spectrometer (VMI for electrons and VMI-TOF for ions). On PLEIADES, the ±30o aperture wide-angle lens VG-Scienta R4000 electron analyzer was used to record the XPS. The nanoparticles are synthetized both at Vinca Institute of Nuclear Sciences (Serbia) and in Notre Dame. The experimental results are supported by DFT calculations performed at the Institute of Physics Belgrade (Serbia). Recent results for lead halide perovskites [1] will be presented, as well as preliminary results for lead-free materials such as Ag-Bi-I rudorffite nanosystems. The procedure to synthetize nanoparticles of this material for aerosol generation has been most recently developed at Vinca Institute of Nuclear Sciences. We were able to obtain a complete band alignment to the vacuum of the nanocrystals and investigate their surface properties with high sensitivity.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts",
title = "Measuring electronic properties of free-standing nanocrystals for solar cell absorbers",
pages = "14-14",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11858"
}

Milosavljević, A.R., Božanić, D. K., Danilović, D., Sapkota, P., Vukmirović, N., Sadhu, S., Dojčilović, R., Huang, W., Bozek, J., Nicolas, C., Nahon, L.,& Ptasinska, S.. (2019). Measuring electronic properties of free-standing nanocrystals for solar cell absorbers. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade., 14-14.
https://hdl.handle.net/21.15107/rcub_vinar_11858

Milosavljević A, Božanić DK, Danilović D, Sapkota P, Vukmirović N, Sadhu S, Dojčilović R, Huang W, Bozek J, Nicolas C, Nahon L, Ptasinska S. Measuring electronic properties of free-standing nanocrystals for solar cell absorbers. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts. 2019;:14-14.
https://hdl.handle.net/21.15107/rcub_vinar_11858 .

Milosavljević, A.R., Božanić, Dušan, K., Danilović, Danijela, Sapkota, P., Vukmirović, N., Sadhu, S., Dojčilović, Radovan, Huang, W., Bozek, J., Nicolas, C., Nahon, Laurent, Ptasinska, S., "Measuring electronic properties of free-standing nanocrystals for solar cell absorbers" in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts (2019):14-14,
https://hdl.handle.net/21.15107/rcub_vinar_11858 .

TY  - CHAP
AU  - Tomić, Stanko
AU  - Vukmirović, N.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12068
PB  - CRC Press (Taylor & Francis Group)
T2  - Handbook of Optoelectronic Device Modeling and Simulation : Fundamentals, Materials, Nanostructures, LEDs, and Amplifiers, Vol. 1
T1  - Quantum Dots
SP  - 417
EP  - 446
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12068
ER  - 

@inbook{
author = "Tomić, Stanko and Vukmirović, N.",
year = "2017",
publisher = "CRC Press (Taylor & Francis Group)",
journal = "Handbook of Optoelectronic Device Modeling and Simulation : Fundamentals, Materials, Nanostructures, LEDs, and Amplifiers, Vol. 1",
booktitle = "Quantum Dots",
pages = "417-446",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12068"
}

Tomić, S.,& Vukmirović, N.. (2017). Quantum Dots. in Handbook of Optoelectronic Device Modeling and Simulation : Fundamentals, Materials, Nanostructures, LEDs, and Amplifiers, Vol. 1
CRC Press (Taylor & Francis Group)., 417-446.
https://hdl.handle.net/21.15107/rcub_vinar_12068

Tomić S, Vukmirović N. Quantum Dots. in Handbook of Optoelectronic Device Modeling and Simulation : Fundamentals, Materials, Nanostructures, LEDs, and Amplifiers, Vol. 1. 2017;:417-446.
https://hdl.handle.net/21.15107/rcub_vinar_12068 .

Tomić, Stanko, Vukmirović, N., "Quantum Dots" in Handbook of Optoelectronic Device Modeling and Simulation : Fundamentals, Materials, Nanostructures, LEDs, and Amplifiers, Vol. 1 (2017):417-446,
https://hdl.handle.net/21.15107/rcub_vinar_12068 .

TY  - CHAP
AU  - Tomić, Stanko
AU  - Vukmirović, N.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12069
AB  - Our current understanding of the symmetries of multiband envelope function Hamiltonians for semiconductor quantum dots and their signatures in the energy level structure and wave function shapes is reviewed. We show how sym- metry can be used to block-diagonalize the Hamiltonian matrix and consequently strongly reduce the computational effort. A detailed analysis of symmetries of several different model Hamiltonians reveals that the true symmetry of square- based pyramidal quantum dots is captured if either the interface effects are taken into account or additional higher energy bands are included in the multiband Hamiltonian. This indicates that multiband envelope function methods are fully capable of capturing the true atomistic symmetry of quantum dots in contrast to some widespread beliefs. In addition, we show that translational symmetry can be artificially introduced by the numerical method used, such as the plane wave method. Plane wave method introduces artificial quantum dot replica whose charges interact with charges in the real quantum dot and create an additional strain field in the real dot. This issue can be circumvented by the introduction of proper corrections in the procedure for calculation of Coulomb integrals and strain.
PB  - Springer
T2  - Multi-Band Effective Mass Approximations
T1  - Symmetries in Multiband Hamiltonians for Semiconductor Quantum Dots
SP  - 87
EP  - 126
DO  - 10.1007/978-3-319-01427-2_3
ER  - 

@inbook{
author = "Tomić, Stanko and Vukmirović, N.",
year = "2014",
abstract = "Our current understanding of the symmetries of multiband envelope function Hamiltonians for semiconductor quantum dots and their signatures in the energy level structure and wave function shapes is reviewed. We show how sym- metry can be used to block-diagonalize the Hamiltonian matrix and consequently strongly reduce the computational effort. A detailed analysis of symmetries of several different model Hamiltonians reveals that the true symmetry of square- based pyramidal quantum dots is captured if either the interface effects are taken into account or additional higher energy bands are included in the multiband Hamiltonian. This indicates that multiband envelope function methods are fully capable of capturing the true atomistic symmetry of quantum dots in contrast to some widespread beliefs. In addition, we show that translational symmetry can be artificially introduced by the numerical method used, such as the plane wave method. Plane wave method introduces artificial quantum dot replica whose charges interact with charges in the real quantum dot and create an additional strain field in the real dot. This issue can be circumvented by the introduction of proper corrections in the procedure for calculation of Coulomb integrals and strain.",
publisher = "Springer",
journal = "Multi-Band Effective Mass Approximations",
booktitle = "Symmetries in Multiband Hamiltonians for Semiconductor Quantum Dots",
pages = "87-126",
doi = "10.1007/978-3-319-01427-2_3"
}

Tomić, S.,& Vukmirović, N.. (2014). Symmetries in Multiband Hamiltonians for Semiconductor Quantum Dots. in Multi-Band Effective Mass Approximations
Springer., 87-126.
https://doi.org/10.1007/978-3-319-01427-2_3

Tomić S, Vukmirović N. Symmetries in Multiband Hamiltonians for Semiconductor Quantum Dots. in Multi-Band Effective Mass Approximations. 2014;:87-126.
doi:10.1007/978-3-319-01427-2_3 .

Tomić, Stanko, Vukmirović, N., "Symmetries in Multiband Hamiltonians for Semiconductor Quantum Dots" in Multi-Band Effective Mass Approximations (2014):87-126,
https://doi.org/10.1007/978-3-319-01427-2_3 . .