Sapkota, Pitambar

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  • Sapkota, Pitambar (2)
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Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets

Danilović, Danijela; Milosavljević, Aleksandar R.; Sapkota, Pitambar; Dojčilović, Radovan; Tošić, Dragana; Vukmirović, Nenad; Jocić, Milan; Đoković, Vladimir; Ptasinska, Sylwia; Božanić, Dušan K.

(2022)

TY  - JOUR
AU  - Danilović, Danijela
AU  - Milosavljević, Aleksandar R.
AU  - Sapkota, Pitambar
AU  - Dojčilović, Radovan
AU  - Tošić, Dragana
AU  - Vukmirović, Nenad
AU  - Jocić, Milan
AU  - Đoković, Vladimir
AU  - Ptasinska, Sylwia
AU  - Božanić, Dušan K.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10402
AB  - Silver–bismuth iodide (Ag–Bi–I) rudorffites are chemically stable and non-toxic materials that can act as a possible lead-free replacement for methylammonium lead halides in optoelectronic applications. We report on a simple route for fabricating Ag–Bi–I colloidal nanoplatelets approximately 160 nm in lateral dimensions and 1–8 nm in thickness via exfoliation of Ag–Bi–I rudorffite powders in acetonitrile. The valence band electronic structure of isolated Ag–Bi–I nanoplatelets was investigated using synchrotron radiation to perform X-ray aerosol photoelectron spectroscopy (XAPS). The ionization energy of the material was found to be 6.1 ± 0.2 eV with respect to the vacuum level. UV–vis absorption and photoluminescence spectroscopies of the Ag–Bi–I colloids showed that the optical properties of the nanoplatelets originate from I 5p to Bi 6p and I 5p to I 5p transitions, which is further confirmed by density functional theory (DFT) calculations. Finally, calculations based on the DFT and k · p theoretical methods showed that the quantum confinement effect is very weak in the system studied.
T2  - The Journal of Physical Chemistry C
T1  - Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets
VL  - 126
IS  - 32
SP  - 13739
EP  - 13747
DO  - 10.1021/acs.jpcc.2c03208
ER  - 
@article{
author = "Danilović, Danijela and Milosavljević, Aleksandar R. and Sapkota, Pitambar and Dojčilović, Radovan and Tošić, Dragana and Vukmirović, Nenad and Jocić, Milan and Đoković, Vladimir and Ptasinska, Sylwia and Božanić, Dušan K.",
year = "2022",
abstract = "Silver–bismuth iodide (Ag–Bi–I) rudorffites are chemically stable and non-toxic materials that can act as a possible lead-free replacement for methylammonium lead halides in optoelectronic applications. We report on a simple route for fabricating Ag–Bi–I colloidal nanoplatelets approximately 160 nm in lateral dimensions and 1–8 nm in thickness via exfoliation of Ag–Bi–I rudorffite powders in acetonitrile. The valence band electronic structure of isolated Ag–Bi–I nanoplatelets was investigated using synchrotron radiation to perform X-ray aerosol photoelectron spectroscopy (XAPS). The ionization energy of the material was found to be 6.1 ± 0.2 eV with respect to the vacuum level. UV–vis absorption and photoluminescence spectroscopies of the Ag–Bi–I colloids showed that the optical properties of the nanoplatelets originate from I 5p to Bi 6p and I 5p to I 5p transitions, which is further confirmed by density functional theory (DFT) calculations. Finally, calculations based on the DFT and k · p theoretical methods showed that the quantum confinement effect is very weak in the system studied.",
journal = "The Journal of Physical Chemistry C",
title = "Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets",
volume = "126",
number = "32",
pages = "13739-13747",
doi = "10.1021/acs.jpcc.2c03208"
}
Danilović, D., Milosavljević, A. R., Sapkota, P., Dojčilović, R., Tošić, D., Vukmirović, N., Jocić, M., Đoković, V., Ptasinska, S.,& Božanić, D. K.. (2022). Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets. in The Journal of Physical Chemistry C, 126(32), 13739-13747.
https://doi.org/10.1021/acs.jpcc.2c03208
Danilović D, Milosavljević AR, Sapkota P, Dojčilović R, Tošić D, Vukmirović N, Jocić M, Đoković V, Ptasinska S, Božanić DK. Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets. in The Journal of Physical Chemistry C. 2022;126(32):13739-13747.
doi:10.1021/acs.jpcc.2c03208 .
Danilović, Danijela, Milosavljević, Aleksandar R., Sapkota, Pitambar, Dojčilović, Radovan, Tošić, Dragana, Vukmirović, Nenad, Jocić, Milan, Đoković, Vladimir, Ptasinska, Sylwia, Božanić, Dušan K., "Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets" in The Journal of Physical Chemistry C, 126, no. 32 (2022):13739-13747,
https://doi.org/10.1021/acs.jpcc.2c03208 . .
2

2D silver-bismuth-iodide rudorffitenanomaterials for photovoltaic devices: a novel route for chemical synthesis of Ag3BiI6nanosheets

Danilović, Danijela; Božanić, Dušan K.; Milosavljević, Aleksandar R.; Dojčilović, Radovan; Tošić, Dragana; Đoković, Vladimir; Sapkota, Pitambar; Ptasinska, Sylwia; Vukmirović, Nenad

(Belgrade : Institute of Physics Belgrade, 2021)

TY  - CONF
AU  - Danilović, Danijela
AU  - Božanić, Dušan K.
AU  - Milosavljević, Aleksandar R.
AU  - Dojčilović, Radovan
AU  - Tošić, Dragana
AU  - Đoković, Vladimir
AU  - Sapkota, Pitambar
AU  - Ptasinska, Sylwia
AU  - Vukmirović, Nenad
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10902
AB  - Silver-bismuth-iodide (Ag-Bi-I) rudorffite hybrid materials havegained an immense interest in the research for a lead-free, chemically stable and low-cost absorber material in photovoltaic devices [1].These materials can be fabricated in the form of macroscopic crystals or as thin films,in which case they can be integrated into solar cells that show good photoconversion efficiency[2]. Fabricating AgBi-I in nanocrystal form couldfacilitate further their integration in the photovoltaic devices and enhance device performance due to size confinement effects. In our previous study, we successfully fabricated ligand-free Ag3BiI6nanoparticles in the form of aerosols [3]. Here, we report on thefabricationprocedure of 2D Ag-Bi-I nanomaterials in the colloidal form. The results of the structural and morphological investigation of the nanosheets will be presented, as well as reconstruction of the electronic levels of the Ag3BiI6nanoparticles from the combined UV-vis absorption andX-ray photoelectron spectroscopy data.In addition, an analysis that shows the relation between the positions of the bands in the Ag3BiI6nanosheet absorption spectra and the thickness of the nanosheet will be discussed.
PB  - Belgrade : Institute of Physics Belgrade
C3  - PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
T1  - 2D silver-bismuth-iodide rudorffitenanomaterials for photovoltaic devices: a novel route for chemical synthesis of Ag3BiI6nanosheets
SP  - 76
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10902
ER  - 
@conference{
author = "Danilović, Danijela and Božanić, Dušan K. and Milosavljević, Aleksandar R. and Dojčilović, Radovan and Tošić, Dragana and Đoković, Vladimir and Sapkota, Pitambar and Ptasinska, Sylwia and Vukmirović, Nenad",
year = "2021",
abstract = "Silver-bismuth-iodide (Ag-Bi-I) rudorffite hybrid materials havegained an immense interest in the research for a lead-free, chemically stable and low-cost absorber material in photovoltaic devices [1].These materials can be fabricated in the form of macroscopic crystals or as thin films,in which case they can be integrated into solar cells that show good photoconversion efficiency[2]. Fabricating AgBi-I in nanocrystal form couldfacilitate further their integration in the photovoltaic devices and enhance device performance due to size confinement effects. In our previous study, we successfully fabricated ligand-free Ag3BiI6nanoparticles in the form of aerosols [3]. Here, we report on thefabricationprocedure of 2D Ag-Bi-I nanomaterials in the colloidal form. The results of the structural and morphological investigation of the nanosheets will be presented, as well as reconstruction of the electronic levels of the Ag3BiI6nanoparticles from the combined UV-vis absorption andX-ray photoelectron spectroscopy data.In addition, an analysis that shows the relation between the positions of the bands in the Ag3BiI6nanosheet absorption spectra and the thickness of the nanosheet will be discussed.",
publisher = "Belgrade : Institute of Physics Belgrade",
journal = "PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade",
title = "2D silver-bismuth-iodide rudorffitenanomaterials for photovoltaic devices: a novel route for chemical synthesis of Ag3BiI6nanosheets",
pages = "76",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10902"
}
Danilović, D., Božanić, D. K., Milosavljević, A. R., Dojčilović, R., Tošić, D., Đoković, V., Sapkota, P., Ptasinska, S.,& Vukmirović, N.. (2021). 2D silver-bismuth-iodide rudorffitenanomaterials for photovoltaic devices: a novel route for chemical synthesis of Ag3BiI6nanosheets. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
Belgrade : Institute of Physics Belgrade., 76.
https://hdl.handle.net/21.15107/rcub_vinar_10902
Danilović D, Božanić DK, Milosavljević AR, Dojčilović R, Tošić D, Đoković V, Sapkota P, Ptasinska S, Vukmirović N. 2D silver-bismuth-iodide rudorffitenanomaterials for photovoltaic devices: a novel route for chemical synthesis of Ag3BiI6nanosheets. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade. 2021;:76.
https://hdl.handle.net/21.15107/rcub_vinar_10902 .
Danilović, Danijela, Božanić, Dušan K., Milosavljević, Aleksandar R., Dojčilović, Radovan, Tošić, Dragana, Đoković, Vladimir, Sapkota, Pitambar, Ptasinska, Sylwia, Vukmirović, Nenad, "2D silver-bismuth-iodide rudorffitenanomaterials for photovoltaic devices: a novel route for chemical synthesis of Ag3BiI6nanosheets" in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade (2021):76,
https://hdl.handle.net/21.15107/rcub_vinar_10902 .