Photoluminescence and far-infrared spectroscopy of PbS quantum dots - Polyvinyl alcohol nanocomposite
Само за регистроване кориснике
2008
Аутори
Kostić, RadmilaRomčević, Maja J.
Romčević, Nebojša Ž.
Klopotowski, L.
Kossut, J.
Kujanin-Jakovjevic, J.
Čomor, Mirjana
Nedeljković, Jovan
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The nanocomposite consisting of PbS quantum dots with average diameter of 26 A and polyvinyl alcohol was characterized using photoluminescence and far-infrared spectroscopy. Photoluminescence spectra of nanocomposite, measured in temperature range from 8 to 280 K, consists of broad peak which spans the energy range from 1.2 to 2.1 eV and can be connected with trap states inside the band gap. Far-infrared measurements are consistent with theoretical calculations that include mechanical boundary conditions at the quantum dot - host interface. Observed peak at 90 cm(-1) can be assigned to coupled modes with l(p) = 1, while broad peak at 275 cm(-1) is above any lattice frequency and is close to sum of the frequencies of the l(p) = 0 acoustic and l(p) = 0 coupled optical mode of PbS quantum dots. (c) 2007 Elsevier B.V. All rights reserved.
Кључне речи:
PbS quantum dots / polyvinyl alcohol / nanocomposite / photoluminescence spectroscopy / far-infrared spectroscopyИзвор:
Optical Materials, 2008, 30, 7, 1177-1182Финансирање / пројекти:
- Спектроскопија елементарних ексцитација код полумагнетних полупроводника (RS-MESTD-MPN2006-2010-141028)
- Физика нискодимензионих и нанометарских структура и материјала (RS-MESTD-MPN2006-2010-141047)
- Синтеза и карактеризација наночестица и нанокомпозита (RS-MESTD-MPN2006-2010-142066)
Напомена:
- 1st International Conference on Physics of Optical Materials and Devices, Aug 31-Sep 02, 2006, Herceg Novi, Montenegro
DOI: 10.1016/j.optmat.2007.05.044
ISSN: 0925-3467
WoS: 000254419100034
Scopus: 2-s2.0-39649108661
Колекције
Институција/група
VinčaTY - JOUR AU - Kostić, Radmila AU - Romčević, Maja J. AU - Romčević, Nebojša Ž. AU - Klopotowski, L. AU - Kossut, J. AU - Kujanin-Jakovjevic, J. AU - Čomor, Mirjana AU - Nedeljković, Jovan PY - 2008 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6733 AB - The nanocomposite consisting of PbS quantum dots with average diameter of 26 A and polyvinyl alcohol was characterized using photoluminescence and far-infrared spectroscopy. Photoluminescence spectra of nanocomposite, measured in temperature range from 8 to 280 K, consists of broad peak which spans the energy range from 1.2 to 2.1 eV and can be connected with trap states inside the band gap. Far-infrared measurements are consistent with theoretical calculations that include mechanical boundary conditions at the quantum dot - host interface. Observed peak at 90 cm(-1) can be assigned to coupled modes with l(p) = 1, while broad peak at 275 cm(-1) is above any lattice frequency and is close to sum of the frequencies of the l(p) = 0 acoustic and l(p) = 0 coupled optical mode of PbS quantum dots. (c) 2007 Elsevier B.V. All rights reserved. T2 - Optical Materials T1 - Photoluminescence and far-infrared spectroscopy of PbS quantum dots - Polyvinyl alcohol nanocomposite VL - 30 IS - 7 SP - 1177 EP - 1182 DO - 10.1016/j.optmat.2007.05.044 ER -
@article{ author = "Kostić, Radmila and Romčević, Maja J. and Romčević, Nebojša Ž. and Klopotowski, L. and Kossut, J. and Kujanin-Jakovjevic, J. and Čomor, Mirjana and Nedeljković, Jovan", year = "2008", abstract = "The nanocomposite consisting of PbS quantum dots with average diameter of 26 A and polyvinyl alcohol was characterized using photoluminescence and far-infrared spectroscopy. Photoluminescence spectra of nanocomposite, measured in temperature range from 8 to 280 K, consists of broad peak which spans the energy range from 1.2 to 2.1 eV and can be connected with trap states inside the band gap. Far-infrared measurements are consistent with theoretical calculations that include mechanical boundary conditions at the quantum dot - host interface. Observed peak at 90 cm(-1) can be assigned to coupled modes with l(p) = 1, while broad peak at 275 cm(-1) is above any lattice frequency and is close to sum of the frequencies of the l(p) = 0 acoustic and l(p) = 0 coupled optical mode of PbS quantum dots. (c) 2007 Elsevier B.V. All rights reserved.", journal = "Optical Materials", title = "Photoluminescence and far-infrared spectroscopy of PbS quantum dots - Polyvinyl alcohol nanocomposite", volume = "30", number = "7", pages = "1177-1182", doi = "10.1016/j.optmat.2007.05.044" }
Kostić, R., Romčević, M. J., Romčević, N. Ž., Klopotowski, L., Kossut, J., Kujanin-Jakovjevic, J., Čomor, M.,& Nedeljković, J.. (2008). Photoluminescence and far-infrared spectroscopy of PbS quantum dots - Polyvinyl alcohol nanocomposite. in Optical Materials, 30(7), 1177-1182. https://doi.org/10.1016/j.optmat.2007.05.044
Kostić R, Romčević MJ, Romčević NŽ, Klopotowski L, Kossut J, Kujanin-Jakovjevic J, Čomor M, Nedeljković J. Photoluminescence and far-infrared spectroscopy of PbS quantum dots - Polyvinyl alcohol nanocomposite. in Optical Materials. 2008;30(7):1177-1182. doi:10.1016/j.optmat.2007.05.044 .
Kostić, Radmila, Romčević, Maja J., Romčević, Nebojša Ž., Klopotowski, L., Kossut, J., Kujanin-Jakovjevic, J., Čomor, Mirjana, Nedeljković, Jovan, "Photoluminescence and far-infrared spectroscopy of PbS quantum dots - Polyvinyl alcohol nanocomposite" in Optical Materials, 30, no. 7 (2008):1177-1182, https://doi.org/10.1016/j.optmat.2007.05.044 . .