Low-temperature photoluminescence of CuSe2 nano-objects in selenium thin films

2017
Аутори
Gilic, MartinaPetrović, Milica
Ćirković, Jovana

Paunović, Novica
Savic-Sević, Svetlana

Nikitović, Zeljka
Romčević, Maja
Yahia, Ibrahim
Romčević, Nebojša
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Thin films of CuSe2 nanoparticles embedded in selenium matrix were prepared by vacuum evaporation method on a glass substrate at room temperature. The optical properties of the films were investigated by photoluminescence spectroscopy (T = 20-300K) and UV-VIS spectroscopy (T = 300K). Surface morphology was investigated by scanning electron microscopy. The band gap for direct transition in CuSe2 was found to be in the range of 2.72-2.75 eV and that for indirect transition is in the range of 1.71-1.75 eV determined by UV-VIS spectroscopy. On the other hand, selenium exhibits direct band gap in the range of 2.33-2.36 eV. All estimated band gaps slightly decrease with the increase of the film thickness. Photoluminescence spectra of the thin films clearly show emission bands at about 1.63 and 2.32 eV at room temperature, with no shift observed with decreasing temperature. A model was proposed for explaining such anomaly.
Кључне речи:
thin films / spectroscopy / SEM / optical properties / chalcogenidesИзвор:
Processing and Application of Ceramics, 2017, 11, 2, 127-135Издавач:
- Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
Финансирање / пројекти:
DOI: 10.2298/PAC1702127G
ISSN: 1820-6131
WoS: 000409012100008
Scopus: 2-s2.0-85021836025
Институција/група
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Gilic, Martina AU - Petrović, Milica AU - Ćirković, Jovana AU - Paunović, Novica AU - Savic-Sević, Svetlana AU - Nikitović, Zeljka AU - Romčević, Maja AU - Yahia, Ibrahim AU - Romčević, Nebojša PY - 2017 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1031 AB - Thin films of CuSe2 nanoparticles embedded in selenium matrix were prepared by vacuum evaporation method on a glass substrate at room temperature. The optical properties of the films were investigated by photoluminescence spectroscopy (T = 20-300K) and UV-VIS spectroscopy (T = 300K). Surface morphology was investigated by scanning electron microscopy. The band gap for direct transition in CuSe2 was found to be in the range of 2.72-2.75 eV and that for indirect transition is in the range of 1.71-1.75 eV determined by UV-VIS spectroscopy. On the other hand, selenium exhibits direct band gap in the range of 2.33-2.36 eV. All estimated band gaps slightly decrease with the increase of the film thickness. Photoluminescence spectra of the thin films clearly show emission bands at about 1.63 and 2.32 eV at room temperature, with no shift observed with decreasing temperature. A model was proposed for explaining such anomaly. PB - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad T2 - Processing and Application of Ceramics T1 - Low-temperature photoluminescence of CuSe2 nano-objects in selenium thin films EP - 135 IS - 2 SP - 127 VL - 11 DO - 10.2298/PAC1702127G ER -
@article{ author = "Gilic, Martina and Petrović, Milica and Ćirković, Jovana and Paunović, Novica and Savic-Sević, Svetlana and Nikitović, Zeljka and Romčević, Maja and Yahia, Ibrahim and Romčević, Nebojša", year = "2017", abstract = "Thin films of CuSe2 nanoparticles embedded in selenium matrix were prepared by vacuum evaporation method on a glass substrate at room temperature. The optical properties of the films were investigated by photoluminescence spectroscopy (T = 20-300K) and UV-VIS spectroscopy (T = 300K). Surface morphology was investigated by scanning electron microscopy. The band gap for direct transition in CuSe2 was found to be in the range of 2.72-2.75 eV and that for indirect transition is in the range of 1.71-1.75 eV determined by UV-VIS spectroscopy. On the other hand, selenium exhibits direct band gap in the range of 2.33-2.36 eV. All estimated band gaps slightly decrease with the increase of the film thickness. Photoluminescence spectra of the thin films clearly show emission bands at about 1.63 and 2.32 eV at room temperature, with no shift observed with decreasing temperature. A model was proposed for explaining such anomaly.", publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad", journal = "Processing and Application of Ceramics", title = "Low-temperature photoluminescence of CuSe2 nano-objects in selenium thin films", pages = "135-127", number = "2", volume = "11", doi = "10.2298/PAC1702127G" }
Gilic, M., Petrović, M., Ćirković, J., Paunović, N., Savic-Sević, S., Nikitović, Z., Romčević, M., Yahia, I.,& Romčević, N.. (2017). Low-temperature photoluminescence of CuSe2 nano-objects in selenium thin films. in Processing and Application of Ceramics Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 11(2), 127-135. https://doi.org/10.2298/PAC1702127G
Gilic M, Petrović M, Ćirković J, Paunović N, Savic-Sević S, Nikitović Z, Romčević M, Yahia I, Romčević N. Low-temperature photoluminescence of CuSe2 nano-objects in selenium thin films. in Processing and Application of Ceramics. 2017;11(2):127-135. doi:10.2298/PAC1702127G .
Gilic, Martina, Petrović, Milica, Ćirković, Jovana, Paunović, Novica, Savic-Sević, Svetlana, Nikitović, Zeljka, Romčević, Maja, Yahia, Ibrahim, Romčević, Nebojša, "Low-temperature photoluminescence of CuSe2 nano-objects in selenium thin films" in Processing and Application of Ceramics, 11, no. 2 (2017):127-135, https://doi.org/10.2298/PAC1702127G . .