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Temperature- and Size-Dependent Photoluminescence of CuInS2 Quantum Dots.
Korepanov, Oleg; Kozodaev, Dmitriy; Aleksandrova, Olga; Bugrov, Alexander; Firsov, Dmitrii; Kirilenko, Demid; Mazing, Dmitriy; Moshnikov, Vyacheslav; Shomakhov, Zamir.
Afiliação
  • Korepanov O; Micro- and Nanoelectronics Department, Saint Petersburg Electrotechnical University "LETI", 197022 Saint Petersburg, Russia.
  • Kozodaev D; Micro- and Nanoelectronics Department, Saint Petersburg Electrotechnical University "LETI", 197022 Saint Petersburg, Russia.
  • Aleksandrova O; NT-MDT BV, 7335 Apeldoorn, The Netherlands.
  • Bugrov A; Micro- and Nanoelectronics Department, Saint Petersburg Electrotechnical University "LETI", 197022 Saint Petersburg, Russia.
  • Firsov D; Department of Physical Chemistry, Saint Petersburg Electrotechnical University "LETI", 197022 Saint Petersburg, Russia.
  • Kirilenko D; Micro- and Nanoelectronics Department, Saint Petersburg Electrotechnical University "LETI", 197022 Saint Petersburg, Russia.
  • Mazing D; Ioffe Institute, 194021 Saint Petersburg, Russia.
  • Moshnikov V; Micro- and Nanoelectronics Department, Saint Petersburg Electrotechnical University "LETI", 197022 Saint Petersburg, Russia.
  • Shomakhov Z; Micro- and Nanoelectronics Department, Saint Petersburg Electrotechnical University "LETI", 197022 Saint Petersburg, Russia.
Nanomaterials (Basel) ; 13(21)2023 Nov 01.
Article em En | MEDLINE | ID: mdl-37947736
We present the results of a temperature-dependent photoluminescence (PL) spectroscopy study on CuInS2 quantum dots (QDs). In order to elucidate the influence of QD size on PL temperature dependence, size-selective precipitation was used to obtain several nanoparticle fractions. Additionally, the nanoparticles' morphology and chemical composition were studied using transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The obtained QDs showed luminescence in the visible-near infrared range. The PL energy, linewidth, and intensity were studied within an 11-300 K interval. For all fractions, a temperature decrease led to a shift in the emission maximum to higher energies and pronounced growth of the PL intensity down to 75-100 K. It was found that for large particle fractions, the PL intensity started to decrease, with temperature decreasing below 75 K, while the PL intensity of small nanoparticles remained stable.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article