Temperature- and Size-Dependent Photoluminescence of CuInS[sub.2] Quantum Dots
We present the results of a temperature-dependent photoluminescence (PL) spectroscopy study on CuInS[sub.2] 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, t...
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| Veröffentlicht in: | Nanomaterials (Basel, Switzerland) Switzerland), 2023-11, Vol.13 (21) |
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| creator | Korepanov, Oleg Kozodaev, Dmitriy Aleksandrova, Olga Bugrov, Alexander Firsov, Dmitrii Kirilenko, Demid Mazing, Dmitriy Moshnikov, Vyacheslav Shomakhov, Zamir |
| description | We present the results of a temperature-dependent photoluminescence (PL) spectroscopy study on CuInS[sub.2] 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. |
| doi_str_mv | 10.3390/nano13212892 |
| format | Article |
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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central Open Access; MDPI - Multidisciplinary Digital Publishing Institute; PubMed Central |
| subjects | Analysis Composition Copper compounds Diffraction Indium Mechanical properties Nanoparticles Optical properties Photoluminescence Quantum dots Sulfides X-ray spectroscopy X-rays |
| title | Temperature- and Size-Dependent Photoluminescence of CuInS[sub.2] Quantum Dots |
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