Polyvinylpyrrolidone as a Stabilizer in Synthesis of AgInS2 Quantum Dots

Oleg Korepanov; Olga Aleksandrova; Dmitrii Firsov; Zamir Kalazhokov; Demid Kirilenko; Dmitriy Kozodaev; Vasilii Matveev; Dmitriy Mazing; Vyacheslav Moshnikov

doi:10.3390/nano12142357

Polyvinylpyrrolidone as a Stabilizer in Synthesis of AgInS₂ Quantum Dots

Nanomaterials (Basel). 2022 Jul 9;12(14):2357. doi: 10.3390/nano12142357.

Authors

Affiliations

¹ Micro- and Nanoelectronics Department, Saint Petersburg Electrotechnical University "LETI", 197022 Saint Petersburg, Russia.
² Institute of Physics and Mathematics, Kabardino-Balkarian State University, n.a. Kh.M. Berbekov, 360004 Nalchik, Russia.
³ Institute of Computer Science and Problems of Regional Management, Kabardino-Balkar Scientific Center, Russian Academy of Science, 360004 Nalchik, Russia.
⁴ Ioffe Institute, 194021 Saint Petersburg, Russia.
⁵ NT-MDT BV, 7335 Apeldoorn, The Netherlands.
⁶ Petersburg Nuclear Physics Institute Named by B.P.Konstantinov of NRC «Kurchatov Institute», 188300 Gatchina, Russia.

Abstract

A synthesis protocol of polyvinylpyrrolidone-capped AgInS₂ quantum dots in aqueous solution is reported. Nanoparticle morphology and chemical composition were studied by means of TEM, XRD, XPS, and FTIR. The obtained quantum dots were luminescent in the visible range. The photoluminescence intensity dependence on the polyvinylpyrrolidone amount was demonstrated. The wavelength of the emission maximum varied with changing the [Ag]:[In] molar ratio. The temperature dependence of the photoluminescence intensity of the polyvinylpyrrolidone-capped AgInS₂ quantum dots was investigated within the temperature range of 11-294 K.

Keywords: AgInS2; PVP; polyvinylpyrrolidone; quantum dots.

Grants and funding

The APC was funded by NT-MDT BV.