Microwave-Assisted Non-aqueous and Low-Temperature Synthesis of Titania and Niobium-Doped Titania Nanocrystals and Their Application in Halide Perovskite Solar Cells As Electron Transport Layers

Overview

Journal ACS Omega

Publisher American Chemical Society

Specialty Chemistry

Date 2022 Mar 7

PMID 35252657

Authors

Mutalifu Abulikemu

Max Lutz Tietze

Saran Waiprasoet

Pichaya Pattanasattayavong

Bita E A Tabrizi

Valerio DElia

Silvano Del Gobbo

Ghassan E Jabbour

Affiliations

Soon will be listed here.

Abstract

Undoped and Nb-doped TiO nanocrystals are prepared by a microwave-assisted non-aqueous sol-gel method based on a slow alkyl chloride elimination reaction between metal chlorides and benzyl alcohol. Sub-4 nm nanoparticles are grown under microwave irradiation at 80 °C in only 3 h with precise control of growth parameters and yield. The obtained nanocrystals could be conveniently used to cast compact TiO or Nb-doped TiO electron transport layers for application in formamidinium lead iodide-based photovoltaic devices. Niobium doping is found to improve the cell performance by increasing the conductivity and mobility of the electron transport layer. At the same time, a measurable decrease in parasitic light absorption in the low wavelength portion of the spectrum was observed.

Citing Articles

From Gel to Crystal: Mechanism of HfO and ZrO Nanocrystal Synthesis in Benzyl Alcohol.

Goossens E, Aalling-Frederiksen O, Tack P, Van den Eynden D, Walsh-Korb Z, Jensen K J Am Chem Soc. 2024; 146(15):10723-10734.

PMID: 38588404 PMC: 11027147. DOI: 10.1021/jacs.4c00678.

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