Issue 2, 2023

Enhanced photoluminescence of potassium-doped tungsten oxide by acetone exposure

Abstract

Studies of optical properties of doped nanocrystals of tungsten trioxide can elucidate new information about the material. A novel molecule-enhanced photoluminescence (PL) of potassium-doped tungsten trioxide (KxWO) was explored in the presence of different gases to understand charge transfer between molecules and KxWO on the properties of the material. We performed Raman spectroscopy and PL experiments in the presence of gaseous acetone or ethanol mixed with other gases (N2 and O2). PL at 630 nm from KxWO was observed and further enhanced when the sample was continuously irradiated with a 532 nm CW laser in acetone. A mechanism of strong emission of the PL induced by the charge transfer between the acetone and the KxWO is proposed.

Graphical abstract: Enhanced photoluminescence of potassium-doped tungsten oxide by acetone exposure

Supplementary files

Article information

Article type
Paper
Submitted
05 Oct 2022
Accepted
19 Dec 2022
First published
04 Jan 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 1236-1244

Enhanced photoluminescence of potassium-doped tungsten oxide by acetone exposure

A. Patel, W. Lu, B. Birmingham, M. Johnson, D. Wang, Z. Zhang and K. Wang, RSC Adv., 2023, 13, 1236 DOI: 10.1039/D2RA06267D

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