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Investigating multicolour photochromic behaviour of AgCl and AgI thin films loaded with silver nanoparticles

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Abstract

Multicolour photochromic behaviour in light-sensitive Ag–AgCl and Ag–AgI thin films at room temperature was investigated and compared. Although it seemed that the Ag–Ag halide thin films have similar optical properties, their optical responses to a monochromatic laser beam are completely different. It is shown that Ag–AgCl thin film changes its colour under light irradiation to the same colour of the incident light, regardless of the polarization state of the laser beam. In contrast, the Ag–AgI thin film changes to complementary colours of the incident beam. The different optical behaviours of Ag–AgCl and Ag–AgI thin films are due to the different electrical properties of AgCl and AgI thin films. Moreover, the multicolour photochromic behaviour is due to the changes of absorption spectra and surface morphology of silver nanoparticles on silver-haide thin film. These changes are the result of excitation of localized surface plasmon resonance of silver nanoparticles by the laser beam and charge transfer between silver nanoparticles and silver-halide thin films.

Graphical abstract: Investigating multicolour photochromic behaviour of AgCl and AgI thin films loaded with silver nanoparticles

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Publication details

The article was received on 30 Jun 2017, accepted on 24 Jan 2018 and first published on 07 Feb 2018


Article type: Paper
DOI: 10.1039/C7CP07923K
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
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    Investigating multicolour photochromic behaviour of AgCl and AgI thin films loaded with silver nanoparticles

    R. Talebi, Phys. Chem. Chem. Phys., 2018, Advance Article , DOI: 10.1039/C7CP07923K

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