Issue 2, 2015
From the journal:

Dalton Transactions

Tunable optical properties of hybrid inorganic–organic [(TiO2)m(Ti–O–C6H4–O–)k]n superlattice thin films

Janne-Petteri Niemeläa  and  Maarit Karppinen*a  

* Corresponding authors

a Department of Chemistry, Aalto University, FI-00076 Aalto, Finland
E-mail: maarit.karppinen@aalto.fi

Abstract

A combined atomic layer deposition (ALD) and molecular layer deposition (MLD) process was developed to fabricate inorganic–organic [(TiO2)m(Ti–O–C6H4–O–)k]n thin films from TiCl4, water and hydroquinone (HQ) precursors, and in particular, superlattice structures where single-molecular organic layers (k = 1) are periodically sandwiched between thicker TiO2 layers (m > 1). The incorporation of organic layers was found to systematically blue-shift the optical band gap of TiO2 with decreasing superlattice period and – most importantly – to sensitize the TiO2 layers to visible light over a considerable part of the visible range below 700 nm, a fact that could be of substantial interest for photocatalysis and solar cell applications.

Graphical abstract: Tunable optical properties of hybrid inorganic–organic [(TiO2)m(Ti–O–C6H4–O–)k]n superlattice thin films

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Article information

DOI
https://doi.org/10.1039/C4DT02550D
Article type
Paper
Submitted
21 Aug 2014
Accepted
24 Oct 2014
First published
24 Oct 2014

Dalton Trans., 2015,44, 591-597

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Tunable optical properties of hybrid inorganic–organic [(TiO2)m(Ti–O–C6H4–O–)k]n superlattice thin films

J. Niemelä and M. Karppinen, Dalton Trans., 2015, 44, 591 DOI: 10.1039/C4DT02550D

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