ALD/MLD fabrication of luminescent Eu-organic hybrid thin films using different aromatic carboxylic acid components with N and O donors. Issue 105 (31st October 2016)

• Record Type: Journal Article
• Authors: Giedraityte, Z.; Johansson, L.-S.; Karppinen, M.
• Is Part Of: RSC advances. Volume 6:Issue 105(2016)
• Page Start: 103412
• Page End: 103417
• Publication Date: 2016-10-31
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra24175a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Atomic/molecular layer deposition (ALD/MLD) processes based on Eu(thd)3 and three different aromatic organic acids with O and N donors as precursors are systematically investigated for the growth of Eu-based inorganic–organic thin-film phosphors. Abstract : Atomic/molecular layer deposition (ALD/MLD) processes based on Eu(thd)3 and three different aromatic organic acids with O and N donors as precursors are systematically investigated for the growth of Eu-based inorganic–organic thin-film phosphors. For all the acid precursors evaluated, i.e. 1, 4-dicarboxylic, 3, 5-pyridinedicarboxylic and 2, 6-pyridinedicarboxylic acids, conditions are found to produce high-quality hybrid thin films through self-saturating gas–solid reactions as expected for an ideal ALD/MLD process. The resultant Eu-organic thin films show intense red photoluminescence. The luminescence characteristics depend on the manner the organic ligands are bound to Eu 3+ ; this is discussed based on FTIR, XPS, UV-vis and fluorescence spectroscopy data measured for the films.