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Identifier |
000447039 |
Title |
Probing the effect of glass network on the synthesis and luminescence properties of composite perovskite glasses |
Alternative Title |
Διερεύνηση της επίδρασης του πλέγματος στην σύνθεση και φωτοφωταύγεια σύνθετων περοβσκιτικών υάλων |
Author
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Καραγιαννάκη, Άννα Κ.
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Thesis advisor
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Στρατάκης, Εμμανουήλ
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Reviewer
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Κουτσολέλος, Αθανάσιος
Κιοσέογλου, Γεώργιος
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Abstract |
All-inorganic cesium lead perovskite nanocrystals are highly promising candidates for various
optoelectronic and photonic applications. Although, their poor stability upon exposure to moisture
as well as the lead toxicity issues limits significantly their use. A modern and promising strategy
on resolving these issues is the encapsulation of highly luminescent perovskite nanocrystals within
transparent inorganic oxide glasses. While the encapsulation procedure effect on the development
and properties of the so-formed PV-Glasses has been explored in detail, there is luck of
understanding the influence of the selected glass composition and network type on the outcome of
the perovskite-glass development. In this study, we report on the synthesis and photoluminescence
properties of composite perovskite-glasses upon growing all-inorganic lead halide perovskites
within three different types of inorganic oxide glasses. In particular, silver metaphosphate glass is
selected as the first host. It is revealed that the low glass transition temperature of the phosphate
glass limits significantly the temperature range of the required post-melting annealing treatment,
while the lead salt precursors react with the phosphate entities of the network and destroying the
stoichiometry of the PNCs. As a result, the formation of PNCs is hindered. Following this, a double
network former borophosphate glass was employed. While annealing treatments at higher
temperature were facilitated in this case, the high silver content becomes an obstacle for the
perovskite formation. The last composite glass studied, is a borate system with lead bromide
(CsPbBr3) and cesium lead iodide (CsPbI3) perovskites. The developed composite glasses exhibit
interesting photoluminescence features, while the interactions with the borate network are
thoroughly investigated.
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Language |
English |
Subject |
Glasser |
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Ύαλοι |
Issue date |
2022-03-31 |
Collection
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School/Department--School of Sciences and Engineering--Department of Chemistry--Post-graduate theses
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Type of Work--Post-graduate theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/e/2/7/metadata-dlib-1647947569-793962-25211.tkl
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Views |
555 |