Αποτελέσματα - Λεπτομέρειες
Εντολή Αναζήτησης : Συγγραφέας="Στρατάκης"
Και Συγγραφέας="Εμμανουήλ"
Τρέχουσα Εγγραφή: 26 από 115
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Τίτλος |
UV laser-induced reduction of graphene oxide layers for photovoltaic applications |
Συγγραφέας
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Μιχαήλ, Ανδρέας
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Σύμβουλος διατριβής
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Στρατάκης, Εμμανουήλ
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Περίληψη |
In recent years, a great interest have been developed in the research of graphene and graphene oxide
applications. In this thesis, we discuss about the laser-induced reduction of graphene oxide. The
main goal is to find the proper parameters for the graphene oxide deposition on substrates as well as
the uniform laser reduction of graphene oxide layers for large areas,
Firstly, we discuss about the basic principles of lasers and how they work. We briefly discuss about
UV excimer lasers, in particular KrF excimer laser tecgnology. which is used in our expirements.
Then, we continue discussing about graphene and graphene oxide synthesis and structure. Then, the
laser-induced reduction of graphene oxide is explained. At last, we shortly refer to the basic theory
behind UV-Vis spectroscopy and I-V measurements, which are used in the experimental procedure
in order to characterize the laser-treated samples.
In the experimental procedure, we present materials and methods used. At first, there is a report in
the production of the graphene oxide solution. Continuing, we make a statement at the GO
deposition on the substrates prepared using the SimCoater spray coater. Then, we explain the
experimental procedure for the laser reduction by illustrating, using different parameters for the
reduction need. Lastly, different techniques have been used for the characterization of the laser-
treated surface. Optical and electrical properties of the materials were studied by mean of UV-
VIS spectroscopy and Two probe method, respectively.
The results are illustrated in the last section, where we discuss on the experimental results. During
this thesis, as shown in this section, the spray-coated GO film uniformity is greatly improved. Then,
we define the appropriate laser parameters for the successful laser-induced reduction of the GO film
in a single spot area. Further, the best laser and scanning parameters are determined to achieve GO
reduction over large areas. Absorbance and sheet resistance measurements provide a valuable
feedback information for the success of the GO reduction process.
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Γλώσσα |
Αγγλικά |
Ημερομηνία έκδοσης |
2022-07-22 |
Συλλογή
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Σχολή/Τμήμα--Σχολή Θετικών και Τεχνολογικών Επιστημών--Τμήμα Φυσικής--Πτυχιακές εργασίες
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Τύπος Εργασίας--Πτυχιακές εργασίες
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Μόνιμη Σύνδεση |
https://elocus.lib.uoc.gr//dlib/f/5/d/metadata-dlib-1657785258-983557-25791.tkl
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Εμφανίσεις |
148 |