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1.
Stability of interfaces between Bi2Se3 topological insulator and metals
Matjaž Valant, Sandra Gardonio, Mattia Fanetti, 2025, objavljeni povzetek znanstvenega prispevka na konferenci (vabljeno predavanje)

Ključne besede: topološki izolatorji, elektrode, stične ravnine
Objavljeno v RUNG: 17.03.2025; Ogledov: 410; Prenosov: 1
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2.
The role of fluorine-functionalized organic spacers for defect passivation and low-dimensional phase formation in 3D MAPI perovskite solar cells
Ali Semerci, Javier Urieta-Mora, Sander Driessen, Ali Buyruk, Rik Hooijer, Agustín Molina-Ontoria, Bülent Alkan, Seckin Akin, Mattia Fanetti, Saim Emin, 2025, izvirni znanstveni članek

Opis: Widespread application of organic-inorganic halide perovskites (OIHP) still faces a major obstacle in mitigating moisture-induced degradation. Integrating organic spacers, as defect passivation facilitators along with low-dimensional phase (LDP) formation is an effective approach to enhance the efficiency and robustness of 3D methyl ammonium lead iodide (MAPI) in photovoltaics (PV). Here, the formamidinium cation (FA+) employing 3,5-difluorobenzene-1-carboximidamidium iodide (2F), 4-(trifluoromethyl)benzene-1-carboximidamidium iodide (3F), and 2,3,4,5,6-pentafluorobenzene-1-carboximidamidium iodide (5F) organic spacers as passivation layer in 3D/LDP OIHP solar cells is utilized. Fluorine atom position and quantity in organic spacers change the optoelectronic characteristics of the perovskites, enhancing hydrophobicity, facilitating LDP formation, and augmenting dipole moments, thereby facilitating charge separation processes. PV performance analysis reveals that 3F-treated 3D/LDP devices achieve the highest efficiency of 19.22%. Experimental results and density functional theory (DFT) studies attribute the higher performance of 3F-modified devices to effective LDP formation, enhanced passivation of defect states at perovskite surfaces and grain boundaries, the highest dipole moment and lowest band gap among the evaluated spacers. The stability tests show that, after 1000 h, 3F- and 5F-modified 3D/LDP OIHP devices retain over 85% of their initial efficiency. This research opens novel avenues for designing appropriate organic spacers to attenuate defects in 3D/LDP PV devices.
Ključne besede: fluorine-functionalized molecules, MAPI perovskite solar cells, deffect passivation
Objavljeno v RUNG: 20.02.2025; Ogledov: 649; Prenosov: 4
.pdf Celotno besedilo (3,26 MB)
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3.
The interface between Pt and ▫$Bi_2Se_3$▫ : instability and formation of a new ordered phase
Mattia Fanetti, Katja Ferfolja, Sandra Gardonio, Matjaž Valant, 2024, izvirni znanstveni članek

Ključne besede: topological insulator, platinum, interface, thin film, TEM, intermetallic
Objavljeno v RUNG: 28.01.2025; Ogledov: 696; Prenosov: 5
.pdf Celotno besedilo (6,19 MB)
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4.
Scienza senza confini : l'ǂesempio dei profitaliani nell'ateneo di Nova Gorica
2024, intervju

Objavljeno v RUNG: 05.12.2024; Ogledov: 823; Prenosov: 4
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Synthesis and optical properties of Cr-doped ▫$Bi2_Se_3$▫ topological insulator nanoplatelets
Blaž Belec, Thanveer Thajudheen, Sandra Gardonio, Mattia Fanetti, Matjaž Valant, 2024, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: topological insulators, optical properties, synthesis
Objavljeno v RUNG: 30.09.2024; Ogledov: 996; Prenosov: 2
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Unveiling cathodoluminescence in ▫$Bi_2Se_3$▫ : a plasmonic signature?
Thanveer Thajudheen, Blaž Belec, Mattia Fanetti, Matjaž Valant, 2024, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: cathodoluminescence, optical properties, topological insulators
Objavljeno v RUNG: 12.06.2024; Ogledov: 1511; Prenosov: 3
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10.
From electrons to emission : exploring cathodoluminescence for advanced material characterization
Blaž Belec, Thanveer Thajudheen, Mattia Fanetti, 2024, objavljeni povzetek znanstvenega prispevka na konferenci (vabljeno predavanje)

Ključne besede: cathodoluminescence, optical properties, topological insulators
Objavljeno v RUNG: 12.06.2024; Ogledov: 1580; Prenosov: 3
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