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RESEARCH INTERESTS

perovskite solar cells, Raman spectroscopy,PL spectroscopy, AFM

ABOUT/BIOGRAPHY

Spyros Orfanoudakis earned his BSc in Physics from the National and Kapodistrian University of Athens in 2020, specializing in Condensed Matter Physics. He went on to complete his MSc in 2022 at the National Technical University of Athens (NTUA), Department of Physics. Since 2022, he has been pursuing a PhD at NTUA, conducting his research at the National Centre for Scientific Research (NCSR) "Demokritos" under the supervision of Dr. Stergiopoulos. His doctoral research focuses on the development of perovskite and chalcogenide light-emitting diodes (LEDs), with additional interests in perovskite photovoltaic devices. His work involves advanced characterization techniques such as photoluminescence (PL), time-resolved photoluminescence (TRPL), UV-Vis spectroscopy, atomic force microscopy (AFM), Raman spectroscopy, and electrical measurements. Spyros has authored over 13 peer-reviewed publications in high-impact journals. He has also presented his research at numerous national and international conferences, earning recognition for his contributions to the fields of optoelectronic materials and device engineering. His doctoral studies are supported by a scholarship from the Hellenic Foundation for Research and Innovation (HFRI/ELIDEK).

PUBLICATIONS

Theofylaktos, L, Kalafatis, A, Harlaftis, F, Orfanoudakis, S, Symeonidou, E, Karnachoriti, M, Mavropoulis, A, Dimitrakis, P, Banis, A, Oikonomopoulos, P, Bousoulas, P, Kontos, A G and Stergiopoulos, T, Impact of P3HT hole transport layer thickness on carrier dynamics in Sb₂S₃ n–i–p planar solar cells Journal of Physics: Energy, IOP Publishing, Volume 8, Pages: 025002, 2026 [doi]

Bousoulas, Panagiotis and Orfanoudakis, Spyros and Tsioustas, Charalampos and Vartian, Roupen and Cheliotis, Ilias and Oikonomopoulos, Panagiotis and Tsipas, Polychronis and Spathi, Danai and Kontos, Athanassios G. and Zergioti, Ioanna and Stergiopoulos, Thomas and Tsoukalas, Dimitris, Interfacial Engineering of Two-Dimensional Perovskite Memristors toward Reliable and Flexible Optoelectronic Memory Arrays ACS Applied Materials & Interfaces, American Chemical Society, Volume 18, Pages: 19315-19326, 2026 [doi]

Spyros Orfanoudakis, Konstantina Yannakopoulou, Julia Morat, Leonidas Tsetseris, Polychronis Tsipas, Stefania Skorda, Alexandros El Sachat, Feng Gao, Athanasios G Kontos and Thomas Stergiopoulos, Mitigating Residual FAI for Air-Stable FAPbI3 LEDs ChemRxiv, Volume 2026, 2026 [doi]

Spyros Orfanoudakis, Mosxoula Dimitriadi, Nikolaos Zacharopoulos, Alexandros Banis, Athanassios G. Kontos, Georgios Sakellariou and Thomas Stergiopoulos, Stable, Near-Unity-PLQY CsPbBr3 QDs by In-Situ Hydroxyl-Terminated Polystyrene Ligands ChemRxiv, Volume 2026, 2026 [doi]

Panagopoulou, Chrysi, Bousoulas, Panagiotis, Kalafatis, Apostolos, Orfanoudakis, Spyros, Tsioustas, Charalampos, Banis, Alexandros, Tsipas, Polychronis, Kontos, Athanassios G., Stergiopoulos, Thomas and Tsoukalas, Dimitris, Optoelectronic inhibitory synapses in the visible range from PbS nanocrystal arrays J. Mater. Chem. C, The Royal Society of Chemistry, Volume 14, Pages: 1789-1794, 2026 [doi]

Orfanoudakis, Spyros, Dallas, Panagiotis, Zacharopoulos, Nikolaos, Tsipas, Polychronis, Banis, Alexandros, Tsetseris, Leonidas, Kontos, Athanassios G. and Stergiopoulos, Thomas, Shell-Free CuInS2 Nanocrystals with Near-Unity Photoluminescence for Deep-Red LEDs ACS Applied Optical Materials, Volume 4, Pages: 140-147, 2026 [doi]

Orfanoudakis, Spyros, Gkini, Konstantina, Harlaftis, Filippos, Tsipas, Polychronis, Yannakopoulou, Konstantina, Kontos, Athanasios G and Stergiopoulos, Thomas, Thiol-bearing tertiary alkylammonium chloride for regulation of PbI2 excess in FAPbI3 perovskite solar cells 2025 [doi]

Orfanoudakis, Spyros, Dallas, Panagiotis, Zacharopoulos, Nikolaos, Tsipas, Polychronis, Banis, Alexandros, Tsetseris, Leonidas, Kontos, Athanasios G and Stergiopoulos, Thomas, Additive-Guided Synthesis of CuInS₂ Nanocrystals Enabling Efficient Radiative Recombination 2025 [doi]

Kalafatis, Apostolos, Orfanoudakis, Spyros, Karaslanidis, Kostas, Tsipas, Polychronis, Banis, Alexandros and Stergiopoulos, Thomas, Low-Temperature Synthesis of Luminescent Ag-In-Zn-S Quantum Dots for Device-Grade Semiconductor Inks 2025 [doi]

Bousoulas, Panagiotis, Orfanoudakis, Spyros, Tsetseris, Leonidas, Tsioustas, Chalalampos, Skorda, Stefania, Sachat, Alexandros El, Tsipas, Polychronis, Kontos, Athanassios G, Stergiopoulos, Thomas and Tsoukalas, Dimitris, Low-Power Perovskite-Based Memristors Enable Fused Reservoir Computing and Neuromorphic Vision with Highly Accurate Color Perception Small, Pages: e08167, 2025 [doi]

Marazioti, Varvara, Douvas, Antonios M, Vouvoudi, Evangelia C, Bikiaris, Dimitrios, Papadokostaki, Kyriaki, Nioras, Dimitrios, Gogolides, Evangelos, Orfanoudakis, Spyros, Stergiopoulos, Thomas, Boyatzis, Stamatios and others, The Condition of Contemporary Murals in Sun-Exposed Urban Environments: A Model Study Based on Spray-Painted Mock-Ups and Simulated Light Ageing Heritage, MDPI, Volume 7, Pages: 3932–3959, 2024 [doi]

Gkini, Konstantina, Orfanoudakis, Spyros, Harlaftis, Filippos, Dallas, Panagiotis, Kouzios, Christos, Tsipas, Polychronis, Kontos, Athanassios G, Konstantakou, Maria and Stergiopoulos, Thomas, Influence of TFSI post-treatment on surface doping and passivation of lead halide perovskites Journal of Materials Chemistry A, Royal Society of Chemistry, Volume 12, Pages: 31291–31300, 2024 [doi]

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