Prof. Emmanuel Kymakis
Hellenic Mediterranean University, Heraklion, Greece
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Academic Career Length
26Years (2001-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 September 2014 in Journal of Colloid and Interface Science
Journal Article
DKDimitrios Konios
Dimitrios Konios
Minas M. Stylianakis
Emmanuel StratakisEmmanuel Kymakis7 January 2002 in Applied Physics Letters
Journal Article
Emmanuel KymakisGAG. A. J. Amaratunga
G. A. J. Amaratunga
We report the optoelectronic properties occurring in single-walled carbon nanotubes (SWNTs)—conjugated polymer, poly(3-octylthiophene) composites. Composite films were drop or spin cast from a solution on indium–tin oxide (ITO) and quartz substrates and studied using absorption spectroscopy and electrical characterization methods. Diodes (Al/polymer-nanotube composite/ITO) with a low nanotube concentration show photovoltaic behavior, with an open circuit voltage of 0.7–0.9 V. The short circuit current is increased by two orders of magnitude compared with the pristine polymer diodes and the fill factor also increases from 0.3 to 0.4 for the nanotube/polymer cells. It is proposed that the main reason for this increase is the photoinduced electron transfer at the polymer/nanotube interface. The results show that the conjugated polymer-SWNTs composite represents an alternative class of organic semiconducting material that is promising for organic photovoltaic cells with improved performance.
1 April 2013 in Materials Today
Journal Article
Emmanuel StratakisEmmanuel Kymakis1 March 2009 in Energy Conversion and Management
Journal Article
Emmanuel KymakisSKSofoklis Kalykakis
Sofoklis Kalykakis
TPThales M. Papazoglou
Thales M. Papazoglou
1 February 2003 in Journal of Applied Physics
Journal Article
Emmanuel KymakisIAI. Alexandrou
I. Alexandrou
GAG. A. J. Amaratunga
G. A. J. Amaratunga
Organic photovoltaic devices based on the bulk heterojunction concept, containing a blend of single-wall carbon nanotubes (SWNTs) and soluble polythiophenes (P3OT) were studied. The open circuit voltage of the devices was found to be 0.75 V, which is larger than the theoretical limit calculated by the metal–insulator–metal (MIM) model. In order to investigate the origin of this unusually high we have prepared P3OT–SWNT based devices with different metal negative electrodes. The measured is only very weakly dependent on the work function of the metal, suggesting that the MIM model does not apply in this case. From the analysis of the current–voltage characteristics and electron microscopy imaging of the composite structure, it is proposed that the photovoltaic response of these devices is based on the introduction of internal polymer/nanotube junctions within the polymer matrix, which due to a photoinduced electron transfer from the polymer to the nanotube contribute to enhanced charge separation and collection. The data suggest that the negligible influence of the negative electrode work function on can be explained by the metal negative electrode forming ohmic contacts to the nanotube percolation paths.
11 October 2020 in Advanced Science
Journal Article
GKGeorge Kakavelakis
George Kakavelakis
MGMurali Gedda
Murali Gedda
APApostolis Panagiotopoulos
Apostolis Panagiotopoulos
Emmanuel KymakisTAThomas D. Anthopoulos
Thomas D. Anthopoulos
Konstantinos PetridisMetal halide perovskites (MHPs) have emerged as a frontrunner semiconductor technology for application in third generation photovoltaics while simultaneously making significant strides in other areas of optoelectronics. Photodetectors are one of the latest additions in an expanding list of applications of this fascinating family of materials. The extensive range of possible inorganic and hybrid perovskites coupled with their processing versatility and ability to convert external stimuli into easily measurable optical/electrical signals makes them an auspicious sensing element even for the high‐energy domain of the electromagnetic spectrum. Key to this is the ability of MHPs to accommodate heavy elements while being able to form large, high‐quality crystals and polycrystalline layers, making them one of the most promising emerging X‐ray and γ‐ray detector technologies. Here, the fundamental principles of high‐energy radiation detection are reviewed with emphasis on recent progress in the emerging and fascinating field of metal halide perovskite‐based X‐ray and γ‐ray detectors. The review starts with a discussion of the basic principles of high‐energy radiation detection with focus on key performance metrics followed by a comprehensive summary of the recent progress in the field of perovskite‐based detectors. The article concludes with a discussion of the remaining challenges and future perspectives.
About Me
Emmanuel Kymakis is a Full Professor at the Department of Electrical & Computer Engineering at the Hellenic Mediterranean University (HMU) and Director of the Institute of Emerging Technologies of the HMU Center for Research & Innovation. He earned his Ph.D. in electrical engineering from the University of Cambridge in 2003. His multidisciplinary research lies at the interface between nanotechnology and electrical engineering and is centered on the development of printed optoelectronic and photovoltaic devices. He has published more than 150 research articles, which have attracted over 13.000 citations and an h-index of 60, while he has an extensive experience in the management of research and industrial projects (EUR 9.5 M research funding, design and implementation of 67 MWp of PV parks). Ηe is also included in the list of the top 2% of scientists in their respective fields by citation impact (PLoS Biol 17(8), e3000384). He has been an honorary lecturer at UConn and a recipient of an Isaac Newton and an EPSRC studentship. He was named as a 2014 ChemComm Emerging Investigator and has received three National Excellence Awards. He has served as a member of the founding General Assembly of the Hellenic Foundation for Research & Innovation (HFRI), a member of the Engineering sectoral scientific council of the National Council for Research & Innovation of Greece (NCRI) and the work package leader of Energy Generation of the EU FET-Flagship Initiative Graphene.