Search Results - "Chochos, Christos"

How the structural deviations on the backbone of conjugated polymers influence their optoelectronic properties and photovoltaic performance by Chochos, Christos L., Choulis, Stelios A.

“…► This review focused on conjugated polymers that used in organic photovoltaics. ► Two approaches have been employed for lowering the band gap of conjugated…”
Get full text

The role of exciton lifetime for charge generation in organic solar cells at negligible energy-level offsets by Classen, Andrej, Chochos, Christos L., Lüer, Larry, Gregoriou, Vasilis G., Wortmann, Jonas, Osvet, Andres, Forberich, Karen, McCulloch, Iain, Heumüller, Thomas, Brabec, Christoph J.

“…Organic solar cells utilize an energy-level offset to generate free charge carriers. Although a very small energy-level offset increases the open-circuit…”
Get full text

Rational Design of New Conjugated Polymers with Main Chain Chirality for Efficient Optoelectronic Devices: Carbo[6]Helicene and Indacenodithiophene Copolymers as Model Compounds by Gedeon, Clement, Del Rio, Natalia, Furlan, Francesco, Taddeucci, Andrea, Vanthuyne, Nicolas, Gregoriou, Vasilis G., Fuchter, Matthew J., Siligardi, Giuliano, Gasparini, Nicola, Crassous, Jeanne, Chochos, Christos L.

“…The unique properties of conjugated polymers (CPs) in various optoelectronic applications are mainly attributed to their different self‐assembly processes and…”
Get full text

Highly Efficient Solid-State Near-infrared Organic Light-Emitting Diodes incorporating A-D-A Dyes based on α,β-unsubstituted “BODIPY” Moieties by Zampetti, Andrea, Minotto, Alessandro, Squeo, Benedetta Maria, Gregoriou, Vasilis G., Allard, Sybille, Scherf, Ullrich, Chochos, Christos L., Cacialli, Franco

“…We take advantage of a recent breakthrough in the synthesis of α,β -unfunctionalised 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) moieties, which we…”
Get full text

High efficiency blue organic light-emitting diodes with below-bandgap electroluminescence by Vasilopoulou, Maria, Mohd Yusoff, Abd. Rashid bin, Daboczi, Matyas, Conforto, Julio, Gavim, Anderson Emanuel Ximim, da Silva, Wilson Jose, Macedo, Andreia Gerniski, Soultati, Anastasia, Pistolis, George, Schneider, Fabio Kurt, Dong, Yifan, Jacoutot, Polina, Rotas, Georgios, Jang, Jin, Vougioukalakis, Georgios C., Chochos, Christos L., Kim, Ji-Seon, Gasparini, Nicola

“…Blue organic light-emitting diodes require high triplet interlayer materials, which induce large energetic barriers at the interfaces resulting in high device…”
Get full text

Current status, challenges and future outlook of high performance polymer semiconductors for organic photovoltaics modules by Chochos, Christos L., Spanos, Michael, Katsouras, Athanasios, Tatsi, Elisavet, Drakopoulou, Sofia, Gregoriou, Vasilis G., Avgeropoulos, Apostolos

“…[Display omitted] Organic photovoltaic (OPV) modules have currently reached power conversion efficiencies (PCEs) of approximately 5% (single junctions devices)…”
Get full text

Infrared Organic Photodetectors Employing Ultralow Bandgap Polymer and Non‐Fullerene Acceptors for Biometric Monitoring by Jacoutot, Polina, Scaccabarozzi, Alberto D., Zhang, Tianyi, Qiao, Zhuoran, Aniés, Filip, Neophytou, Marios, Bristow, Helen, Kumar, Rhea, Moser, Maximilian, Nega, Alkmini D., Schiza, Andriana, Dimitrakopoulou‐Strauss, Antonia, Gregoriou, Vasilis G., Anthopoulos, Thomas D., Heeney, Martin, McCulloch, Iain, Bakulin, Artem A., Chochos, Christos L., Gasparini, Nicola

“…Recent efforts in the field of organic photodetectors (OPD) have been focused on extending broadband detection into the near‐infrared (NIR) region. Here, two…”
Get full text

Adjusting the energy of interfacial states in organic photovoltaics for maximum efficiency by Gasparini, Nicola, Camargo, Franco V. A., Frühwald, Stefan, Nagahara, Tetsuhiko, Classen, Andrej, Roland, Steffen, Wadsworth, Andrew, Gregoriou, Vasilis G., Chochos, Christos L., Neher, Dieter, Salvador, Michael, Baran, Derya, McCulloch, Iain, Görling, Andreas, Lüer, Larry, Cerullo, Giulio, Brabec, Christoph J.

“…A critical bottleneck for improving the performance of organic solar cells (OSC) is minimising non-radiative losses in the interfacial charge-transfer (CT)…”
Get full text

Photophysics of Molecular-Weight-Induced Losses in Indacenodithienothiophene-Based Solar Cells by Gasparini, Nicola, Katsouras, Athanasios, Prodromidis, Mamantos I., Avgeropoulos, Apostolos, Baran, Derya, Salvador, Michael, Fladischer, Stefanie, Spiecker, Erdmann, Chochos, Christos L., Ameri, Tayebeh, Brabec, Christoph J.

“…The photovoltaic performance and optoelectronic properties of a donor–acceptor copolymer are reported based on indacenodithienothiophene (IDTT) and…”
Get full text

Highly Efficient Indoor Organic Solar Cells by Voltage Loss Minimization through Fine-Tuning of Polymer Structures by Singh, Ranbir, Chochos, Christos L, Gregoriou, Vasilis G, Nega, Alkmini D, Kim, Min, Kumar, Manish, Shin, Sang-Chul, Kim, Sang Hyeon, Shim, Jae Won, Lee, Jae-Joon

“…Herein, we report a detailed study on the optoelectronic properties, photovoltaic performance, structural conformation, morphology variation, charge carrier…”
Get full text

Reducing Voltage Losses in Organic Photovoltaics Requires Interfacial Disorder Management by Wang, Rong, Han, Leng, Li, Ning, Chochos, Christos L., Gregoriou, Vasilis G., Lüer, Larry, Brabec, Christoph J.

“…Thanks to the introduction of non‐fullerene acceptors, efficiencies of organic photovoltaics are now approaching 20%. Closing the gap with inorganic…”
Get full text

An Alternative Strategy to Adjust the Recombination Mechanism of Organic Photovoltaics by Implementing Ternary Compounds by Gasparini, Nicola, Salvador, Michael, Fladischer, Stefanie, Katsouras, Athanasios, Avgeropoulos, Apostolos, Spiecker, Erdmann, Chochos, Christos L., Brabec, Christoph J., Ameri, Tayebeh

“…Trap‐assisted recombination is one of the main loss mechanisms in bulk‐heterojunction (BHJ) solar cells. Results suggest that introducing a near infrared (NIR)…”
Get full text

Systematic Analysis of Polymer Molecular Weight Influence on the Organic Photovoltaic Performance by Katsouras, Athanasios, Gasparini, Nicola, Koulogiannis, Chrysanthos, Spanos, Michael, Ameri, Tayebeh, Brabec, Christoph J., Chochos, Christos L., Avgeropoulos, Apostolos

“…The molecular weight of an electron donor‐conjugated polymer is as essential as other well‐known parameters in the chemical structure of the polymer, such as…”
Get full text

Aggregation-Driven Photoinduced α‑C(sp3)–H Bond Hydroxylation/C(sp3)–C(sp3) Coupling of Boron Dipyrromethene Dye in Water Reported by Near-Infrared Emission by Shahu, Adelajda, Petropoulos, Vasilis, Saridakis, Emmanuel, Petrakis, Vyron S., Ioannidis, Nikolaos, Mitrikas, George, Schiza, Andriana, Chochos, Christos L., Kasimati, Eleni-Marina, Soultati, Anastasia, Nika, Maria Christina, Thomaidis, Nikolaos S., Fakis, Mihalis, Maiuri, Margherita, Cerullo, Giulio, Pistolis, George

“…Molecular aggregation is a powerful tool for tuning advanced materials’ photophysical and electronic properties. Here we present a novel potential for the…”
Get full text

Impact of the Alkyl Side Chains on the Optoelectronic Properties of a Series of Photovoltaic Low-Band-Gap Copolymers by Biniek, Laure, Fall, Sadiara, Chochos, Christos L, Anokhin, Denis V, Ivanov, Dimitri A, Leclerc, Nicolas, Lévêque, Patrick, Heiser, Thomas

“…The design of novel low-band-gap conjugated polymers with appropriate frontier orbital energy levels and good charge transport is needed to improve the…”
Get full text

High-Performance Organic Photodetectors from a High-Bandgap Indacenodithiophene-Based π‑Conjugated Donor–Acceptor Polymer by Benavides, Cindy Montenegro, Murto, Petri, Chochos, Christos L, Gregoriou, Vasilis G, Avgeropoulos, Apostolos, Xu, Xiaofeng, Bini, Kim, Sharma, Anirudh, Andersson, Mats R, Schmidt, Oliver, Brabec, Christoph J, Wang, Ergang, Tedde, Sandro F

“…A conjugated donor–acceptor polymer,…”
Get full text

Synthesis and Characterization of Hybrid Materials Derived from Conjugated Copolymers and Reduced Graphene Oxide by Lazanas, Alexandros Ch, Katsouras, Athanasios, Spanos, Michael, Manesi, Gkreti-Maria, Moutsios, Ioannis, Vashurkin, Dmitry V, Moschovas, Dimitrios, Gioti, Christina, Karakassides, Michail A, Gregoriou, Vasilis G, Ivanov, Dimitri A, Chochos, Christos L, Avgeropoulos, Apostolos

“…In this study the preparation of hybrid materials based on reduced graphene oxide (rGO) and conjugated copolymers is reported. By tuning the number and…”
Get full text

Influence of the Electron Deficient Co-Monomer on the Optoelectronic Properties and Photovoltaic Performance of Dithienogermole-based Co-Polymers by Yau, Chin Pang, Fei, Zhuping, Ashraf, Raja Shahid, Shahid, Munazza, Watkins, Scott E., Pattanasattayavong, Pichaya, Anthopoulos, Thomas D., Gregoriou, Vasilis G., Chochos, Christos L., Heeney, Martin

“…A series of donor–acceptor (D–A) conjugated polymers utilizing 4,4‐bis(2‐ethylhexyl)‐4H‐germolo[3,2‐b:4,5‐b′]dithiophene (DTG) as the electron rich unit and…”
Get full text

Pulmonary Drug Delivery through Responsive Materials by Politakos, Nikolaos, Gregoriou, Vasilis G., Chochos, Christos L.

“…Drug delivery is essential to provide correct treatments in many ways. The critical points in any drug delivery method are patient compliance, maximum efficacy…”
Get full text

An Electron-Transporting Thiazole-Based Polymer Synthesized Through Direct (Hetero)Arylation Polymerization by Chávez, Patricia, Bulut, Ibrahim, Fall, Sadiara, Ibraikulov, Olzhas A, Chochos, Christos L, Bartringer, Jérémy, Heiser, Thomas, Lévêque, Patrick, Leclerc, Nicolas

“…In this work, a new -type polymer based on a thiazole-diketopyrrolopyrrole unit has been synthesized through direct (hetero)arylation polycondensation. The…”
Get full text