Contact

All Stories

  1. Charge transport control via polymer polymorph modulation in ternary organic photovoltaic composites

    Article • Journal of Materials Chemistry A, January 2016, Royal Society of Chemistry

    Dr. Panagiotis E. Keivanidis

  2. Understanding the Light Soaking Effects in Inverted Organic Solar Cells Functionalized with Conjugated Macroelectrolyte Electron-Collecting Interlayers

    Article • Advanced Science, December 2015, Wiley

    Dr. Panagiotis E. Keivanidis

  3. Charge versus Energy Transfer Effects in High-Performance Perylene Diimide Photovoltaic Blend Films

    Article • ACS Applied Materials & Interfaces, November 2015, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  4. Synthesis and characterization of light-absorbing cyclopentadithiophene-based donor-acceptor copolymers

    Article • Polymer International, September 2015, Wiley

    Dr. Panagiotis E. Keivanidis

  5. Elucidating the Impact of Molecular Packing and Device Architecture on the Performance of Nanostructured Perylene Diimide Solar Cells

    Article • ACS Applied Materials & Interfaces, April 2015, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  6. Correction to Well-Defined Star-Shaped Conjugated Macroelectrolytes as Efficient Electron-Collecting Interlayer for Inverted Polymer Solar Cells

    Article • ACS Applied Materials & Interfaces, March 2015, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  7. Well-Defined Star-Shaped Conjugated Macroelectrolytes as Efficient Electron-Collecting Interlayer for Inverted Polymer Solar Cells

    Article • ACS Applied Materials & Interfaces, January 2015, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  8. Determining the Efficiency of Fast Ultrahigh-density Writing of Low-Conductivity Patterns on Semiconducting Polymers

    Article • MRS Proceedings, January 2015, Cambridge University Press

    Dr. Panagiotis E. Keivanidis

  9. The impact of thienothiophene isomeric structures on the optoelectronic properties and photovoltaic performance in quinoxaline based donor–acceptor copolymers

    Article • Polymer Chemistry, January 2015, Royal Society of Chemistry

    Dr. Panagiotis E. Keivanidis

  10. Triplet–Triplet Annihilation-Induced Up-Converted Delayed Luminescence in Solid-State Organic Composites: Monitoring Low-Energy Photon Up-Conversion at Low Temperatures

    Article • The Journal of Physical Chemistry C, July 2014, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  11. On the role of aggregation effects in the performance of perylene-diimide based solar cells

    Article • Organic Electronics, July 2014, Elsevier

    Dr. Panagiotis E. Keivanidis

  12. On the role of temperature in the triplet-fusion induced low-energy photon up-converted delayed luminescence of a solid state composite

    Article • June 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Panagiotis E. Keivanidis

  13. Phosphorimetric Characterization of Solution-Processed Polymeric Oxygen Barriers for the Encapsulation of Organic Electronics

    Article • The Journal of Physical Chemistry C, February 2014, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  14. Carrier motion in as-spun and annealed P3HT:PCBM blends revealed by ultrafast optical electric field probing and Monte Carlo simulations

    Article • Physical Chemistry Chemical Physics, January 2014, Royal Society of Chemistry

    Dr. Panagiotis E. Keivanidis

  15. Monomeric perylene diimide derivatives can lead to efficient, solution-processed organic solar cells

    Article • Journal of Materials Chemistry A, January 2014, Royal Society of Chemistry

    Dr. Panagiotis E. Keivanidis

  16. Triple bulk heterojunctions as means for recovering the microstructure of photoactive layers in organic solar cell devices

    Article • Solar Energy Materials and Solar Cells, January 2014, Elsevier

    Dr. Panagiotis E. Keivanidis

  17. Effect of Local and Global Structural Order on the Performance of Perylene Diimide Excimeric Solar Cells

    Article • ACS Applied Materials & Interfaces, November 2013, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  18. Fast ultrahigh-density writing of low-conductivity patterns on semiconducting polymers

    Article • Nature Communications, November 2013, Springer Science + Business Media

    Dr. Panagiotis E. Keivanidis

  19. Visualizing charge separation in bulk heterojunction organic solar cells

    Article • Nature Communications, August 2013, Springer Science + Business Media

    Dr. Panagiotis E. Keivanidis

  20. Improving the layer morphology of solution-processed perylene diimide organic solar cells with the use of a polymeric interlayer

    Article • Organic Photonics and Photovoltaics, January 2013, De Gruyter

    Dr. Panagiotis E. Keivanidis

  21. Gravure printing inverted organic solar cells: The influence of ink properties on film quality and device performance

    Article • Solar Energy Materials and Solar Cells, October 2012, Elsevier

    Dr. Panagiotis E. Keivanidis

  22. Correlating Emissive Non-Geminate Charge Recombination with Photocurrent Generation Efficiency in Polymer/Perylene Diimide Organic Photovoltaic Blend Films

    Article • Advanced Functional Materials, March 2012, Wiley

    Dr. Panagiotis E. Keivanidis

  23. Ultrafast Transient Optical Studies of Charge Pair Generation and Recombination in Poly-3-Hexylthiophene(P3ht):[6,6]Phenyl C61 Butyric Methyl Acid Ester (PCBM) Blend Films

    Article • The Journal of Physical Chemistry B, December 2011, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  24. Correction to “Electron-Exchange Assisted Photon Energy Up-Conversion in Thin Films of π-Conjugated Polymeric Composites”

    Article • The Journal of Physical Chemistry Letters, October 2011, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  25. Electron-Exchange-Assisted Photon Energy Up-Conversion in Thin Films of π-Conjugated Polymeric Composites

    Article • The Journal of Physical Chemistry Letters, August 2011, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  26. Room-Temperature Phase Demixing in Bulk Heterojunction Layers of Solution-Processed Organic Photodetectors: the Effect of Active Layer Ageing on the Device Electro-optical Properties

    Article • Advanced Functional Materials, March 2011, Wiley

    Dr. Panagiotis E. Keivanidis

  27. Gravure printing for three subsequent solar cell layers of inverted structures on flexible substrates

    Article • Solar Energy Materials and Solar Cells, February 2011, Elsevier

    Dr. Panagiotis E. Keivanidis

  28. Delayed Luminescence Spectroscopy of Organic Photovoltaic Binary Blend Films: Probing the Emissive Non-geminate Charge Recombination

    Article • Advanced Materials, September 2010, Wiley

    Dr. Panagiotis E. Keivanidis

  29. The Dependence of Device Dark Current on the Active-Layer Morphology of Solution-Processed Organic Photodetectors

    Article • Advanced Functional Materials, September 2010, Wiley

    Dr. Panagiotis E. Keivanidis

  30. Effect of multiple adduct fullerenes on charge generation and transport in photovoltaic blends with poly(3-hexylthiophene-2,5-diyl)

    Article • Journal of Polymer Science Part B Polymer Physics, September 2010, Wiley

    Dr. Panagiotis E. Keivanidis

  31. Dependence of Charge Separation Efficiency on Film Microstructure in Poly(3-hexylthiophene-2,5-diyl):[6,6]-Phenyl-C 61 Butyric Acid Methyl Ester Blend Films

    Article • The Journal of Physical Chemistry Letters, February 2010, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  32. Perylene Tetracarboxydiimide as an Electron Acceptor in Organic Solar Cells: A Study of Charge Generation and Recombination

    Article • The Journal of Physical Chemistry C, December 2009, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  33. Effects of Layer Thickness and Annealing of PEDOT:PSS Layers in Organic Photodetectors

    Article • Macromolecules, September 2009, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  34. Inherent Photon Energy Recycling Effects in the Up‐Converted Delayed Luminescence Dynamics of Poly(fluorene)–PtIIoctaethyl Porphyrin Blends

    Article • ChemPhysChem, September 2009, Wiley

    Dr. Panagiotis E. Keivanidis

  35. All-solution based device engineering of multilayer polymeric photodiodes: Minimizing dark current

    Article • Applied Physics Letters, April 2009, American Institute of Physics

    Dr. Panagiotis E. Keivanidis

  36. Improved Performance of Perylene-Based Photovoltaic Cells Using Polyisocyanopeptide Arrays

    Article • Macromolecules, March 2009, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  37. Time-resolved photoluminescence study of low-energy emission mechanisms in oligofluorene and polyfluorene films

    Article • Polymer, December 2008, Elsevier

    Dr. Panagiotis E. Keivanidis

  38. Intermolecular Interactions of Perylene diimides in Photovoltaic Blends of Fluorene Copolymers: Disorder Effects on Photophysical Properties, Film Morphology and Device Efficiency

    Article • Advanced Functional Materials, October 2008, Wiley

    Dr. Panagiotis E. Keivanidis

  39. X-ray stability and response of polymeric photodiodes for imaging applications

    Article • Applied Physics Letters, January 2008, American Institute of Physics

    Dr. Panagiotis E. Keivanidis

  40. Organic semiconductor devices for X-ray imaging

    Article • Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, September 2007, Elsevier

    Dr. Panagiotis E. Keivanidis

  41. Thermally Stable Blue Emitting Terfluorene Block Copolymers

    Article • The Journal of Physical Chemistry, March 2006, American Chemical Society (ACS)

    Dr. Panagiotis E. Keivanidis

  42. Low-threshold amplified spontaneous emission in thin films of poly(tetraarylindenofluorene)

    Article • Applied Physics Letters, December 2005, American Institute of Physics

    Dr. Panagiotis E. Keivanidis

  43. Photophysical Characterization of Light-Emitting Poly(indenofluorene)s

    Article • ChemPhysChem, August 2005, Wiley

    Dr. Panagiotis E. Keivanidis

  44. Cover Picture: Enhanced Operational Stability of the Up-Conversion Fluorescence in Films of Palladium-Porphyrin End-Capped Poly(pentaphenylene) (ChemPhysChem 7/2005)

    Article • ChemPhysChem, July 2005, Wiley

    Dr. Panagiotis E. Keivanidis

  45. Enhanced Operational Stability of the Up-Conversion Fluorescence in Films of Palladium-Porphyrin End-Capped Poly(pentaphenylene)

    Article • ChemPhysChem, July 2005, Wiley

    Dr. Panagiotis E. Keivanidis

  46. Upconversion photoluminescence in poly(ladder-type-pentaphenylene) doped with metal (II)-octaethyl porphyrins

    Article • Applied Physics Letters, February 2005, American Institute of Physics

    Dr. Panagiotis E. Keivanidis

  47. Up-Conversion Photoluminescence in Polyfluorene Doped with Metal(II)–Octaethyl Porphyrins

    Article • Advanced Materials, December 2003, Wiley

    Dr. Panagiotis E. Keivanidis

  48. TiO2(Fe3+) nanostructured thin films with antibacterial properties

    Article • Thin Solid Films, June 2003, Elsevier

    Dr. Panagiotis E. Keivanidis

  49. Influence of Dendronization on Spectral Diffusion and Aggregation in Conjugated Polymers

    Article • Advanced Functional Materials, February 2003, Wiley

    Dr. Panagiotis E. Keivanidis