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….Partners III, Room 127

Abay G. Dinku

Research Assistant Professor

NC State University, Department of Physics
851 Main Campus Dr., Raleigh NC 27606.

About

Dr. Dinku earned his PhD in 2006 in the Organic and Biomolecular Electronics division of Linköping University (Sweden), and he did his postdoctoral research in the Materials Research Institute of Hasselt University (Belgium) and in the Chemistry/Physics departments at UNC-Chapel Hill. He joined the Organic and Carbon Electronics Lab (ORaCEL) at NCSU, department of Physics, in October 2014.

Research interests

Dr. Dinku’s research is focused on understanding the working principles of organic bulk heterojunction solar cells and apply the knowledge thereof to fabricate optimized devices. His research involves, but not limited to, fabrication and characterization of organic solar cells, investigating the role of material structure-property relationships (on charge transport, recombination, interfacial charge transfer states, etc), and the critical role of interface buffer layers in organic inverted photovoltaic devices.

  • Organic optoelectronic devices
  • Charge transport in organic films and devices
  • Charge transfer states, defects
  • Printing semitransparent organic solar cells

Select Publications | Full list: Google Scholar link

Visit ResearchGate to download many of the papers in pdf.

L. Ye, Y. Xiong, S. Li, M. Ghasemi, N. Balar, J. Turner, A. Gadisa, J. Hou, B. T O’Connor, H. Ade, Precise Manipulation of Multilength Scale Morphology and Its Influence on Eco‐Friendly Printed All‐Polymer Solar Cells, Adv. Funct. Mater. 27, 1702016 (2017). link

J. Turner, A. Gadisa, Role of Near Substrate and Bulk Polymer Morphology on Out-of-Plane Space-Charge Limited Hole Mobility
ACS Appl. Mater. Interfaces, 8, 33019 (2016). link

M. Ghasemi, L. Ye, Q. Zhang, L. Yan, J.-H. Kim, O. Awartani, W. You, A. Gadisa, and H. Ade, Panchromatic Sequentially Cast Ternary Polymer Solar Cells
Adv. Mater. 29,1604603 (2017). link

L. Ye, Y. Xiong, H. Yao, A. Gadisa, H. Zhang, S. Li, M. Ghasemi, N. Balar, A. Hunt, B. T. O’Connor, J. Hou, and H. Ade, High Performance Organic Solar Cells Processed by Blade Coating in Air from a Benign Food Additive Solution, Chem. Mater. 28, 7451 (2016). link

Y. Hara, A. Gadisa, Y. Fu, T. Garvey, K. T. Vrouwenvelder, C. W. Miller, J. L. Dempsey, R. Lopez, Gains and Losses in PbS Quantum Dot Solar Cells with Submicron Periodic Grating Structures, J. Phys. Chem. C 120, 8005-8013 (2016). link

Y. Fu, A. Gadisa, Y. Hara, C. W. Miller, K. T. Vrouwenvelder, R. Lopez, Modeling photovoltaic performance in periodic patterned colloidal quantum dot solar cells, Optics express , 23, A779-A790 (2015). link

A. Gadisa, T. Hairfield, L. Alibabaei, C. L. Donley, E. T. Samulski, and R. Lopez, Solution processed Al-doped ZnO nanoparticles/TiOx composite for highly efficient inverted organic solar cells, ACS Appl. Mater. Interfaces 5, 8440 (2013). link

J. R. Tumbleston, A. Gadisa, Y. Liu, B. A. Collins, E. T. Samulski, R. Lopez, and H. Ade, Modifications in Morphology Resulting from Nanoimprinting Bulk Heterojunction Blends for Light Trapping Organic Solar Cell Designs,  ACS Appl. Mater. Interfaces 5, 8225 (2013). link

Y. Liu, C. Kirsch, A. Gadisa, M. Aryal, S. Mitran, E. T. Samulski and R. Lopez, Effects of nano-patterned versus simple flat active layers in upright organic photovoltaic devices, J. Phys. D: Appl. Phys. 46 (2013) 024008. link

A. Gadisa, Y. Liu, E. T. Samulski, Role of thin n-type metal-oxide interlayers in inverted organic solar cells, ACS Appl. Mater. Inter. 4, 3846 (2012). link

K. Vandewal, K. Tvingstedt, A. Gadisa, O. Inganäs, J. V. Manca, On the origin of the open-circuit voltage of polymer-fullerene solar cells, Nat. Mat. 8, 904 (2009). link

A. Gadisa, K. Tvingstedt, K. Vandewal, F. Zhang, J. V. Manca, O. Inganäs, Bipolar Charge Transport in Fullerene Molecules in a Bilayer and Blend of Polyfluorene Copolymer and Fullerene, Adv. Mater. 22, 1008 (2010). link