McMaster University
    Home   •    About Ayse    •    Research   •    People    •   Publications    •   Teaching    •    Facilities

Slide 3

Organic photovoltaic devices

Slide 21

Processes in OPVs

Slide 18

Organic device degradation

Slide 2
2D Diffraction maps of OPVs
(Turak et al. J. Renew. Sustain. Enger. 2 053103 (2010))
Slide 4

OPV decay curve

Slide 19
OPV architecture at the device, microstructure and molecular level (Turak et al. J. Renew. Sustain. Energ, 2 053103 (2010))
Slide 1

(Turak RSC Adv.3, 618 (2013))

Slide 8
Organic dewetting on ITO
(Turak RSC Adv. 3 6188 (2013))
Slide 12
Oligomer Morphological instability
(Heidkamp et al Proc. of SPIE Vol. 8915 891508 (2013))
Slide 9
Highly crystalline diindenoperylene growth on ITO
(Turak et al. J. Nano. Res. 14 125 (2011))
Slide 13
Approaches to DIP stabilization on ITO
(Heidkamp et al Proc. of SPIE Vol. 8915 891508 (2013)
Slide 17
Nanoparticle size controlled dispersions with reverse micelle depostion
(Aytun et al Nano Lett. 12 39 (2012))
Slide 15
Reverse micelle deposition process
(Ow Yang et al. Thin Solid Films (in Press))
Slide 5
Reverse micelle deposition of LiF nanoparticles on ITO modifiers work function
(Aytun et al. Nano Lett. 12 39 (2012))
Slide 7
Incorporation of solution processed LiF nanoparticles sol-LiF into OPV devices
(Turak et al. Appl. Phys. Lett. 100 253303 (2012))
Slide 23
Schematic of a) Monte Carlo and b) Molecular Dynamics modelling for Organic Molecules
Slide 11
Building "Point Clouds" from Ensembles of Molecules in Square Boundaries
(Diaz-Ortiz et al PCCP 16 (37), 20228 - 20235 (2014) )
Slide 16
Configuration particle density distributions for 4032 simulation runs of 2D organic molecule analogues
(Diaz-Ortiz et al PCCP 16 (37), 20228 - 20235 (2014) )
Slide 10
Planal Positional Probability and Configurations of organic molecules resulting from confinement effects
(Diaz-Ortiz et al PCCP 16 (37), 20228 - 20235 (2014) )
Slide 20
Microstructure control in organic thin films
(Nguyen et al. Proc. SPIE 7722, 772269 (2010))
Slide 14
Organic heterojunctions seperation using Fourier subtraction approcoach
(Turak et al. Nanotechnology 21 285705 (2010)
Slide 11
Reactions at metal/Alq3 interfaces
(Turak RSC Adv. 3, 6188 (2013), Turak et al Appl. Phys. Lett. 81, 766 (2002))

Welcome to the Turak Research Group!


My research is focused on interfacial engineering in organic optoelectronic devices (OLED, OPVs). We tune the morphology, chemistry, electronic states, and structure at electrode and donor-acceptor interfaces, and study order disorder transitions in semiconducting organic thin films.



Jan 2018 — Publication of the second volume of McMaster Journal of Engineering Physics!

Nov 2017 — Congrats to Diana who presented her summer work at the Engineering Physics Seminar series! Great work!

Oct 2017 — Congrats to Bertha for the successful publication of her paper on plasma etching of graphene in Carbon!

Sept 2017  — Congrats to Matt for successfully defending his thesis

Sept 2017 — Welcome Colin Beswick new 4H04 student!

Sept 2017 — Thanks to the summer students for a great summer


  • Click here for more information on current research.

  • Organic semiconductor chemistry and structure, primarily for optoelectronics (organic light emitting diodes (OLEDs) and organic solar cells (OPVs))

  • Electrode interface engineering in organic optoelectronic devices: chemical, morphological, electronic

  • Degradation at interfaces in organic devices

  • Nanostructured electrodes and interlayers for high performance organic devices

  • Geometric packing and phase transition modelling for organic molecule morphology

  • Structural effects on surface activity, contact enhancement, and device performance

  • Surface and interface physics;


McMaster   S. i. Lee, G. j. Yun, S. E. Lee, C. G. Jhun, K. Liang, G. Hanta, L. Kojovic, A. Turak , W. Y. Kim “Blue phosphorescent organic light-emitting diodes with SnOx nano-particles dispersed on ITO anode” 5th NanoToday Conference, Hawaii, US (2017)
McMaster   D. Dumitrescu, "Hexagonal Ordered Arrays and the Synthesis of Tin Oxide Nanoparticles”, Engineering Physics Seminar Series, McMaster (2017) Nov. 29th
McMaster   A. Turak, “Interface engineering in organic optoelectronics” Physics & Astronomy Department Colloquium, University of Western Ontario, London, ON (2017) Oct. 19th

A. Turak “Solution processed nanostructures for organic optoelectronics” Printed/Flexible Electronics Symposium, University of Western Ontario, London, On (2017) Sept 14th

Group meetings

Tuesdays at 2:30 pm JHE 265

Graduate Students
M. Bumstead
K. Liang
E. van Wynsberghe
B. Hui
G. Hanta

Summer Students
Celine Michael
Stacey Mark
Nia Nijiati
Lazar Kojovic
Haley Glavina

Email for schedules/locations and
more information

Future students


Contact Us Department of Engineering Physics © 2016