RESEARCH ASSISTANT AHMET KARATAY    
Name : AHMET
Surname : KARATAY
E-Mail : akaratay@eng.ankara.edu.tr
Phone Number : 0(312) 203 35 09
Title : RESEARCH ASSISTANT
Unit : FACULTY OF ENGINEERING
Department : ENGINEERING OF PHYSICS
Personal Information

Personal Data:

Surname, First name:  KARATAY, Ahmet

Address:                         Ankara University,

Department of Engineering Physics,

Tandogan - Ankara / TURKEY 06100

Date of Birth:                 26/01/1988

Place of Birth:                Bursa / Turkey

Marital Status:               Marriage  

Email:                             akaratay@eng.ankara.edu.tr

Web Sites:                      www.omag.ankara.edu.tr

Education:

09/11 -12/15                   Ph. D. Ankara University / Graduate School of Natural and Applied ScienceDepartment of Engineering Physics – Nonlinear Optics Group(3.71/4.00)

Ph. D. Thesis: Effects Of Heavy Atom Binding To Aza-Bodipy Compounds On Nonlinear Absorption, Fluorescence And Ultrafast Spectroscopic Properties

Advisor: Prof. Dr. Ayhan ELMALI

09/09- 06/11                   M. Sc. Ankara University / Graduate School of Natural and Applied ScienceDepartment of Engineering Physics – Nonlinear Optics Group(3.60/4.00)

Master Thesis: Nonlinear Optical Properties of In0.15Ga0.85Se Single Crystal and Their Amorphous Thin Films

Advisor: Prof. Dr. Ayhan ELMALI

09/04-06/09                    B. Sc.Ankara University / Faculty of Engineering / Department of Physics Engineer (3.78/4.00)

Graduation Thesis: Z-scan and spin coating techniques

Research Focuses

·       Nonlinear Optics

·       Semiconductor crystals and thin films

·       Ultrafast Pump-Probe Spectroscopy

·       Nanoparticle Synthesis by Laser Ablation Method

·       Photonics

·       Energy Transfer Mechanism of Organic Molecules

·       Plasmon-Exciton Coupling Mechanism

·       Two Photon Absorption Properties of Organic Molecules


Skills

Technical skills

·       MS Office

·       User of Spectra Physics Spitfire Pro XP + Tsunami Femtosecond Laser System

·       User of Spectra Physics Helios Ultrafast Transient Spectroscopy System

·       User of Spectra Physics TOPAS Optical Parametric Amplifier UV-I to Near Infrared (200-2800 nm)

·       User of Continuum Leopard Picosecond Laser System

·       User of Brilliant Nanosecond Laser System

·       User of J. A. Woollam M2000V Spectroscopic Ellipsometry System

·       User of VaksisEkin Vacuum Thermal Evaporation System

·       User of SCS G3 Spin Coating System

Language Skills

English

Scholars/ Honor Degrees:

2008-2011             TUBITAK 1001 Project Scholarship “Fitalosiyaninlerin Polimer Matrisdeki İnce Filmlerinin Optik Sınırlayıcı Özelliklerinin İncelenmesi” (project number: 107T708)

06/2009                  Ankara University / Third degree of the engineering of faculty

06/2009                  Ankara University / Faculty of Engineering/Physics engineering best student of the department

2005-2009             Ankara University / Faculty of Engineering – High Honor Degree

all semester

Projects:

02/16 – 02/17        Ankara University, Project Coordinator “The investigation of linear and nonlinear optical properties of amorphous thin films obtained from CuIn0.7Ga0.3(SexTe1-x)2 bulk crystals.” (project number: 16H0443003)

 

Publications:

38) 08/19                Yu Dong, Andrey A. Sukhanov, Jianzhang Zhao, Ayhan Elmali, Xiaolian Li, Bernhard Dick, Ahmet Karatay*, and Violeta K. Voronkova, “Spin−Orbit Charge-Transfer Intersystem Crossing (SOCT-ISC) in Bodipy-Phenoxazine Dyads: Effect of Chromophore Orientation and Conformation Restriction on the Photophysical Properties”,  THE JOURNAL OF PHYSICAL CHEMISTRY C, DOI: 10.1021/acs.jpcc.9b06170

 

37) 07/19                Yingjie Zhao, Andrey A Sukhanov, Ruomeng Duan, Ayhan Elmali, Yuqi Hou, Jianzhang Zhao, Gagik G Gurzadyan, Ahmet Karatay, Violeta K Voronkova, Chen Li “Study of the Spin–Orbit Charge Transfer Intersystem Crossing of Perylenemonoimide–Phenothiazine Compact Electron Donor/Acceptor Dyads with Steady-State and Time-Resolved Optical and Magnetic Spectroscopies” JOURNAL OF PHYSICAL CHEMISTRY C Volume: 123, Pages: 18270-18282

 

36) 07/19                Gökhan Sevinç, Mehtap Özgür, Betül Küçüköz, Ahmet Karatay, Hakan Aslan, Halil Yılmaz “Synthesis and spectroscopic properties of a novel“turn off”fluorescentprobe: Thienyl-pyridine substituted BODIPY” JOURNAL OF LUMİNESCENCE Volume: 211, Pages: 334-340

 

35) 06/19                Hüseyin Ertap, Mustafa Yüksek, Ahmet Karatay, Ayhan Elmali, Mevlüt Karabulut “Linear and nonlinear absorption, SHG and photobleaching behaviors of Dy doped GaSe single crystal” CHINESE JOURNAL OF PHYSICS Volume: 59, Pages: 465-472

 

34) 04/19                Karatay, Ahmet “Controlling of two photon absorption properties by altering composition ratio of GaSxSe1− x crystals” OPTICS & LASER TECHNOLOGY Volume: 111, Pages: 6-10

 

33) 03/19                Muhammad Imran, Andrey A. Sukhanov, Zhijia Wang, Ahmet Karatay, Jianzhang Zhao, Zafar Mahmood, Ayhan Elmali, Violeta K. Voronkova, Mustafa Hayvali, Yong Heng Xing, and Stefan Weber “Electronic Coupling and Spin Orbit Charge Transfer Intersystem Crossing (SOCT-ISC) in Phenothiazine-Perylene Compact Electron Donor/Acceptor Dyads” JOURNAL OF PHYSICAL CHEMISTRY C Volume: 123, Pages: 7010–7024

 

32) 03/19                Fatih Mehmet Dumanoğulları, Yusuf Tutel, Betül Küçüköz, Gökhan Sevinç, Ahmet Karatay, Halil Yılmaz, Mustafa Hayvalı, Ayhan Elmalı “Investigation of Ultrafast Energy Transfer Mechanism in BODIPY–Porphyrin Dyad System” JOURNAL OF PHOTOCHEMİSTRY AND PHOTOBİOLOGY A: CHEMİSTRY Volume: 373, Pages: 116-121

 

31) 03/19                Sebile Işık Büyükekşi, Ahmet Karatay, Nursel Acar, Betül Küçüköz, Ayhan Elmali, Abdurrahman Şengül “Electron/Energy Transfer Studies on Hybrid Materials Based on Dinuclear Coordination Compounds of Twisted Perylene Diimide” JOURNAL OF PHOTOCHEMİSTRY AND PHOTOBİOLOGY A: CHEMİSTRY Volume: 372, Pages: 226-234

 

30) 01/19                Fangfang Zhong, Jianzhang Zhao, Mustafa Hayvali, Ayhan Elmali, and Ahmet Karatay “Effect of Molecular Conformation Restriction on the Photophysical 2 Properties of N^N Platinum(II) Bis(ethynylnaphthalimide) 3 Complexes Showing Close-Lying 3MLCT and 3LE Excited States” INORGANIC CHEMISTRY Volume: 58, Pages: 1850-1861

 

29) 12/18                Karatay, Ahmet; Donar, Yusuf Osman; Sinağ, Ali; Elmali, Ayhan “Controlling the nonlinear absorption characteristics of TiO2/carbon nanocomposites on films” OPTICS & LASER TECHNOLOGY Volume: 108, Pages: 510-514

 

28) 02/18                Karatay, Ahmet; Yüksek, Mustafa; Ertap, Hüseyin; Elmali, Ayhan; Karabulut, Mevlüt “Enhancing the blue shift of SHG signal in GaSe:B/Ce crystal” OPTICS & LASER TECHNOLOGY Volume: 99, Pages: 392-395

 

27) 04/18                Büyükekşi, Sebile Işık; Karatay, Ahmet; Acar, Nursel; Küçüköz, Betül; Elmali, Ayhan; Şengül, Abdurrahman “Syntheses and studies of electron/energy transfer of new dyads based on an unsymmetrical perylene diimide incorporating chelating 1,10-phenanthroline and its corresponding square-planar complexes with dichloroplatinum(II) and dichloropalladium(II )” DALTON TRANSACTIONS Volume: 47, Pages: 7422-7430

26) 12/17                Hussain, Mushraf; Zhao, Jianzhang; Yang, Wenbo; Zhong, Fangfang; Karatay, Ahmet; Yaglioglu, H Gul; Akhüseyin Yildiz, Elif; Hayvali, Mustafa “Intersystem crossing and triplet excited state properties of thionated naphthalenediimide derivatives” JOURNAL OF LUMINESCENCE Volume: 192, Pages: 211-217

 

25) 11/17                Karatay, Ahmet; Küçüköz, Betül; Pekdemir, Sami; Onses, Mustafa Serdar; Elmali, Ayhan “Size and structure dependent ultrafast dynamics of plasmonic gold nanosphere heterostructures on poly (ethylene glycol) brushes” OPTICAL MATERIALS Volume: 73, Pages: 83-88

 

24) 11/17                Karatay, Ahmet; Küçüköz, Betül; Çankaya, Güven; Ates, Aytunc; Elmali, Ayhan “The effect of Se/Te ratio on transient absorption behavior and nonlinear absorption properties of CuIn 0.7 Ga 0.3 (Se 1− x Te x) 2 (0≤ x≤ 1) amorphous semiconductor thin films” OPTICAL MATERİALS Volume: 73, Pages: 20-24

 

23) 09/17                Sakir, Menekse; Pekdemir, Sami; Karatay, Ahmet; Küçüköz, Betül; Ipekci, Hasan H; Elmali, Ayhan; Demirel, Gokhan; Onses, M Serdar “Fabrication of Plasmonically Active Substrates Using Engineered Silver Nanostructures for SERS Applications” ACS APPLIED MATERIALS & INTERFACES Volume:9 Pages: 39795-39803

 

 

22) 07/17                Khalily, Mohammad Aref; Bakan, Gokhan; Kucukoz, Betul; Topal, Ahmet Emin; Karatay, Ahmet; Yaglioglu, H Gul; Dana, Aykutlu; Guler, Mustafa Ozgur “Fabrication of Supramolecular n/p-Nanowires via Coassembly of Oppositely Charged Peptide-Chromophore Systems in Aqueous Media” ACS NANO Volume: 11, Pages: 6881-6892

 

21) 06/17                Wang, Zhijia; Zhao, Jianzhang; Barbon, Antonio; Toffoletti, Antonio; Liu, Yan; An, Yonglin; Xu, Liang; Karatay, Ahmet; Yaglioglu, Halime Gul; Akhuseyin Yildiz, Elif; Hayvali, Mustafa “Radical Enhanced Intersystem Crossing (EISC) in New Bodipy Derivatives and Application for Efficient Triplet-Triplet Annihilation Upconversion” JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Volume: 139, Pages: 7831–7842

 

20) 05/17                ElKabbash, Mohamed; R Rashed, Alireza; Kucukoz, Betul; Nguyen, Quang; Karatay, Ahmet; Yaglioglu, Gul; Ozbay, Ekmel; Caglayan, Humeyra; Strangi, Giuseppe “Ultrafast transient optical loss dynamics in exciton–plasmon nano-assemblies” NANOSCALE Volume: 19, Pages: 6558-6566

 

19) 04/17                Yuksek, Mustafa; Karatay, Ahmet; Ertap, Hüseyin; Elmali, Ayhan; Karabulut, Mevlut “Frequency conversion, nonlinear absorption and carrier dynamics of GaSe: B/Er crystals” OPTICAL MATERIALS Volume: 66, Pages: 137-141

 

18) 11/16                Balci, Sinan; Kucukoz, Betul; Balci, Osman; Karatay, Ahmet; Kocabas, Coskun; Yaglioglu, H. Gul “Tunable plexcitonic nanoparticles: a model system for studying plasmon–exciton interaction from the weak to the ultrastrong coupling regime” ACS PHOTONICS Volume: 11, Pages: 2010–2016

 

17) 10/16                Karatay, Ahmet; Yuksek, Mustafa; Ertap, Hüseyin; Mak, Ali Kemal; Karabulut, Mevlüt; Elmali, Ayhan “Influence of boron concentration on nonlinear absorption and ultrafast dynamics in GaSe crystals” OPTICAL MATERIALS Volume: 60, Pages: 74-80

16) 08/16                Cui,Xiaoneng;  Zhao, Jianzhang;  Karatay, Ahmet;  Yaglioglu, Gul;  Hayvali,Mustafa; Kucukoz, Betul “Ru(bpy)3[PF6]2 Complex with Rhodamine Unit: Synthesis, Photophysical Properties and Application in Acid-Controllable Triplet-Triplet Annihilation Upconversion” EUROPEAN JOURNAL OF INORGANIC CHEMISTRY Volume: 32, Pages: 5079-5088

 

15) 04/16               Yang , Wenbo; Zhao, Jianzhang; Sonn, Christoph; Escudero, Daniel; Karatay, Ahmet; Yaglioglu, Halime Gul; Kucukoz, Betul; Hayvali, Mustafa; Li, Chen; Jacquemin, Denis “Efficient Intersystem Crossing in Heavy atom-Free Perylenebisimide Derivatives”JOURNAL OF PHYSICAL CHEMISTRY C Volume: 120 Pages: 10162–10175.

 

14) 04/16               Kucukoz, Betul; Sevinc, Gokhan; Yildiz, Elif; Karatay, Ahmet; Zhong, Fangfang, Yılmaz, Halil; Tutel, Yusuf; Hayvali, Mustafa; Zhao, Jizanzhang; Yaglioglu, H. Gul “Enhancement of Two Photon Absorption Properties and Intersystem Crossing by Charge Transfer in Pentaaryl Boron-Dipyrromethene (BODIPY) Derivatives” PHYSICAL CHEMISTRY CHEMICAL PHYSICS Volume: 18 Pages: 13546-13553.

 

13) 02/16               Akhuseyin, Elif; Türkmen, Onur;Kucukoz, Betul; Yılmaz, Halil; Karatay, Ahmet; Sevinç, Gökhan; Xu, Kejing; Hayvali, Mustafa; Yaglioglu; H. Gul “Two Photon Absorption Properties of Four Coordinated Transition Metal Complexes of Tetraaryl-Azadipyrromethene Compounds” PHYSICAL CHEMISTRY CHEMICAL PHYSICS Volume: 18 Pages: 4451- 4459.

 

12) 11/15               Karatay, Ahmet; Miser, M. Ceren; Cui, Xiaoneng; Kucukoz, Betul; Yılmaz, Halil; Sevinç, Gökhan; Akhüseyin, Elif; Wu, Xueyan; Hayvali, Mustafa; Yaglioglu, H. Gul; Zhao, Jianzhang; Elmali, Ayhan“The effect of heavy atom to two photon absorption properties and intersystem crossing mechanism in aza-boron-dipyrromethene compounds” DYES AND PIGMENT Volume:122 Pages: 286- 294.

 

11) 08/15               Zhong, Fangfang; Karatay, Ahmet; Zhao, Liang; Zhao, Jianzhang; He, Cheng; Zhang, Caishun; Yaglioglu, HalimeGul; Elmali, Ayhan; Kucukoz, Betul; Hayvali, Mustafa“Broad-Band NN Pt(II) BisacetylideVisible Light Harvesting Complex with HeterolepticBodipyAcetylide Ligands” INORGANIC CHEMISTRY Volume: 54 Pages: 7803- 7817.

 

10) 08/15               Yang, Wenbo; Karatay, Ahmet; Zhao, Jianzhang; Song, Jian; Zhao, Liang; Xing, Yongheng; Zhang, Caishun; He, Cheng; Yaglioglu, HalimeGul; Hayvali, Mustafa; Elmali, Ayhan; Kucukoz, Betul“Near - IR Broadband-Absorbing trans –BisphosphinePt(II) Bisacetylide Complexes: Preparation and Study of the Photophysics” INORGANIC CHEMISTRY Volume: 54 Pages: 7492–7505.

 

9) 04/15                 Guo, Song; Xu, Liang; Xu, Kejing; Zhao, Jianzhang; Kucukoz, Betul;Karatay, Ahmet; Yaglioglu, Gul; Hayvali, Mustafa; Elmali, Ayhan “Bodipy-C60 triple hydrogen bonding assembly as heavy atom-free triplet photosensitizers: preparation and study of the singlet/triplet energy transfer” CHEMICAL SCIENCE Volume: 6 Pages: 3724-3737.

 

8) 03/15                 Mahmood, Zafar; Xu, Kejing; Kucukoz, Betul; Cui, Xiaoneng; Zhao, Jianzhang; Wang, Zhijia; Karatay, Ahmet; Yaglioglu, HalimeGul; Hayvali, Mustafa; Elmali, Ayhan “DiiodoBodipy-PerylenebisimideDyad/Triad: Preparation and Study of the Intramolecular and Intermolecular Electron/Energy Transfer” JOURNAL OF ORGANIC CHEMISTRY Volume: 80 Pages: 3036- 3049.

 

7) 09/14                 Jia, Huiru; Kucukoz, Betul; Xing,Yongheng; Majumdar,Poulomi; Zhang,Caishun;Karatay, Ahmet;Yaglioglu, Gul;Elmali, Ayhan;Zhao, Jianzhang, Hayvali, Mustafa “trans-Bis(alkylphosphine) platinum(II)-alkynyl complexes showing broadband visible light absorption and long-lived triplet excited states” JOURNAL OF MATERIAL CHEMISTRY C Volume: 2 Pages: 9720-9736.

 

6) 08/14                 Balci, Sinan; Kocabas, Coskun; Kucukoz, Betul; Karatay, Ahmet; Akhuseyin, Elif; Yaglioglu, H. Gul; Elmali, Ayhan;“Probing ultrafast energy transfer between excitons and plasmons in the ultrastrong coupling regime”APPLIED PHYSICS LETTERS Volume:105 Issue: 5 Article Number: 051105.

 

5) 03/14                 Ma, Jie; Yuan, Xiaolin; Kucukoz, Betul; Li, Shengfu; Zhang, Caishun; Majumdar, Poulomi; Karatay, Ahmet; Li, Xiaohuan; Yaglioglu, H. Gul; Elmali, Ayhan; Zhao, Jianzhang; Hayvali, Mustafa “Resonance energy transfer-enhanced rhodamine-styrylBodipy dyad triplet photosensitizers” JOURNAL OF MATERIALS CHEMISTRY C Volume:2 Issue: 20 Pages: 3900-3913.

 

4) 10/14                 Guo, Song; Ma, Lihua; Zhao, Jianzhang ; Kucukoz, Betul; Karatay, Ahmet; Hayvali, Mustafa; Yaglioglu, H. Gul; Elmali, Ayhan “BODIPY triads triplet photosensitizers enhanced with intramolecular resonance energy transfer (RET): broadband visible light absorption and application in photooxidation” CHEMICAL SCIENCE Volume: 5 Issue: 2 Pages: 489-500.

 

3) 02/13                 Isık, Pınar; Karatay, Ahmet; Yaglioglu, H. Gul; Elmali, Ayhan; Kurum, Ulas; Ates, Aytunc; Gasanly, Nizami "The effect of film thickness, Se/S ratio and annealing temperature on the nonlinear absorption behaviors in amorphous GaSexS1_x (0≤ x ≤ 1) thin films" OPTICS COMMUNICATIONS Volume: 288 Issue:    Pages: 107-113

 

2) 03/12                 Karatay, Ahmet; Yaglioglu H. Gul; Elmali, Ayhan; Parlak, Mehmet; Karaagac, Hüseyin "Thickness-dependent nonlinear absorption behaviors in polycrystalline ZnSe thin films" OPTICS COMMUNICATIONS Volume: 285   Pages: 1471-1475 

 

1) 06/11                 Karatay, Ahmet; Aksoy, Çağla; Yağlıoğlu, H. Gül; Elmalı, Ayhan; Kürüm, Ulaş; Ateş, Aytunç; Gasanly, Nizami “The nonlinear and saturable absorption characteristics of Ga0.90In0.10Se and Ga0.85In0.15Se semiconductor crystals and their amorphous thin films” JOURNAL OF OPTICS Volume: 13 Issue:  Pages:075203

 

Conference/Poster Presentations:

2019                       Bilir Gökhan,Yüksek Mustafa, Karatay Ahmet, Elmali Ayhan “Nonlinear Optical Properties of Tellurite-based Glasses” ICRES 2019 - International Conference on Research in Education and Science, İzmir/Turkey.

2018                       Ertap Hüseyin, Yüksek Mustafa, Karatay Ahmet, Elmali Ayhan, Karabulut Mevlüt “Structural and Optical Properties of Undoped, Pr and Nd Doped GaSe Single Crystals” 2nd International Congress on Semiconductor Materials Devices 2018 (ICSMD2018), Ardahan/Turkey.

2018                       Bilir Gökhan,Yüksek Mustafa, Karatay Ahmet, Elmali Ayhan “Nonlinear Optical Properties Of Telluriteglasses Modified With Different Amountand Type Of Network Modifiers” TFD34-turkish physical society 34th international physics congress 2018, Bodrum/Turkey.

2017                       Sinan Balci, Betül Küçüköz, Osman Balcı, Ahmet Karatay, Coşkun Kocabas, H. Gul Yaglioglu, Ayhan Elamli “Ultrafast Energy Transfer Between Excitons and Plasmons from Weak to Ultrastrong Coupling Regime” SPIE Nanoscience + Engineering 6-10 August 2017, Sun Diego, California, United States.

2017                       Alireza Rahimi Rashed, Mohamed El Kabbash, Betül Küçüköz, Quang Nguyen, Ahmet Karatay, H. Gul Yaglioglu, Giuseppe Strangi, Ekmel Özbay, Humeyra Çaglayan, “Ultrafast Transient dynamics of optical loss mitigation in aggregated gain-plasmon hybrid systems” SPIE Nanoscience + Engineering 6-10 August 2017, Sun Diego, California, United States.

2017                       Khalily, Mohammad Aref; Kucukoz, Betul; Karatay, Ahmet; Yaglioglu, H Gul; Guler, Mustafa Ozgur “Fabrication of Supramolecular n/p-Nanowires via Coassembly of Oppositely Charged Peptide-Chromophore Systems in Aqueous Media” 253rd National Meeting of the American-Chemical-Society (ACS) on Advanced Materials, Technologies, Systems, and Processes, APR 02-06, 2017, San Francisco, CA

2017                       Mustafa Yüksek, Ahmet Karatay, Hüseyin Ertap, Ayhan Elmali Mevlüt Karabulut, “Enhancing of Blue Shift at SHG Signal From B-Doped GaSe by Ce Doping” Turkish Physics Society 33nd International Physics Congress, September 6-10,Bodrum/Turkey.

2017                       Hüseyin Ertap, Mustafa Yüksek, Ahmet Karatay, Ayhan Elmali Mevlüt Karabulut, “Second Harmonic Generation and Nonlinear Optical Properties of GaSe:B/Er Crystals” Turkish Physics Society 33nd International Physics Congress, September 6-10,Bodrum/Turkey.

2017                       Hussain, Mushraf; Zhao, Jianzhang; Yang, Wenbo; Zhong, Fangfang; Karatay, Ahmet; Yaglioglu, H Gul; Akhüseyin Yildiz, Elif; Hayvali, Mustafa “Intersystem crossing and triplet excited state properties of thionated naphthalenediimide derivatives” FOTONİK 2016 | 18. Ulusal Optik, Elektro-Optik ve Fotonik Çalıştayı, Bilkent Üniversitesi.

2017                       Kucukoz, Betul; Sevinc, Gokhan; Yildiz, Elif; Karatay, Ahmet; Zhong, Fangfang, Yılmaz, Halil; Tutel, Yusuf; Hayvali, Mustafa; Zhao, Jizanzhang; Yaglioglu, H. Gul “Enhancement of Two Photon Absorption Properties and Intersystem Crossing by Charge Transfer in Pentaaryl Boron-Dipyrromethene (BODIPY) Derivatives” FOTONİK 2016 | 18. Ulusal Optik, Elektro-Optik ve Fotonik Çalıştayı, Bilkent Üniversitesi.

2017                       Wang, Zhijia; Zhao, Jianzhang; Barbon, Antonio; Toffoletti, Antonio; Liu, Yan; An, Yonglin; Xu, Liang; Karatay, Ahmet; Yaglioglu, Halime Gul; Akhuseyin Yildiz, Elif; Hayvali, Mustafa “Radical Enhanced Intersystem Crossing (EISC) in New Bodipy Derivatives and Application for Efficient Triplet-Triplet Annihilation Upconversion” FOTONİK 2016 | 18. Ulusal Optik, Elektro-Optik ve Fotonik Çalıştayı, BilkentÜniversitesi.

2016                       Mustafa Yüksek, Ahmet Karatay, Hüseyin Ertap, Mevlüt Karabulut, Ayhan Elmali “The effects of Boron doping on frequency conversion of semiconducting GaSe crystals” 2nd International Advanced and Functional Materials Technologies (AFMAT) (/)(Yayın No:3133590)

2016                       Alireza Rahimi Rashed, Mohamed El Kabbash, Betül Küçüköz, Quang  Nguyen, Ahmet Karatay, H. Gul Yaglioglu, Ekmel Özbay, Humeyra  Çaglayan, Giuseppe Strangi “Investigating Ultrafast Dynamics of Plasmonic Ohmic Loss mitigation in Gain-Plasmon Nanocomposite Polymeric Film.” Nanoplasm  Cetrato (CS) - Italy (/)(Yayın No:3145209)

2015                       Betul Kucukoz, Huiru Jia, Yongheng Xing, Poulomi Majumdar, Caishun  Zhang, Ahmet Karatay, H. Gul Yaglioglu, Ayhan Elmali, Jianzhang  Zhao, Mustafa Hayvalı “Trans-Bis(Alkylphosphine) Platinum(II)-Alkynyl Complexes Showing Broadband Visible Light Absorption and Long-Lived Triplet Excited States” 17. National Optic, Electro-Optic and Photonic Conference, Ankara University, 2015.

2015                       Ahmet Karatay , M. Ceren Miser , Xiaoneng Cui , Betül Küçüköz , Halil Yılmaz , Gokhan Sevinç , Elif Akhüseyin , Xueyan Wu , Mustaf Hayvali, H. Gul Yaglioglu, Jianzhang Zhao , Ayhan Elmali. “The Effect Of Heavy Atom To Two Photon Absorptıon Propertıes And Intersystem Crossıng Mechanısm In Azaboron-Dıpyrromethene Compounds”, 17. National Optic, Electro-Optic and Photonic Conference, ANKARA UNIVERSITY, 2015.

2014                       Ahmet Karatay, Jie Ma, Xiaolin Yuan, Song Guo, Lihua Ma,Jianzhang Zhao, Betül Küçüköz, Shengfu Li, Caishun Zhang, Poulomi Majumdar, Xiaohuan Li, H. Gul Yaglioglu, Mustafa Hayvalı and Ayhan Elmali, “Resonance Energy Transfer-Enhanced Rhodamine–Styryl Bodipy Dyad And Bodipy Triads Triplet Photosensitizers”, 16. National Optic, Electro-Optic and Photonic Conference, KOCAELİ UNIVERSITY, 2014.

2014                       Elif Akhüseyin, Sinan Balci, Coşkun Kocabas, Betül Küçüköz, Ahmet Karatay, H. Gul Yaglioglu, ve Ayhan Elmali, “Probing Ultrafast Energy Transfer Between Excitons And Plasmons In The Ultrastrong Coupling Regime”, 16. National Optic, Electro-Optic and Photonic Conference, KOCAELİ UNIVERSITY, 2014.

2013                       Ahmet Karatay, Pınar Işık, Ulaş Kürüm, Çağla Aksoy, H. Gul Yaglioglu, Mustafa Yüksek, Ayhan Elmali, Aytunç Ateş, Mehmet Parlak, Hakan Karaağaç, Mevlüt Karabulut, Gasan M. Mamedov, Nizami Gasanly, “The Effect Of Film Thickness And Doping On The Nonlinear And Saturable Absorption Behaviour Of Semiconductor Thin Films”, 15. National Optic, Electro-Optic and Photonic Conference, ASELSAN, 2013.

2013                       Elif Akhüseyin, Ahmet Karatay, Betül Küçüköz , Halil Yılmaz, Onur Türkmen, Mustafa Hayvalı, H. Gül Yağlıoğlu, Ayhan Elmali, “Tetraarilazadipirometen Bileşiklerinin Metal Komplekslerinin Doğrusal Olmayan Optik Özelliklerinin İncelenmesi”, 15. National Optic, Electro-Optic and Photonic Conference, ASELSAN, 2013.