1. «Recent Progress on Solution Based Transparent Conducting Electrodes» Dr. Fevzihan BAŞARIR 31/03/2016 Sofia

2. Contents 1.Recent Progress on Solution Based Transparent Electrode 2.Introduction to Biomaterials Group Focus Areas 3.Project Idea Offer on Colorimetric Biosensing

3. Contents 1.Recent Progress on Solution Based Transparent Electrode 2.Introduction to Biomaterials Group Focus Areas 3.Project Idea Offer on Colorimetric Biosensing

4. Background 4 Touch PanelOLEDs Solar cell  Transparent conducting electrodes (TCE) are a fundamental component in many modern devices  Increasing demand for the devices led to spurring demand for TCEs  Market for TCEs is expected to reach for $2.5 billion by 2025

5. Requirements for TCE 5 Major Low sheet resistance Low sheet resistance High transparency High transparency Minor Chemical inertness & stability Optical haze Mechanical property Mechanical property Adhesion

6. Materials for TCE 6 Indium tin oxide (ITO) Aluminum doped zinc oxide Fluorine doped tin oxide Market share of 97.6%  Transparent conducting oxides (TCO) are mainly utilized in the industry

7. Electronic Industry Concept 7  Need to develop novel printable solution based materials Conventional Electronics Flexible Electronics

8. Competing Materials AgNW Commercial acceptance Low sheet resistance Mechanical flexibility Silver migration Exposure to silver price AgNW Commercial acceptance Low sheet resistance Mechanical flexibility Silver migration Exposure to silver price CNTs Moderate conductivity Moderate transparency High mechanical flexibility Chemical residuals Adhesion to the substrate CNTs Moderate conductivity Moderate transparency High mechanical flexibility Chemical residuals Adhesion to the substrate Graphene Low to moderate sheet resistance Low cost High mechanical flexibility Graphene Low to moderate sheet resistance Low cost High mechanical flexibility

9. Our Approach Glass substrate Bilayer Multilayer O 2 plasma MWCNT-NH 2 MWCNT-COOH PSU PSU film Detaching PSU Drying

10. Characterization of CNT Multilayer n=0 n=4n=12 n=20

11. Morphology of CNT Multilayer 4 layer 12 layer 20 layer

12. Multilayer Transfer No change in sheet resistance after 100 times bending

13. Application of CNT Multilayer Flexible touch screen application

14. Contents 1.Recent Progress on Solution Based Transparent Electrode 2.Introduction to Biomaterials Group Focus Areas 3.Project Idea Offer on Colorimetric Biosensing

15. Focus Areas Biosensors Medical diagnosis from human breath MEMS based biosensors Implantable and wearable sensors Biomaterials Soft and hard tissues via Bioprinting and electrospinning New generation implants by Selective Laser Sintering Physical, Chemical and Biological Coatings Nano Carriers Theranostic nano carrier systems for cancer Cancer diagnosis via biomedical imaging

16. Contents 1.Recent Progress on Solution Based Transparent Electrode 2.Introduction to Biomaterials Group Focus Areas 3.Project Idea Offer on Colorimetric Biosensing

17. Colorimetric Biosensing-1 In developing countries, the problem of accessibility to health care is greatly exacerbated, little or no access to even the basic health services due to financial limitations, a shortage of skilled personnel, and a lack of and a lack of infrastructure In addition to basic medical tests and screening for chronic disease, affordable test kits for infectious diseases can be a life-saving intervention in many developing countries, where millions die every year due to inadequate diagnosis and these tests could help prevent epidemics from turning into pandemics Also rapid and low-cost methods of analysis for food safety and water quality, counterfeit medicine, and veterinary testing are also needed.

18. Colorimetric Biosensing-2 Integration with Consumer Electronic Devices Proper Surface Modification Development Methods Development of Novel Nanoparticles and Optical Enhancement

19. Acknowledgement