Impact of Process Parameter Modification on Poly(3-hexylthiophene) Film Morphology and Charge Transport

iii ACKNOWLEDGEMENTS I would like to make special thanks to my advisor Elsa Reichmanis who gave me remarkable opportunities by allowing research in the group. I will remember her as a person with deep patience and understanding. Her optimism and support were great cheers to me. Also I share thanks to my committee, Prof. and Yulin Deng, whom I am very proud to be associated with. I will remember Professor Hess who provided me an advice in making decisions for my future. With his help, I decided to further pursue research in graduate school. Professor Koros and Deng were very generous and responded without any feeling of troublesome to my irregular requests. Many thanks and best wishes to all of our Reichmanis' research group members, without your support, the research may have been impossible to start. Especially, Mincheol Chang, have been a direct mentor to me. He taught me necessary concepts to be successful in my career. The hard-work we had in the laboratory will be remembered as rewarding memories. Thank you and Ashwin for your support in this group. It has been a pleasure sharing and working together with all of you. Most importantly, I thank my God, Jesus Christ who owns and shepherds my life. In every moment, I believe that my life is and will be in God's hands. I wish to thank my family and friends, with their encouragement and support I managed to joyfully finish this study. I am very proud to be a community of Student For Christ (SFC) and Imitators of Christ Church Atlanta (ICCA). I cannot speak of my Georgia Tech life without mentioning them. I share great appreciations to you all for your love and memories.