High Efficiency Blue Phosphorescent Organic Light Emitting Diodes
HIGH EFFICIENCY BLUE PHOSPHORESCENT ORGANIC LIGHT EMITTING DIODES By NEETU CHOPRA A DISSERTATION PRESENTED TO THE GRADUATE SCHOOL OF THE UNIVERSITY OF FLORIDA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY UNIVERSITY OF FLORIDA 2009 1 © 2009 Neetu Chopra 2 To my Family and Sushant 3 ACKNOWLEDGMENTS A dissertation is almost never a solitary effort and neither is this one. As Ludwig Wittgenstein wisely said “knowledge in the end is based on acknowledgement”. Hence, writing this dissertation would be meaningless without thanking everyone who has contributed to it in one way or the other. First and foremost, my thanks are due to my advisor Dr. Franky So, without whose guidance and encouragement none of this work would have been possible. He has been a great advisor and has always been patient through the long paths of struggle finally leading towards significant results. This work is a fruit born out of many stimulating discussions with Dr. So and my group members Jaewon Lee, Kaushik Roy Choudhury, Doyoung Kim, Dongwoo song, Cephas Small, Alok Gupta, Galileo Sarasqueta, Jegadesan Subbiah, Mike Hartel, Mikail Shaikh, Song Chen, Pieter De Somer, Verena Giese, Daniel S. Duncan, Jiyon Song, Fredrick Steffy, Jesse Manders, Nikhil Bhandari and their contribution to these pages cant be acknowledged enough. I am especially thankful to Dr. Jiangeng Xue, Dr. Paul Holloway and their group members Sang Hyun Eom, Ying Zheng, Sergey Maslov and Debasis Bera who were an indispensable part of our DOE project team. I am also indebted to Dr. Rajiv Singh, Dr. Henry Hess and Dr.
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