1. State Key Laboratory of Organic Electronics and Information Displays and Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology) Nanjing University of Posts and Telecommunications 9 Wenyuan Road Nanjing Jiangsu 210023 P. R. China
2. College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology) Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and Devices Nanjing University of Posts and Telecommunications 9 Wenyuan Road Nanjing Jiangsu 210023 P. R. China