Affiliation: | 1. Department of Chemical Engineering, Stanford University, Stanford, California 94305, USA;2. Present address: Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China;3. Department of Electrical Engineering, Stanford University, Stanford, California 94305, USA;4. Display Device Laboratory, Materials and Device Institute, Samsung Advanced Institute of Technology, Samsung Electronics Co., Ltd., Youngin 446‐712, Korea |