Affiliation: | 1. Center for Polymers and Organic Solids, University of California Santa Barbara, Santa Barbara, CA, USA;2. National Synchrotron Radiation Research Center, Hsinchu, Taiwan;3. Materials Department and Materials Research Laboratory, University of California Santa Barbara, Santa Barbara, CA, USA;4. Solar & Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia |