1. Physics Characterization and Simulations Lab Department of Physics School of Natural Sciences (SNS) National University of Sciences and Technology (NUST) Islamabad 54000 Pakistan
2. State Key Laboratory of Organic−Inorganic Composites Beijing Key Laboratory of Electrochemical Process and Technology for Materials Beijing University of Chemical Technology Beijing 100029 China
3. School of Chemical and Materials Engineering National University of Sciences and Technology (NUST) Islamabad 54000 Pakistan
4. Microelectronics Research Center The University of Texas at Austin Austin TX 78758 USA