1. State Key Laboratory of Electronic Thin Films and Integrated Devices and School of Microelectronics and Solid State Electronics; University of Electronic Science and Technology of China; Chengdu 610054 China
2. Analog Technology Development; Texas Instruments; 13121 TI Blvd MS-367 Dallas TX 75243 USA
3. Center for Multidimensional Carbon Materials; Institute of Basic Science, and Department of Chemistry; Ulsan National Institute of Science and Technology; Ulsan 689798 Republic of Korea