1. Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen518055, China
2. Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen518055, China
3. Research Institute of Tsinghua University in Shenzhen, Shenzhen518055, China
4. Puri Materials, Inc., Shenzhen518055, China