1. Shenzhen Environmental Science and New Energy Technology Engineering LaboratoryTsinghua‐Berkeley Shenzhen Institute, Tsinghua UniversityShenzhenGuangdongPeople's Republic of China
2. Department of Electrical EngineeringTsinghua UniversityBeijingPeople's Republic of China
3. The Graduate School at ShenzhenTsinghua UniversityShenzhenGuangdongPeople's Republic of China