1. Department of Electronic EngineeringThe Chinese University of Hong Kong New Territories Hong Kong
2. Center for Computational Energy ResearchDepartment of Applied PhysicsEindhoven University of Technology 5600 MB Eindhoven The Netherlands
3. Instrumental Analysis and Research CenterSun Yat‐sen University Guangzhou 510275 China
4. Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of EducationDepartment of ChemistryTsinghua University Beijing 100084 China