Frontispiz: Intramolecular Electric Field Construction in Metal Phthalocyanine as Dopant-Free Hole Transporting Material for Stable Perovskite Solar Cells with >21 % Efficiency

Zefeng Yu

State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China

These authors contributed equally to this work.

Luyao Wang

School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 P. R. China

These authors contributed equally to this work.

Xijiao Mu

State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China

These authors contributed equally to this work.

Prof. Chun-Chao Chen

School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 P. R. China

Prof. Yiying Wu

Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH, 43210 USA

Corresponding Author

Prof. Jing Cao

• [email protected]

• orcid.org/0000-0003-3978-911X

State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China

Prof. Yu Tang

State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China