High-performance ternary polymer solar cells from a structurally similar polymer alloy
Artikel i vetenskaplig tidskrift, 2017

High-efficiency ternary polymer solar cells (PSCs) are fabricated by using two donor polymers (PBDTTPD and PBDTTT-C-T) with similar polymer backbones and complementary absorption and PC71BM as the acceptor. A high power conversion efficiency (PCE) of 9.3% is achieved with a high short-circuit current density (J(sc)) of 17.2 mA cm(-2). The enhanced J(sc) and PCEs are mainly attributed to the broadened photoresponse of the ternary blend. Good miscibility of the two donor polymers is found due to the similar polymer main chains, leading to the desired morphology between the donors and PC71BM in the ternary blends. The trend of open-circuit voltage (V-oc) variations indicates the formation of a polymer alloy in this ternary blend. Our work demonstrates that using two donor polymers with similar backbone structures is a rational strategy for realizing high-performance ternary PSCs.

Power Conversion Efficiency

11-Percent Efficiency

Fullerene

Nonfullerene Acceptors

Ir Sensitization

Chains

Energy-Transfer

Small-Molecule

Författare

W. F. Shen

Qingdao University

Chinese Academy of Sciences

W. Chen

Qingdao University

Chinese Academy of Sciences

D. Q. Zhu

Chinese Academy of Sciences

J. D. Zhang

Chinese Academy of Sciences

Xiaofeng Xu

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

H. X. Jiang

Chinese Academy of Sciences

T. Wang

Chinese Academy of Sciences

Ergang Wang

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

R. Q. Yang

Chinese Academy of Sciences

Journal of Materials Chemistry A

2050-7488 (ISSN)

Vol. 5 24 12400-12406

Ämneskategorier

Materialkemi

DOI

10.1039/c7ta02891a

Mer information

Senast uppdaterat

2018-10-02