Details

Autor(en) / Beteiligte

• Zhang, Hao
• Wang, Xiaohui
• Yang, Liyan
• Zhang, Shaoqing
• Zhang, Yun
• He, Chang
• Ma, Wei
• Hou, Jianhui

Titel

Improved Domain Size and Purity Enables Efficient All‐Small‐Molecule Ternary Solar Cells

Ist Teil von

• Advanced materials (Weinheim), 2017-11, Vol.29 (42), p.n/a

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• An all‐small‐molecule ternary solar cell is achieved with a power conversion efficiency of 10.48% by incorporating phenyl‐C71‐butyric‐acid‐methyl ester (PC71BM) into a nonfullerene binary system. The addition of PC71BM is found to modulate the film morphology by improving the domain purity and decreasing the domain size. This modulation facilitates charge generation and suppresses charge recombination, as manifested by the significantly enhanced short‐circuit current density and fill factor. The results correlate the domain characteristics with the device performance and offer new insight from the perspective of morphology modulation for constructing efficient ternary devices. An all‐small‐molecule ternary solar cell is achieved with a power conversion efficiency of 10.48% by incorporating the phenyl‐C71‐butyric‐acid‐methyl ester (PC71BM) into a nonfullerene small‐molecule binary system. The addition of PC71BM is found to modulate the film morphology by improving the domain purity and decreasing the domain size. This facilitates charge generation and suppresses charge recombination.