Enhancing the Photovoltaic Performance by Tuning the Morphology of Polymer:PC₇₁BM Blends with a Commercially Available Nucleating Agent

Heng Lu; Yang Wu; Wenhua Li; Hedi Wei; Wei Ma; Zhishan Bo

doi:10.1021/acsami.5b06674

Enhancing the Photovoltaic Performance by Tuning the Morphology of Polymer:PC₇₁BM Blends with a Commercially Available Nucleating Agent

ACS Appl Mater Interfaces. 2015 Sep 2;7(34):18924-9. doi: 10.1021/acsami.5b06674. Epub 2015 Aug 24.

Authors

Heng Lu¹, Yang Wu², Wenhua Li¹, Hedi Wei¹, Wei Ma², Zhishan Bo¹

Affiliations

¹ Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University , Beijing 100875, China.
² State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, China.

PMID: 26288385
DOI: 10.1021/acsami.5b06674

Abstract

The use of a commercially available nucleating agent as the additive for the fabrication of polymer:PC71BM-based active layers by solution-processing can greatly enhance the power conversion efficiency (PCE) of bulk heterojunction polymer solar cells (BHJ PSCs). The enhancement of device performance is mainly due to the addition of nucleating agent, which is able to regulate the drying process of the active layer and decrease the oversized domain size of conjugated polymers. Via this effective strategy to optimize the film morphology, the designed device exhibits an enhancement as great as 30.8%.

Keywords: conjugated polymers; domain size; morphology control; nucleating agent; polymer solar cells.

Publication types

Letter
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.