研究目的
To improve the crystallinity and morphology of bulk heterojunction (BHJ) organic photovoltaic devices by introducing the conjugated polymer PBDTTPD-COOH as a third component into BHJ films of PTB7-Th:PC71BM and PffBT4T-2OD:PC71BM, thereby enhancing device performance and stability.
研究成果
The addition of PBDTTPD-COOH as a third component improves the crystallinity and morphology of BHJ films, leading to enhanced device performance and stability. The T80 lifetime values significantly increase in doped devices compared to binary solar cells.
研究不足
The study focuses on fullerene-based BHJ solar cells, which are limited in power conversion efficiency (PCE) compared to non-fullerene acceptors. The complexity increases with the addition of a third component, and the study does not explore the full range of possible D/A partners.
1：Experimental Design and Method Selection:
The study involved introducing PBDTTPD-COOH as a third component into BHJ films of PTB7-Th:PC71BM and PffBT4T-2OD:PC71BM to investigate its effects on crystallinity and morphology.
2：Sample Selection and Data Sources:
BHJ films were prepared with different weight ratios of PBDTTPD-COOH.
3：List of Experimental Equipment and Materials:
GISAXS/GIWAXS measurements were used to evaluate inner domain sizes and crystallinity; AFM was used to probe surface morphology.
4：Experimental Procedures and Operational Workflow:
Films were characterized using GISAXS/GIWAXS and AFM; device performance and stability were tested.
5：Data Analysis Methods:
GISAXS data were modeled within the framework of the distorted wave Born approximation (DWBA); GIWAXS data were analyzed using Gaussian fits.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
