Highly efficient, all-polymer solar cells prepared under meniscus-assisted coating method

• Over the last few years, all-polymer solar cells (all-PSCs) have actually been taken into consideration more likely to be solar devices for future applications as a result of their superb mechanical homes and also device security.

Various from the traditional manufacture of solar cell by spin coating (SC) approach, Prof. Wang Jingxia's group from the Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences (CAS) as well as Prof. Huo Lijun from Beihang University have developed a remedy printing strategy for meniscus-assisted-coating (MAC).

The strategy was proposed to prepare high-quality mix films with the maximized morphology of the active layer. The effectiveness of as-prepared all-PSCs is 15.53 percent from MAC, which was higher than prepared by the SC method (14.58 percent), owing to the much more purchased molecular packaging and far better nanofiber interpenetrating network framework for energetic layer prepared by MAC.

Pertinent outcomes have been published in Advanced Materials.

The scientists found that solution shear price greatly affects the three-phase get in touch with line geometric form, product crystallization kinetics and also phase separation dimension, and the crystallinity of energetic layer material.

At the same time, they have expanded the MAC method to the preparation of 1 × 1 cm2 devices with power conversion effectiveness (PCE) over 12 percent. Various active layer films with PCE > 15 percent are likewise prepared.

"This work not just supplies an easy as well as reliable remedy printing technique for the preparation of all-PSCs, yet also offers positive academic advice at different shear prices," said Prof. Wang.