Ke and Jiaonan’s work on energy landscape management in 2D/3D heterojunction for efficient perovskite solar cells has been published in Science Advances.
In this work, the hole transfer energy barriers is reduced both at heterojunctions and within 2D structures, and the preferable work function shift reduces charge accumulation at interface. Using poly(triarylamine) (PTAA) hole transporting layer, a solar cell with power conversion efficiency of 24.6% has been achieved, which is the highest among PTAA-based n-i-p devices. The devices exhibit greatly enhanced stability and reproducibility.
Letian Dou Group 