Herbert Kroemer, recipient of the 2000 Nobel Prize in Physics, famously said: “The interface is the device.” This insight is especially true for perovskite solar cells, where poorly controlled interfaces often lead to complex fabrication, inefficient charge transport, and severe nonradiative losses.
To address this challenge, the research team developed a “double molecular bridge” strategy using a newly designed functional additive, 4-F-PEAFa .
Uniquely, both bridges originate from the same multifunctional molecule, making the strategy both elegant and efficient.
Illustration: Double molecular bridges enable charge transport in perovskite solar cells
Key Results:
This breakthrough not only confirms Kroemer’s prediction— “the interface is the device” —but also opens a new avenue for interface engineering in perovskite photovoltaics: let molecules “build bridges” so charges can “fly.”
Authors and Affiliations:
The work was led by Qing Lian (SUSTech), Lina Wang (Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, formerly SUSTech), Guoliang Wang (University of Sydney), and Guojun Mi (SUSTech) as co-first authors. Co-corresponding authors include Bowei Li (Shanghai Jiao Tong University), Wei Zhang (University of Surrey), Guangfu Luo (SUSTech), Henry J. Snaith (University of Oxford), and Chun Cheng (SUSTech).
National Science Review
Experimental study