Related Experiment Video
Updated: Jan 30, 2026

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
Published on: March 19, 2017
Fluoro- and Amino-Functionalized Conjugated Polymers as Electron Transport Materials for Perovskite Solar Cells with
Li Tian1, Zhicheng Hu1,2, Xiaocheng Liu1
1Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , P. R. China.
Abstract:
We report here novel bifunctionalized electron transport materials (ETMs) that can improve the efficiency and stability of perovskite solar cells (PVSCs) simultaneously. By functionalizing n-type conjugated polymers with fluoro and amino side chains, PN, PN-F25%, and PN-F50% with varied contents of fluoro and amino side chains are prepared. It is found that the amino side chains in ETMs efficiently improve the interface contact and electron collection of PVSCs, with improved power conversion efficiency from 14.0% for PC61BM-based devices to more than 17% for PN- and PN-F25%-based devices. Moreover, the fluoro side chains endow these polymers with excellent hydrophobic properties, which largely enhance their water-resistance capabilities. ETMs with the increased content of fluoro side chains can substantially improve the water resistance of perovskite layers, with a significant improvement in the stability of PVSCs. Our results indicate that the fluoro- and amino-bifunctionalized strategy is a promising method to design ETMs for high-performance and stable PVSCs.
Related Concept Videos
Electron Transport Chains
The ETC is comprised of...
Stability of Conjugated Dienes
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
Conjugated Proteins
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Amino acids
Phase II Reactions: Sulfation and Conjugation with α-Amino Acids
The Electron Transport Chain
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...

