A Simple 3,4-Ethylenedioxythiophene Based Hole-Transporting Material for Perovskite Solar Cells

✍ Scribed by Li, Hairong; Fu, Kunwu; Hagfeldt, Anders; Grätzel, Michael; Mhaisalkar, Subodh G.; Grimsdale, Andrew C.

• Book ID: 121695433
• Publisher: John Wiley and Sons
• Year: 2014
• Tongue: English
• Weight: 837 KB
• Volume: 53
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.201310877

✦ Synopsis

We report a novel electron-rich molecule based on 3,4-ethylenedioxythiophene (H101). When used as the holetransporting layer in a perovskite-based solar cell, the powerconversion efficiency reached 13.8 % under AM 1.5G solar simulation. This result is comparable with that obtained using the well-known hole transporting material 2,2',7,7'-tetrakis(N,N-di-p-methoxyphenylamine)-9,9'-spirobifluorene (spiro-OMeTAD). This is the first heterocycle-containing material achieving > 10 % efficiency in such devices, and has great potential to replace the expensive spiro-OMeTAD given its much simpler and cheaper synthesis.