Alcohol-soluble polyfluorenes containing dibenzothiophene-S,S-dioxide segments for cathode interfacial layer in PLEDs and PSCs

- We synthesize alcohol-soluble PFs comprising dibenzothiophene-S,S-dioxide segments.
- Dibenzothiophene-S,S-dioxide can improve cathode-interfacial-modification ability.
- Inserting the PFs as CIL, the PLEDs and PSCs display excellent performances.