Abstract
The interface material is an indispensable part of perovskite solar cells (PSCs) because of its special functions. In this work, a conjugated polyelectrolyte, PTPADT-SO3Na, was synthesized and introduced to the inverted PSCs as a hole-transporting layer (HTL). PTPADT-SO3Na exhibits a close level of valence band to perovskites and good conductivity because of a self-doping effect. Accordingly, the PTPADT-SO3Na device shows excellent performances with a maximum efficiency of 18.15%, which is better than that of the device with a typical HTL [poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)]. Meanwhile, the PTPADT-SO3Na PSC exhibits outstanding stability in an ambient atmosphere (humidity of 50%) and heating condition (85 °C).
| Original language | English |
|---|---|
| Pages (from-to) | 11724-11731 |
| Number of pages | 8 |
| Journal | ACS Applied Energy Materials |
| Volume | 3 |
| Issue number | 12 |
| DOIs | |
| State | Published - 28 Dec 2020 |
| Externally published | Yes |
Keywords
- High performance
- Interface
- Inverted perovskite solar cell
- P-type conjugated polymer
- Self-doping effect