Abstract
Conjugated small-molecule hole-transport materials (HTMs) with tunable energy levels are designed and synthesized for efficient perovskite solar cells. A champion device with efficiency of 16.2% is demonstrated using a dopant-free DERDTS-TBDT HTM, while the DORDTS-DFBT-HTM-based device shows an inferior performance of 6.2% due to its low hole mobility and unmatched HOMO level with the valence band of perovskite film.
| Original language | English |
|---|---|
| Pages (from-to) | 440-446 |
| Number of pages | 7 |
| Journal | Advanced Materials |
| Volume | 28 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 20 Jan 2016 |
| Externally published | Yes |
Keywords
- charge transport
- dopant-free small molecules
- hole conductors
- perovskite
- solar cells