| Literature DB >> 26588665 |
Yongsheng Liu1,2, Ziruo Hong1, Qi Chen1,2, Huajun Chen1, Wei-Hsuan Chang1,2, Yang Michael Yang1, Tze-Bin Song1,2, Yang Yang1,2.
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.Keywords: charge transport; dopant-free small molecules; hole conductors; perovskite; solar cells
Year: 2015 PMID: 26588665 DOI: 10.1002/adma.201504293
Source DB: PubMed Journal: Adv Mater ISSN: 0935-9648 Impact factor: 30.849