| Literature DB >> 25495025 |
Huiqiong Zhou1, Yuan Zhang, Cheng-Kang Mai, Jason Seifter, Thuc-Quyen Nguyen, Guillermo C Bazan, Alan J Heeger.
Abstract
The intrinsic acidic nature of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole-transporting layer (HTL) induces interfacial protonation and limits the device performance in organic solar cells based on basic pyridylthiadiazole units. By utilizing a pH neutral, water/alcohol soluble conjugated polyelectrolyte CPE-K as the HTL in p-DTS(PTTh2)2:PC71BM solar cells, a 60% enhancement in PCE has been obtained with an increased V(bi), reduced R(s), and improved charge extraction. These effects originate from the elimination of interfacial protonation and energy barrier compared with the PEDOT:PSS HTL.Entities:
Keywords: bulk heterojunctions; hole-transporting layers; interface engineering; interfacial interaction; organic solar cells
Year: 2014 PMID： 25495025 DOI： 10.1021/nn505378m
Source DB: PubMed Journal: ACS Nano ISSN： 1936-0851 Impact factor: 15.881