Industrial Kraft Lignin Based Binary Cathode Interface Layer Enables Enhanced Stability in High Efficiency Organic Solar Cells

Qilun Zhang*, Tiefeng Liu, Sebastian Wilken, Shaobing Xiong, Huotian Zhang, Iuliana Ribca, Mingna Liao, Xianjie Liu, Renee Kroon, Simone Fabiano, Feng Gao, Martin Lawoko, Qinye Bao*, Ronald Österbacka, Mats Johansson, Mats Fahlman*

*Korresponderande författare för detta arbete

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

4 Citeringar (Scopus)
25 Nedladdningar (Pure)

Sammanfattning

Herein, a binary cathode interface layer (CIL) strategy based on the industrial solvent fractionated LignoBoost kraft lignin (KL) is adopted for fabrication of organic solar cells (OSCs). The uniformly distributed phenol moieties in KL enable it to easily form hydrogen bonds with commonly used CIL materials, i.e., bathocuproine (BCP) and PFN-Br, resulting in binary CILs with tunable work function (WF). This work shows that the binary CILs work well in OSCs with large KL ratio compatibility, exhibiting equivalent or even higher efficiency to the traditional CILs in state of art OSCs. In addition, the combination of KL and BCP significantly enhanced OSC stability, owing to KL blocking the reaction between BCP and nonfullerene acceptors (NFAs). This work provides a simple and effective way to achieve high-efficient OSCs with better stability and sustainability by using wood-based materials.
OriginalspråkEngelska
Artikelnummer2307646
TidskriftAdvanced Materials
DOI
StatusE-pub före tryck - 9 okt. 2023
MoE-publikationstypA1 Tidskriftsartikel-refererad

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