Two-in-one: cathode modification and improved solar cell blend stability through addition of modified fullerenes
Artikel i vetenskaplig tidskrift, 2016

The synthesis of dual purpose modified fullerenes with pyridine-as well as amine-functional groups is reported. Addition of these fullerenes to a polymer : fullerene bulk-heterojunction blend based on a thiophene-quinoxaline donor polymer is found to modify the active layer/cathode interface of inverted solar cells (glass/ITO/active layer/MoO3/Al). In particular the open-circuit voltage of devices is increased from 0.1 V to about 0.7 V, which results in a drastic rise in photovoltaic performance with a power conversion efficiency of up to 3%. At the same time, presence of the functionalised fullerene additives prevents the detrimental formation of micrometre-sized fullerene crystals upon annealing at 140 degrees C. As a result, the device performance is retained, which promises significantly increased thermal stability of the bulk-heterojunction blend nanostructure.

Författare

Zandra George

Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Y. X. Xia

Linkopings universitet

A. Sharma

University of South Australia

Camilla Lindqvist

Karlstads universitet

G. Andersson

Flinders University of South Australia

Olle Inganäs

Linkopings universitet

E. Moons

Karlstads universitet

Christian Müller

Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Mats Andersson

Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Journal of Materials Chemistry A

2050-7488 (ISSN)

Vol. 4 2663-2669

Ämneskategorier

Materialteknik

Kemi

DOI

10.1039/c5ta06420a