Overcoming efficiency and stability limits in water-processing nanoparticular organic photovoltaics by minimizing microstructure defects

Journal article


Publication Details

Author(s): Xie C, Heumüller T, Gruber W, Tang X, Classen A, Schuldes I, Bidwell M, Späth A, Fink R, Unruh T, Mcculloch I, Li N, Brabec C
Journal: Nature Communications
Publisher: NATURE PUBLISHING GROUP
Publication year: 2018
Volume: 8
Journal issue: 13
ISSN: 2041-1723
Language: English


Abstract

There is a strong market driven need for processing organic photovoltaics from eco-friendly solvents. Water-dispersed organic semiconducting nanoparticles (NPs) satisfy these premises convincingly. However, the necessity of surfactants, which are inevitable for stabilizing NPs, is a major obstacle towards realizing competitive power conversion efficiencies for water-processed devices. Here, we report on a concept for minimizing the adverse impact of surfactants on solar cell performance. A poloxamer facilitates the purification of organic semiconducting NPs through stripping excess surfactants from aqueous dispersion. The use of surfactant-stripped NPs based on poly(3-hexylthiophene) / non-fullerene acceptor leads to a device efficiency and stability comparable to the one from devices processed by halogenated solvents. A record efficiency of 7.5% is achieved for NP devices based on a low-band gap polymer system. This elegant approach opens an avenue that future organic photovoltaics processing may be indeed based on non-toxic water-based nanoparticle inks.


FAU Authors / FAU Editors

Brabec, Christoph Prof. Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Classen, Andrej
Institute Materials for Electronics and Energy Technology (i-MEET)
Fink, Rainer Prof. Dr.
Professur für Physikalische Chemie
Gruber, Wolfgang Dr.
Professur für Nanomaterialcharakterisierung (Streumethoden)
Heumüller, Thomas Dr.-Ing.
Institute Materials for Electronics and Energy Technology (i-MEET)
Li, Ning Dr.-Ing.
Institute Materials for Electronics and Energy Technology (i-MEET)
Schuldes, Isabel
Lehrstuhl für Kristallographie und Strukturphysik
Späth, Andreas Dr.
Lehrstuhl für Physikalische Chemie II
Tang, Xiaofeng
Institute Materials for Electronics and Energy Technology (i-MEET)
Unruh, Tobias Prof. Dr.
Professur für Nanomaterialcharakterisierung (Streumethoden)
Xie, Chen
Institute Materials for Electronics and Energy Technology (i-MEET)


Additional Organisation
Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)


External institutions with authors

Imperial College London / The Imperial College of Science, Technology and Medicine


Research Fields

Neue Materialien und Prozesse
Research focus area of a faculty: Technische Fakultät


How to cite

APA:
Xie, C., Heumüller, T., Gruber, W., Tang, X., Classen, A., Schuldes, I.,... Brabec, C. (2018). Overcoming efficiency and stability limits in water-processing nanoparticular organic photovoltaics by minimizing microstructure defects. Nature Communications, 8(13). https://dx.doi.org/10.1038/s41467-018-07807-5

MLA:
Xie, Chen, et al. "Overcoming efficiency and stability limits in water-processing nanoparticular organic photovoltaics by minimizing microstructure defects." Nature Communications 8.13 (2018).

BibTeX: 

Last updated on 2019-28-05 at 08:37