Journal
ADVANCED MATERIALS
Volume 33, Issue 39, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202103017
Keywords
flexible electrodes; flexible organic solar cells; large-area devices; solar modules
Categories
Funding
- National Natural Science Foundation of China [51973074, 51773072, 61804060]
- China Postdoctoral Science Foundation [2019M662614, 2020M682404]
- Hubei Province Postdoctoral Innovation Research Foundation
Ask authors/readers for more resources
This study presents efficient large-area flexible single cells and modules based on flexible electrodes, as well as a flexible power source for charging. The electrodes exhibit low surface roughness and excellent optoelectronic and mechanical properties.
Development of large-area flexible organic solar cells (OSCs) is highly desirable for their practical applications. However, the efficiency of the large-area flexible OSCs severely lags behind small-area devices. Here, efficient large-area flexible single cells with power conversion efficiency (PCE) of 13.1% and 12.6% for areas of 6 and 10 cm(2), and flexible modules with a PCE of 13.2% (54 cm(2)) based on poly(ethylene terephthalate)/Ag grid/silver nanowires (AgNWs):zinc-chelated polyethylenimine (PEI-Zn) composite electrodes are reported. The solution-processed flexible transparent electrode of AgNWs:PEI-Zn shows low surface roughness and good optoelectronic and mechanical properties. PEI-Zn is conductive and optically transparent. It can adhere to and wrap the AgNWs under electrostatic interaction between the negatively charged surface (AgNWs) and positively charged protonated amine groups (in PEI-Zn). It wraps the AgNWs networks and fills the void space to achieve a smooth surface. The flexible electrode is validated in both flexible OSCs and flexible quantum-dots light-emitting diodes (QLEDs). Small-area flexible OSCs show a PCE of 16.1%, and flexible QLEDs show an external quantum efficiency of 13.3%. In the end, a flexible module is demonstrated to charge a mobile phone as a flexible power source (shown in Video S1, Supporting Information).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available