Journal
ADVANCED MATERIALS
Volume 34, Issue 31, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202203796
Keywords
average visible transmittance; organic photovoltaics; recombination studies; semitransparent solar cells
Categories
Funding
- US Office of Naval Research [N00014-21-1-2181]
- Nazarbayev University [11022021FD2915, 11022021CRP1505]
- Link Foundation
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
- National Research Foundation of Korea [PAL-2022] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
This study investigates the charge generation-recombination dynamics in three narrow-bandgap near-IR absorbing nonfullerene-based organic photovoltaic systems. The results show that diluting the polymer donor with visible-range absorption leads to highly transparent active layers, and the optimized device configuration achieves high photoconversion efficiencies.
The charge generation-recombination dynamics in three narrow-bandgap near-IR absorbing nonfullerene (NFA) based organic photovoltaic (OPV) systems with varied donor concentrations of 40%, 30%, and 20% are investigated. The dilution of the polymer donor with visible-range absorption leads to highly transparent active layers with blend average visible transmittance (AVT) values of 64%, 70%, and 77%, respectively. Opaque devices in the optimized highly reproducible device configuration comprising these transparent active layers lead to photoconversion efficiencies (PCEs) of 7.0%, 6.5%, and 4.1%. The investigation of these structures yields quantitative insights into changes in the charge generation, non-geminate charge recombination, and extraction dynamics upon dilution of the donor. Lastly, this study gives an outlook for employing the highly transparent active layers in semitransparent organic photovoltaics (ST-OPVs).
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