https://www.pv-magazine.com/2024/02/02/vitamin-c-treatment-improves-stability-of-inverted-organic-solar-cells/
The group found that the ascorbic acid produces a photostabilizing effect, reporting that antioxidant activity alleviates the degradative processes arising from exposure to oxygen, light and heat. Tests, such as ultraviolet-visible absorption, impedance spectroscopy, light-dependent voltage and current measurements, also revealed that vitamin C reduces the photobleaching of NFA molecules and suppresses the charge recombination, noted the research.
Their analysis showed that, after 96 h of continuous photodegradation under 1 Sun, the encapsulated devices containing the vitamin C interlayer retained 62% of their original value, with the reference devices retaining only 36%.
The results also showed that the stability gains did not come at a cost of efficiency