Suppression of bimolecular recombination by UV-sensitive electron transport layers in organic solar cells
- Suppression of bimolecular recombination by UV-sensitive electron transport layers in organic solar cells
- 고두현; John. R. Tumbleston; 옥명렬; 천홍구; Rene Lopez; Edward T. Samulski
- Issue Date
- Journal of applied physics
- VOL 108, NO 8, 083101-1-083101-6
- Incorporating UV-sensitive electron transport layers ETLs into organic bulk heterojunction BHJ
photovoltaic devices dramatically impacts short-circuit current Jsc and fill factor characteristics.
Resistivity changes induced by UV illumination in the ETL of inverted BHJ devices suppress bimolecular recombination producing up to a two orders of magnitude change in Jsc. Electro-optical
modeling and light intensity experiments effectively demonstrate that bimolecular recombination, in the form of diode current losses, controls the extracted photocurrent and is directly dependent on the ETL resistivity.
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