Assertion: solar cell's efficiency | /r/HasProperty | obtained
Facets:
value: by exposing the cell
type: MANNER
value: by using optics
type: MANNER
Source sentences:
text: Higher efficiencies (around 30%) can be obtained by using optics to concentrate the incident light.
text: When 1-ethyl-3-methylimidazolium dicyanamide [EMIM] [DCA] with a viscosity of only 21 mPa s  was combined with 1-propyl-3-methylimidayolium iodide (PMII, volume ratio 1:1), an efficiency of 7.4% was observed and, after prolonged illumination, some degradation was also found.
text: Simple production technology in comparison to the efficiency being obtained;
text: Efficiencies are obtained by exposing the cell to a constant, standard level of light while maintaining a constant cell temperature, and measuring the current and voltage that are produced for different load resistances.
text: The highest efficiencies for the devices based on ISB-2 were observed due to the larger red shifts of 48 nm for ISB-2, indicating the more powerful electron-donating ability due to the increased linker conjugation.