Crystallites of α-Sexithiophene in Bilayer Small Molecule Organic Solar Cells Double Efficiency
Epifluorescence micrographs of α-6T/C60 solar cells with electron donor layer deposited at 300 K, 320 K, 330 K, 340 K, 360 K, and 390 K, from (a) to (f), respectively. The scale bars are 20 μm. As the encapsulant layer absorbs UV light, 460 nm–495 nm excitation and 515 nm–555 nm emission filters were employed.
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