
December 31, 2012 12:35 PSP Book - 9in x 6in 05-Hsin-Fei-Meng-c05
214 Polymer Solar Cells
Figure 5.24 (a) Device structure and TEM cross-sectional images of
polymer tandem solar cells (lower image: scale bar, 100 nm; upper image:
scale bar, 20 nm). (b) Absorption spectra of a PCPDTBT:PCBM film, a
P3HT:PC
70
BM film, and a bilayer of the two in a tandem device structure.
(c) J –V characteristics of single cells incorporating PCPDTBT:PCBM
and P3HT:PC
70
BM composites and of a tandem cell incorporating both
under AM1.5G illumination from a calibrated solar simulator [irradiation
intensity: 100 mW/cm
2
(ca. 1 sun)] [67] (From Kim, J. Y., K. Lee, N. E. Coates,
D. ...