Abstract
Inverted all polymer solar cells based on a blend of a perylene diimide based polymer acceptor and a dithienosilole based polymer donor were fabricated from small area devices to roll-to-roll (R2R) coated and printed large area modules. The device performance was successfully optimized by using solvent additive to tune the phase separation. By adding 2% chloronaphthalene as solvent additive for small area (0.25 cm2) devices, a power conversion efficiency (PCE) up to 0.63% was achieved for inverted geometry, higher than that (0.39%) of conventional geometry. This polymer blend showed excellent solution processibility and R2R coated and printed large area (4.2 cm 2) solar cells exhibited a PCE of 0.20%. © 2013 Elsevier B.V.
Original language | English |
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Journal | Solar Energy Materials & Solar Cells |
Volume | 112 |
Pages (from-to) | 157-162 |
ISSN | 0927-0248 |
DOIs | |
Publication status | Published - 2013 |
Keywords
- Conversion efficiency
- Geometry
- Phase separation
- Solar cells
- Plastic coatings
- All-polymer solar cells
- Inverted geometry
- Roll-to-roll process