Abstract
We demonstrate a cascade architecture for organic solar cells with two planar donor/acceptor (DA) heterojunctions operating in series. In a 3-layered structure, subphthalocyanine (SubPc) acts as an ambipolar interlayer between a tetracene (Tc) donor and a C 60 acceptor. The Tc/SubPc and SubPc/C 60 interfaces are both able to contribute to the photocurrent, which results in a short-circuit current in the 3-layer cascade cell larger than in any of the constituent bi-layer DA combinations. Furthermore, the open-circuit voltage is increased due to reduced recombination losses at the DA interface.
Original language | English (US) |
---|---|
Article number | 143301 |
Journal | Applied Physics Letters |
Volume | 101 |
Issue number | 14 |
DOIs | |
State | Published - Oct 1 2012 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)