Department Perovskite Tandem Solar Cells
Research Topics

A heterojunction silicon cell provides the base for the tandem cell. A very thin layer of transparent tin dioxide was deposited on this bottom cell, followed by 500 nm of perovskite as well as 200 nm of spiro-OMeTAD hole-conductor material. Thin MoO3 serves as a protective layer between this hole conductor and the transparent top electrode of ITO. Image: S. Albrecht / HZB
New Materials and Device Designs
- Band gap tuning
- Enhancement of Voc (interface design)
- Device design
- Light trapping on front side (textured surface)
Long-term Stability
- Investigate temporal stability under different testing conditions
Optimized Transparent Electrodes
- Soft sputter-deposition
- Suitable buffer layers
Optimization of the Silicon Bottom-Cell
- Optimize recombination contact
- Effective light trapping on back side
Improved Optical Design by Modern Simulations
- Optical 3D simulations