TY  - JOUR
AU  - Bittkau, K.
AU  - Kirchartz, T.
AU  - Rau, U.
TI  - Optical design of spectrally selective interlayers for perovskite/silicon heterojunction tandem solar cells
JO  - Optics express
VL  - 26
IS  - 18
SN  - 1094-4087
CY  - Washington, DC
PB  - Soc.
M1  - FZJ-2018-04529
SP  - A750-A760
PY  - 2018
AB  - Monolithic perovskite/c-Si tandem solar cells have the potential to exceed the Shockley-Queisser limit for single junction solar cells. However, reflection losses at internal interfaces play a crucial role for the overall efficiency of the tandem devices. Significant reflection losses are caused by the charge selective contacts which have a significantly lower refractive index compared to the absorber materials. Here, we present an approach to overcome a significant part of these reflection losses by introducing a multilayer stack between the top and bottom cell which shows spectrally selective transmission/reflection behavior. The layer stack is designed and optimized by optical simulations using transfer matrix method and a genetic algorithm. The incident sun light is split into a direct part and an isotropic diffuse part. The tandem solar cell with interlayer shows an absolute improvement of short-circuit current density of 0.82 mA/cm2.
LB  - PUB:(DE-HGF)16
C6  - pmid:30184834
UR  - <Go to ISI:>//WOS:000443431400004
DO  - DOI:10.1364/OE.26.00A750
UR  - https://juser.fz-juelich.de/record/850751
ER  -