A new recombination layer for use in tandem polymer solar cells has been developed by scientists in the US. Tandem polymer solar cells are two single-junction solar cells connected in series by a conducting layer (the recombination layer). The new layer – made of the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) modified at one interface with ethoxylated polyethylenimine – results in the highest fill factor value (0.72) ever reported for a tandem polymer solar cell. The fill factor is the ratio of maximum obtainable power to the product of the open-circuit voltage and short-circuit current.
Read the full details of this exciting Energy & Environmental Science article today:
High performance polymeric charge recombination layer for organic tandem solar cells
Yinhua Zhou, Canek Fuentes-Hernandez, Jae Won Shim, Talha Mansur Khan and Bernard Kippelen