Joint R&D with industrial partners in early stage of development

HySPRINT Logo printed with copper


The Helmholtz Innovation Lab HySPRINT at HZB is a platform for collaborations with industrial partners. HySPRINT deals with (opto)electronic materials and devices in an early stage of the technological development.


Alkali salts as interface modifiers in hybrid perovskite solar cells


According to a recent study in the Helmholtz innovation laboratory HySPRINT at Helmholtz-Zentrum Berlin, a team of scientists has found how the performance of perovskite solar cells, which can be used in tandem solar cells, can be further increased. Previous studies have shown that the current-voltage hysteresis is due to ionic defects at metal oxide/perovskite interfaces. To solve the problem, HZB scientists modified the interface and added interface modifiers. "By depositing potassium nitrate and similar alkali salts on a tin oxide transport layer, before coating the perovskite absorber film on top, we enhance the operational device stability and yield power conversion efficiencies up to 19%," says Janardan Dagar, first author of the study. This improvement in operational stability is a major step towards the commercialization of perovskite solar cells.

Read the full paper “Alkali Salts as Interface Modifiers in n‐i‐p Hybrid Perovskite Solar Cells” published in Advanced Science news

Travel blog of a tandem solar cell


...I am a solar cell born in the PVcomB and Helmholtz Innovation Lab HySPRINT, specifically, in the perovskite lab. As you can see from my photo, I live in a glass cover. But I am not bashful – actually, I like to be uncovered. The sun is my main desire...

Check our new post in the HZB blog about the perovskite/silicon tandem solar cell travelling around the world here> 

Follow the traveler with #TandemOnTour and @AlbrechtLab on Twitter


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