New solar cell ions

Do solar cells increase ionic losses with ageing?

They demonstrate the generality of the observed increase in ionic losses with ageing by testing solar cells based on perovskite layers with different compositions as well as various organic and inorganic contact materials (Fig. 1c ).

Do mobile ions affect perovskite solar cells?

Recently, we have been exploring the behavior and impact of mobile ions on perovskite solar cells. [20, 21, 23] Vacancies in the perovskite crystal lattice and excess halide at interstitial sites are typically seen as the main types of mobile ions.

Do mobile ions affect tandem solar cell performance?

Overall, this study provides evidence that mobile ions and hysteresis still remain critical factors to explore in perovskite-based tandem solar cells. Importantly, we have introduced an easy-to-implement technique to analyze the impact of mobile ions on tandem cell performance.

Does D18 block ion diffusion in organic solar cells?

D18, a widely adopted p-type donor material in organic solar cells, can form a dense polymeric membrane on the perovskite surface via hot casting, effectively blocking ion diffusion between the perovskite layer and the Spiro-OMeTAD layer.

Does mobile ion migration affect solar cell efficiency?

By decoupling ion migration from other effects, research now shows that electric field screening induced by mobile ions is a dominant contributor to efficiency loss during solar cell ageing.

How are ionic losses measured in tandem solar cells?

To quantify the ionic losses in Si/perovskite and all-perovskite tandem solar cells we first used the fast hysteresis (FH) technique. (Figure 1c-h) shows the scan-rate dependent J–V characteristics and PCE parameters like open-circuit voltage (VOC), short-circuit current density (JSC), and fill factor (FF).