For some, pervoskite research remains the holy grail of the solar industry, inciting deep intrigue with the promise of heightened efficiencies by adding just a thin extra layer to a solar cell. However, as with everything that seems to good to be true, there is one major hurdle, and in the case of perovskites it is stability and durability.
Researchers at Stanford and Oxford believe that they might have solved this problem, and created an even better product, by removing the silicon cell altogether. The scientists, reported in the most recent edition of Science, have created a solar cell that replaces the silicon cell with one made of perovskite crystal instead. So, instead of adding a thin layer of perovskites on top of a silicon cell to increase efficiency, which is where most of the prominent research is currently focused, this method uses purely perovskite crystal to construct the cell.
The perovskite crystal can be made with tin or with any other abundant elements, and is printed on glass, but can even be done on plastic. Two cells are then stacked next to each other, working in tandem to generate electricity from solar energy.
Perovskite cells can be processed in a laboratory from common materials like lead, tin and bromine, then printed on glass at room temperature, explained postpoctoral scholar at Stanford and co-lead author of the report Tom Leijtens.
The same efficiency for a lower cost