Abstract

Perovskite solar cell is the highest cell efficiency produced until now to produce energy. Therefore, the team concentrated its efforts on solving Perovskite problems, as if it is solved, it would solve the problem of energy as it is one of the most important challenges.

Solving the stability of perovskite by using Tetrabutylammonium iodide (TBAI) instead of methyl ammonium iodide (MAPbl3) was very successful, because Tetrabutylammonium iodide has large CH2 group than MAPbl3, so it absorbs less water, making the cell more stable.

Also, by made a combination between its two ways of fabrication, and getting one (vapor-assisted deposition) with less costs, and highest efficiency.

In addition, replacing the Spiro MeOtad by copper iodide gives a great results, making the copper iodide favoured to be used in fabricating the perovskite cell.

The addressed hypotheses lead to further improvement in perovskite cell’s efficiency from 7.85 to 11.52, improved crystallinity of the prepared perovskite films, better light stability, less hysteresis, and lower cost.  So, we achieved the design requirements successfully which are low cost, high efficiency, stability and long life time, and availability of materials.