Tin(IV) oxide 1

1. 

In perovskite solar cells, the perovskite layer generates photogenerated charge, where electrons need to be transferred quickly to the electrode to form an electric current. Tin dioxide (IV), as the material of the electron transport layer, has good electronic conductivity and can effectively promote the rapid transmission of photogenerated electrons to the electrode, thereby improving the efficiency of the battery.

2. 

The electron transport layer in perovskite solar cells is not only responsible for the rapid transmission of electrons, but also responsible for the effective collection of electrons to the electrode. The material of tin dioxide (IV) as the electron transport layer has the appropriate band structure and interface characteristics, which can effectively promote the collection of electrons, avoid the recombination and loss of charge, and thus improve the efficiency of the battery.

3. 

In addition to electron transport and collection functions, tin dioxide (IV) as an electron transport layer material also needs to have good optical transparency. This is because perovskite solar cells require light to pass through the electron transport layer into the perovskite layer for light absorption, so the electron transport layer needs to be transparent enough to improve the utilization of light and the photoelectric conversion efficiency of the cell.