1:30 PM - 3:30 PM
[20p-PB4-24] Perovskite solar cells fabricated by low-temperature method with a compact layer
composed of highly crystalline fine nano-particles of TiO2
Keywords:Perovskite solar cell, Low temperature coating
Perovskite solar cells, which consist of methylammonium lead iodide (CH3NH3PbI3), receive much attention because of their fairly high energy conversion efficiency of greater than 20%, even when preparing the printing process in ambient conditions. There are two structures of perovskite solar cells: the normal structure and the inverted structure.
In the normal structure, a high-density n-type semiconductor layer (which is called a compact layer) on a transparent conductive substrate is needed, and it is usually prepared using TiO2 and a high-temperature sintering process from a precursor alkoxide or other. They are usually unstable under moisture, and therefore, it is difficult to control their concentration.
In this presentation, we show the use a highly crystalline TiO2 particle with a size of 7 nm for the compact layer formation. The size of 7 nm is considered to be small enough to form the compact layer. Because of the highly crystalline nature of the layer, it is easier to control the concentration and the coating condition, and hence, we expect that it will be used for highly efficient low-temperature coating perovskite solar cells.
In the normal structure, a high-density n-type semiconductor layer (which is called a compact layer) on a transparent conductive substrate is needed, and it is usually prepared using TiO2 and a high-temperature sintering process from a precursor alkoxide or other. They are usually unstable under moisture, and therefore, it is difficult to control their concentration.
In this presentation, we show the use a highly crystalline TiO2 particle with a size of 7 nm for the compact layer formation. The size of 7 nm is considered to be small enough to form the compact layer. Because of the highly crystalline nature of the layer, it is easier to control the concentration and the coating condition, and hence, we expect that it will be used for highly efficient low-temperature coating perovskite solar cells.