Dou, J.; Zhang, Y.; Wang, Q.; Abate, A.; Li, Y.; Wei, Mingdeng: Highly efficient Zn2SnO4 perovskite solar cells through band alignment engineering. Chemical Communications 55 (2019), p. 14673-14676
10.1039/C9CC07398A

Abstract:
An active absorption layer with a narrow band gap has been achieved through adjusting the halide ratio in a halide perovskite, and it had better energy alignment with the Zn2SnO4 electron transport layer. An efficiency of 19.37% can be obtained, and this has also been improved to 20.26% through the incorporation of cesium, giving a new triple cation perovskite.