Li@C60 endohedral fullerene as a supraatomic dopant for C60 electron-transporting layers promoting the efficiency of perovskite solar cells.

Hiroshi Ueno Il Jeon Hao-Sheng LinAbhishek ThoteTakafumi Nakagawa Hiroshi Okada Seiichiro Izawa Masahiro Hiramoto Hirofumi Daiguji Shigeo Maruyama Yutaka Matsuo

Published in: Chemical communications (Cambridge, England) (2019)

C60:Li@C60 hybrid n-type semiconducting films were first fabricated. The Fermi level of 1% Li@C60-added C60 films was determined to be -4.52 eV, which was 0.12 eV higher than that of pristine C60 films. A fraction of Li@C60 is distributed uniformly within the C60 film. Its application in PSCs was demonstrated, in which the addition of Li@C60 into a C60 film improved the device performance.

Keyphrases

ion batteries
room temperature
perovskite solar cells
solid state
gold nanoparticles