Improvement of electron/hole injection balance based on nanowire/nanocube hybrid perovskite

Abstract

The methyl ammonium lead iodide perovskite nanowire/nanocube can be fabricated with an improved two-step spin-coating process by adjusting the amount of dimethyl formamide. The hybrid structure enhanced the efficiency of electron/hole separation and charge transfer at the electron transport layer/perovskite/hole transport layer interfaces, benefiting from the improvement of electron/hole injection balance. The dynamic time parameters based on the half-baked cells, only containing electron transport layer or the hole transport layer, could assert rationality of the hypothesis by photoluminescence decays.