Fig. 4From: Optoelectronic Properties of MAPbI3 Perovskite/Titanium Dioxide Heterostructures on Porous Silicon Substrates for Cyan Sensor ApplicationsI-V characteristics of graphene/MAPbI3/TiO2/Si heterostructure in darkness. Inset schematically depicts the graphene/MAPbI3/TiO2/Si heterostructure diodeBack to article page