Fig. 1
From: Electronic components embedded in a single graphene nanoribbon
Fabrication and characterization of metal-semiconductor heterojunctions and heterostructures. a Chemical structure of 10,10’-dibromo-9,9’-bianthryl (DBBA) and dibromoperylene (DBP), and of a 5/7-GNR heterojunction. The red arrows indicate a type I (top) and type II (bottom) junction. b Overview STM image of 5/7-GNR heterostructures on Au(111). V = 0.1 V, I = 20 pA, scale bar is 10 nm. c AFM image of a heterostructure. d Small-scale STM (top) and AFM (bottom) images of junction type I. z-offset for AFM image—40 pm w.r.t. a STM set-point of V = 0.1 V, I = 20 pA. e Small-scale STM (top) and AFM (bottom) images of junction type II. z-offset—40 pm w.r.t. a STM set-point of V = 0.1 V, I = 100 pA. Scale bars in c–e are 2 nm
