Figure 11.

a) Schematic view of molecular test bed with rGO thin film as transparent top contact. b) Schematic cross section of the molecular junction and molecular structure of DHA 1 and VHF 2, to illustrate the thermos‐optical switching. c) J–V characteristics of VHF 2 (as prepared) and DHA 1 (70 °C for 0.5 h) isomers self‐assembled in the molecular junctions. The data were averaged from at least 24 junctions of the same batch. d) Representative bidirectional conduction switching characteristics induced by alternating heating and UV irradiation. UV irradiation typically does not fully recover the low‐conducting state of VHF 2 and therefore results in a decrease of the on/off ratio (inset). Reproduced with permission.^{[ 89 ]} Copyright 2013, Wiley‐VCH.