Figure 2
From: Substrate-induced interfacial plasmonics for photovoltaic conversion
Fabrication and characterizations of PVDs.
(a) Schematic illustration of the device structure. (b) AFM image of the rutile TiO2 (001) surface showing a root mean square (RMS) roughness of 0.81 Å. The inset shows the chemical structure of Z907. (c) HRTEM image of Ag/Au alloy nanoparticles. The upper inset is a SEM image of a Ag/Au NP film, obtained by annealing an 8-nm-thick Ag/Au alloy film (Ag:Au = 1:1). The lower inset is the elementary composition analysis along the white dashed line, which was calculated from EDX spectroscopy. (d) Absorption spectra of an Ag/Au (1:1) NP film on PMMA-supported graphene (black line) and a Z907 dye layer assembled on a TiO2 substrate (blue line). (e) Time-dependent absorption spectra of an Ag/Au (1:1) NP film on a quartz substrate, upon exposure to air at room temperature. (f) Raman spectra of Z907 on TiO2, Z907 on SLG (Z907/SLG) and Z907 on SLG/(Ag/Au) NPs (Z907/SLG/NPs).
