Figure 1
Illustration of the experimental setup. (a) schematic of the experimental setup, where a UV spectrometer is mounted on the cold wall CVD system so as to monitor the composition of the gases in the region directly above the copper catalyst layer; (b,c) photographs of the experimental setup; (b) fiber optic cables transmit light (blue dashed line) to and from the detector and UV lamp through the reaction chamber; the cables are attached to collimating lenses, which are firmly and precisely mounted onto the (c) front and back viewports.
