Berlin 2018 – scientific programme

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O: Fachverband Oberflächenphysik

O 77: Poster: Plasmonics and Nanooptics

O 77.18: Poster

Wednesday, March 14, 2018, 18:15–20:30, Poster A

Three-dimensional plasmonic nanostructure design for boosting photoelectrochemical Activity — •rui xu, liaoyong wen, zhijie wang, huaping zhao, shipu xu, yan mi, yang xu, max sommerfeld, yaoguo fang, and yong lei — Am Ehrenberg 2, 98693 ilmenau

An innovative approach is presented to construct three-dimensional pillar/truncated-pyramid (PTP) plasmonic nanostructure arrays. A CdS film on the Au PTP demonstrates the advantage of PTP plasmonic structures for light trapping, leading to about 3 and 2 times enhancement photocurrent density at -0.4 V vs. RHE as compared with a planar CdS/Au and pillar electrodes, respectively. A wide spectral range of enhancement was achieved, originating from photonic and plasmonic modes. Studies on the aspect ratio of P/TP and different thickness of CdS were carried out. The nanostructures are highly robust and can easily be utilized in other semiconductor thin film photovoltaic and photoelectrochemical cells.