کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
78892 | 49344 | 2012 | 7 صفحه PDF | دانلود رایگان |
Electrochemical self-organization principles were applied for nanofabrication of Au–Pt core–shell nanoemitters on pre-structured porous SiO2/Si interfaces. The silicon templates were fabricated by oscillatory photocurrent cycles in fluoride containing solutions, permitting subsequent local electrodeposition of rectifying metal heterocontacts into the pores. Enhanced light absorption of this Au–Pt/SiO2/Si nanoarchitecture is deduced from Mie scattering analysis and Finite Difference Time Domain simulations in dependence on the Pt-shell thickness. Test operation as photoelectrochemical cells in I−/I3− redox electrolytes shows conversion efficiencies of 11.6% improving thus the performance of the cells without plasmonic enhancement. It is thereby proven that self-organized electrochemical conditioning on the nanoscale can be successfully applied for preparation of advanced photovoltaic systems, opening thereby new avenues for low-cost production also of solid-state devices.
► A low-cost plasmonic silicon solar cell design is presented.
► Core–shell Schottky junctions were prepared by electrochemical methods.
► Careful optical analysis is provided.
► The cell was successfully tested as photoelectrochemical device.
Journal: Solar Energy Materials and Solar Cells - Volume 107, December 2012, Pages 56–62