The substitution of the platinum counter electrode in a plasmonic photoelectrochemical system with near-infrared absorption for solar water splitting

RSC Advances ◽  
2016 ◽  
Vol 6 (105) ◽  
pp. 103160-103168 ◽  
Author(s):  
Chih-Jung Chen ◽  
Chih Kai Chen ◽  
Tzu-Hsiang Lu ◽  
Shu-Fen Hu ◽  
Ru-Shi Liu
Keyword(s):  
Water Splitting ◽  
Infrared Absorption ◽  
Counter Electrode ◽  
Near Infrared ◽  
Solar Spectrum ◽  
Pt Electrode ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Wide Range

A plasmonic photoelectrochemical system was constructed by alternating the conventional Pt electrode for utilizing a wide range of the solar spectrum.

scholarly journals Design Considerations of Efficient Photo-Electrosynthetic Cells and its Realization Using Buried Junction Si Thin Film Multi Absorber Cells

2020 ◽  
Vol 234 (4) ◽  
pp. 549-604
Author(s):  
Wolfram Jaegermann ◽  
Bernhard Kaiser ◽  
Friedhelm Finger ◽  
Vladimir Smirnov ◽  
Rolf Schäfer
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Water Splitting ◽  
Ni Catalyst ◽  
Redox Potentials ◽  
Interface Engineering ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Design Considerations ◽  
Wide Range

AbstractAs is obvious from previous work on semiconductor photoelectrochemistry, single junction semiconductors do not provide either the required maximum photovoltage or a high photocurrent for solar water splitting, which is required for efficient stand-alone devices. From these experiences we conclude, that multi-junction devices must be developed for bias-free water splitting. In this article we present our design considerations needed for the development of efficient photo-electro-synthetic cells, which have guided us during the DFG priority program 1613. At first, we discuss the fundamental requirements, which must be fulfilled to lead to effective solar water splitting devices. Buried junction and photoelectrochemical arrangements are compared. It will become clear, that the photovoltaic (PV) and electrochemical (EC) components can be optimized separately, but that maximized conversion efficiencies need photovoltages produced in the photovoltaic part of the device, which are adapted to the electrochemical performance of the electrolyzer components without energetic losses in their coupling across the involved interfaces. Therefore, in part 2 we will present the needs to develop appropriate interface engineering layers for proper chemical and electronic surface passivation. In addition, highly efficient electrocatalysts, either for the hydrogen or oxygen evolution reaction (HER, OER), must be adjusted in their energetic coupling to the semiconductor band edges and to the redox potentials in the electrolyte with minimized losses in the chemical potentials. The third part of our paper describes at first the demands and achievements on developing multijunction thin-film silicon solar cells. With different arrangements of silicon stacks a wide range of photovoltages and photocurrents can be provided. These solar cells are applied as photocathodes in integrated directly coupled PV-EC devices. For this purpose thin Pt and Ni catalyst layers are used on top of the solar cells for the HER and a wire connected RuO2 counter electrode is used for the OER. Electrochemical stability has been successfully tested for up to 10,000 s in 0.1 M KOH. Furthermore, we will illustrate our experimental results on interface engineering strategies using TiO2 as buffer layer and Pt nanostructures as HER catalyst. Based on the obtained results the observed improvements, but also the still given limitations, can be related to clearly identified non-idealities in surface engineering either related to recombination losses at the semiconductor surface reducing photocurrents or due to not properly-aligned energy states leading to potential losses across the interfaces.

Combinatorial Fabrication and High-Throughput Characterization of Thin Film Metal Oxide Libraries for Solar water Splitting

2018 ◽  
Author(s):  
Alfred Ludwig ◽  
Mona Nowak ◽  
Swati Kumari ◽  
Helge S. Stein ◽  
Ramona Gutkowski ◽  
...  
Keyword(s):  
Thin Film ◽  
Metal Oxide ◽  
Water Splitting ◽  
High Throughput ◽  
Solar Water ◽  
Solar Water Splitting

Carrier Engineering of Zr-mediated Ta3N5 Film as Efficient Photoanode for Solar Water Splitting

2021 ◽  
Author(s):  
Xin Zou ◽  
Xueyang Han ◽  
Chengxiong Wang ◽  
Yunkun Zhao ◽  
Chun Du ◽  
...  
Keyword(s):  
Band Structure ◽  
Visible Light ◽  
Water Splitting ◽  
Light Absorption ◽  
Photoelectrochemical Water Splitting ◽  
Promising Candidate ◽  
Visible Light Absorption ◽  
Solar Water ◽  
Solar Water Splitting

Ta3N5 is regarded as a promising candidate material with adequate visible light absorption and band structure for photoelectrochemical water splitting. However, the performance of Ta3N5 is severely limited by the...

scholarly journals Kesterite Cu2ZnSnS4 thin-film solar water-splitting photovoltaics for solar seawater desalination

2021 ◽  
Vol 2 (6) ◽  
pp. 100468
Author(s):  
Lintao Li ◽  
Chenyang Wang ◽  
Kuang Feng ◽  
Dingwang Huang ◽  
Kang Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Water Splitting ◽  
Seawater Desalination ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Cu2znsns4 Thin Film

3.17% efficient Cu2ZnSnS4–BiVO4 integrated tandem cell for standalone overall solar water splitting

2021 ◽  
Author(s):  
Dingwang Huang ◽  
Kang Wang ◽  
Lintao Li ◽  
Kuang Feng ◽  
Na An ◽  
...  
Keyword(s):  
Water Splitting ◽  
Large Scale ◽  
Tandem Cell ◽  
Solar Water ◽  
Solar Water Splitting ◽  
First Time

3.17% efficient Cu2ZnSnS4–BiVO4 integrated tandem cell and a large scale 5 × 5 cm integrated CZTS–BiVO4 tandem device for standalone overall solar water splitting was assembled for the first time.

scholarly journals Plasmonic Metal Nanostructures as Efficient Light Absorbers for Solar Water Splitting

2021 ◽  
pp. 2100092
Author(s):  
Yawen Wang ◽  
Junchang Zhang ◽  
Wenkai Liang ◽  
Wei Qin ◽  
Yinghui Sun ◽  
...  
Keyword(s):  
Water Splitting ◽  
Metal Nanostructures ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Light Absorbers
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