A Low-Cost NiO Hole Transfer Layer for Ohmic Back Contact to Cu2 O for Photoelectrochemical Water Splitting

Small ◽  
2017 ◽  
Vol 13 (39) ◽  
pp. 1702007 ◽  
Author(s):  
Yijia Wei ◽  
Xiaoxia Chang ◽  
Tuo Wang ◽  
Chengcheng Li ◽  
Jinlong Gong
2017 ◽  
Vol 1 (8) ◽  
pp. 1830-1846 ◽  
Author(s):  
Martin Rohloff ◽  
Björn Anke ◽  
Siyuan Zhang ◽  
Ulrich Gernert ◽  
Christina Scheu ◽  
...  

Facile sol–gel synthesis of Mo:BiVO4 thin films with optimized morphology results in reduced surface recombination and enhanced hole transfer efficiency.


Nanoscale ◽  
2018 ◽  
Vol 10 (38) ◽  
pp. 18378-18386 ◽  
Author(s):  
Linsen Li ◽  
Jinhua Li ◽  
Jing Bai ◽  
Qingyi Zeng ◽  
Ligang Xia ◽  
...  

The performance of BiVO4 was highly enhanced by serial hole transfer layers of Fe2O3 and NiOOH/FeOOH.


Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 525 ◽  
Author(s):  
Carmelo Lo Vecchio ◽  
Stefano Trocino ◽  
Sabrina Campagna Zignani ◽  
Vincenzo Baglio ◽  
Alessandra Carbone ◽  
...  

Tandem photoelectrochemical cells (PECs), made up of a solid electrolyte membrane between two low-cost photoelectrodes, were investigated to produce “green” hydrogen by exploiting renewable solar energy. The assembly of the PEC consisted of an anionic solid polymer electrolyte membrane (gas separator) clamped between an n-type Fe2O3 photoanode and a p-type CuO photocathode. The semiconductors were deposited on fluorine-doped tin oxide (FTO) transparent substrates and the cell was investigated with the hematite surface directly exposed to a solar simulator. Ionomer dispersions obtained from the dissolution of commercial polymers in the appropriate solvents were employed as an ionic interface with the photoelectrodes. Thus, the overall photoelectrochemical water splitting occurred in two membrane-separated compartments, i.e., the oxygen evolution reaction (OER) at the anode and the hydrogen evolution reaction (HER) at the cathode. A cost-effective NiFeOx co-catalyst was deposited on the hematite photoanode surface and investigated as a surface catalytic enhancer in order to improve the OER kinetics, this reaction being the rate-determining step of the entire process. The co-catalyst was compared with other well-known OER electrocatalysts such as La0.6Sr0.4Fe0.8CoO3 (LSFCO) perovskite and IrRuOx. The Ni-Fe oxide was the most promising co-catalyst for the oxygen evolution in the anionic environment in terms of an enhanced PEC photocurrent and efficiency. The materials were physico-chemically characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM).


2018 ◽  
Vol 10 (23) ◽  
pp. 19573-19579 ◽  
Author(s):  
Christopher P. Muzzillo ◽  
W. Ellis Klein ◽  
Zhen Li ◽  
Alexander Daniel DeAngelis ◽  
Kimberly Horsley ◽  
...  

2020 ◽  
Vol 208 ◽  
pp. 110424 ◽  
Author(s):  
Piotr J. Barczuk ◽  
Krzysztof R. Noworyta ◽  
Miroslaw Dolata ◽  
Katarzyna Jakubow-Piotrowska ◽  
Jan Augustynski

2018 ◽  
Vol 6 (31) ◽  
pp. 15265-15273 ◽  
Author(s):  
Ela Nurlaela ◽  
Yutaka Sasaki ◽  
Mamiko Nakabayashi ◽  
Naoya Shibata ◽  
Taro Yamada ◽  
...  

A remarkable onset potential shift has been demonstrated on Ta3N5 modified with a Mg:GaN layer. The Mg-doped GaN band positions facilitate more efficient electron/hole transfer to/from Ta3N5, inducing a negative onset potential shift to 0 vs. RHE.


RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49429-49438 ◽  
Author(s):  
D. Hidalgo ◽  
S. Bocchini ◽  
M. Fontana ◽  
G. Saracco ◽  
S. Hernández

Green and low-cost synthesis procedure for preparation of PANI/TiO2 mesoporous nanocomposite films with enhanced photocatalytic performance, thanks to a synergic reaction mechanism between PANI and TiO2 under UV light irradiation.


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