Efficient hot-electron transfer by a plasmon-induced interfacial charge-transfer transition

Science ◽  
2015 ◽  
Vol 349 (6248) ◽  
pp. 632-635 ◽  
Author(s):  
K. Wu ◽  
J. Chen ◽  
J. R. McBride ◽  
T. Lian
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Hot Electron ◽  
Charge Transfer Transition ◽  
Interfacial Charge Transfer ◽  
Hot Electron Transfer ◽  
Interfacial Charge

scholarly journals Photo-induced direct interfacial charge transfer at TiO2 modified with hexacyanoferrate(iii)

2018 ◽  
Vol 17 (9) ◽  
pp. 1153-1156 ◽  
Author(s):  
Tomomi Tatebe ◽  
Takashi Harada ◽  
Kazuhide Kamiya ◽  
Shuji Nakanishi
Keyword(s):  
Electron Transfer ◽  
Titanium Dioxide ◽  
Charge Transfer ◽  
Transfer Reactions ◽  
Interfacial Charge Transfer ◽  
Electron Transfer Reactions ◽  
Photo Induced Electron Transfer ◽  
Interfacial Charge

Photo-induced electron-transfer reactions occurring at the interface between titanium dioxide modified with hexacyanoferrate(iii) (Fe(iii)-CN-TiO2) were characterized.

Plasmon induced ultrafast injection of hot electrons in Au nanoislands grown on a CdS film

2017 ◽  
Vol 5 (3) ◽  
pp. 618-626 ◽  
Author(s):  
Alka Sharma ◽  
Chhavi Sharma ◽  
Biplab Bhattacharyya ◽  
Kaweri Gambhir ◽  
Mahesh Kumar ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Hot Electrons ◽  
Charge Transfer Transition ◽  
Interfacial Charge Transfer ◽  
Transition Phenomenon ◽  
Charge Dynamics ◽  
Cds Film ◽  
Interfacial Charge

The ultrafast charge dynamics demonstrated in the Au–CdS film supports the plasmon induced interfacial charge transfer transition phenomenon.

Charge Carrier Transfer in Ta3N5 Photoanodes Prepared by Different Methods for Solar Water Splitting

2016 ◽  
Vol 69 (6) ◽  
pp. 631 ◽  
Author(s):  
Mingxue Li ◽  
Wenjun Luo ◽  
Liheng Yang ◽  
Xin Zhao ◽  
Zhigang Zou
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Water Splitting ◽  
Charge Separation ◽  
Preparation Method ◽  
Separation Efficiency ◽  
Interfacial Charge Transfer ◽  
Splitting Property ◽  
Charge Separation Efficiency ◽  
Interfacial Charge

The preparation method of a photoanode can affect its water splitting property. Here, as examples, we prepared Ta3N5 photoanodes by an electrophoresis deposition (EPD) method and an oxidation and nitridation of Ta foil (ONTF) method. The light harvest, interfacial charge transfer, and charge separation of the two Ta3N5 photoanodes were analysed to gain insight into the role of the preparation method on the water splitting property. The results suggested that the ONTF-prepared Ta3N5 showed a higher solar energy conversion efficiency, arising from its better interfacial charge transfer efficiency and higher charge separation efficiency. The higher charge separation efficiency was mainly attributed to good electron transfer, and the inter-particle connectivity was key for the electron transfer in the photoanodes. Especially, the dense, small particle structure of ONTF-prepared Ta3N5 was beneficial for increasing the connectivity between inter-particles. This comparison of preparation methods can be used as a reference for future photoanode preparation to improve the water splitting property of photoelectrochemical cells.

Interfacial electron transfer of heterostructured MIL-88A/Ni(OH)2 enhances the oxygen evolution reaction in alkaline solutions

2020 ◽  
Vol 8 (6) ◽  
pp. 3311-3321 ◽  
Author(s):  
Zhengxin Qian ◽  
Keke Wang ◽  
Kexin Shi ◽  
Zhaoqin Fu ◽  
Zequn Mai ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Alkaline Solutions ◽  
Interfacial Electron Transfer ◽  
Interfacial Charge Transfer ◽  
Interfacial Charge

A facile strategy is developed to create a MIL-88A/Ni(OH)2 heterostructure, where the interfacial charge transfer significantly boosted the OER performance.

TiO2 as an interfacial-charge-transfer-bridge to construct eosin Y-mediated direct Z-scheme electron transfer over a Co9S8 quantum dot/TiO2 photocatalyst

2020 ◽  
Vol 10 (15) ◽  
pp. 5267-5280 ◽  
Author(s):  
Xuqiang Hao ◽  
Qingjie Guo ◽  
Mei Li ◽  
Zhiliang Jin ◽  
Ying Wang
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Quantum Dot ◽  
Eosin Y ◽  
Tio2 Photocatalyst ◽  
Interfacial Charge Transfer ◽  
Photocatalytic System ◽  
Interfacial Charge

A novel eosin Y-mediated Z-scheme Co9S8 QDs/TiO2 photocatalytic system was constructed and a high AQE of 37.4% is obtained at 470 nm for 20%Co9S8/TiO2 heterojunction.

scholarly journals Effects of co-adsorption on interfacial charge transfer in a quantum dot@dye composite

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Peng Cui ◽  
Yuan Xue
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Quantum Dot ◽  
Charge Separation ◽  
Density Functional ◽  
Co Adsorption ◽  
Hole Transfer ◽  
Interfacial Charge Transfer ◽  
Efficient Charge ◽  
Interfacial Charge

AbstractThe sensitive electronic environment at the quantum dot (QD)–dye interface becomes a roadblock to enhancing the energy conversion efficiency of dye-functionalized quantum dots (QDs). Energy alignments and electronic couplings are the critical factors governing the directions and rates of different charge transfer pathways at the interface, which are tunable by changing the specific linkage groups that connect a dye to the QD surface. The variation of specific anchors changes the binding configurations of a dye on the QD surface. In addition, the presence of a co-adsorbent changes the dipole–dipole and electronic interactions between a QD and a dye, resulting in different electronic environments at the interface. In the present work, we performed density functional theory (DFT)-based calculations to study the different binding configurations of N719 dye on the surface of a Cd33Se33 QD with a co-adsorbent D131 dye. The results revealed that the electronic couplings for electron transfer were greater than for hole transfer when the structure involved isocyanate groups as anchors. Such strong electronic couplings significantly stabilize the occupied states of the dye, pushing them deep inside the valence band of the QD and making hole transfer in these structures thermodynamically unfavourable. When carboxylates were involved as anchors, the electronic couplings for hole transfer were comparable to electron transfer, implying efficient charge separation at the QD–dye interface and reduced electron–hole recombination within the QD. We also found that the electronic couplings for electron transfer were larger than those for back electron transfer, suggesting efficient charge separation in photoexcited QDs. Overall, the current computational study reveals some fundamental aspects of the relationship between the interfacial charge transfer for QD@dye composites and their morphologies which benefit the design of QD-based nanomaterials for photovoltaic applications.

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