ORGANIC CuPc COATING INDUCED IMPROVED PHOTOLUMINESCENCE AND PHOTOCONDUCTIVITY OF ZnO NANOWIRES ARRAY

2012 ◽  
Vol 05 (03) ◽  
pp. 1250021 ◽  
Author(s):  
SOUMEN DHARA ◽  
P. K. GIRI
Keyword(s):  
Charge Transfer ◽  
Dark Current ◽  
Surface Defects ◽  
Green Emission ◽  
Charge Transfer Process ◽  
Current Ratio ◽  
Uv Emission ◽  
Surface Covering ◽  
Interfacial Charge ◽  
Nanowires Array

In this work, we investigated the effect of organic CuPc coating on the surface of the ZnO NWs for possible improvement in the photoluminescence, photoconductivity and photoresponse. As a result of surface covering, the UV emission is enhanced by a factor of 7–8 while the green emission is reduced to half. Despite an increase in dark current after the CuPc covering, we obtained a significant improvement in the photocurrent and photoresponse rate. The photocurrent-to-dark current ratio is nearly doubled and the photoresponse process becomes faster for the ZnO/CuPc heterostructure. Improvements in the photoluminescence and photoconductivity for the ZnO/CuPc heterostructure are explained on the basis of modification of surface defects and interfacial charge transfer process.

Targeted and selective HOMO energy control by fine regulation of molecular planarity and its effect on the interfacial charge transfer process in dye-sensitized solar cells

2019 ◽  
Vol 21 (11) ◽  
pp. 6256-6264 ◽  
Author(s):  
Fengyu Zhang ◽  
Ran Wang ◽  
Yajun Wang ◽  
Xiaomin Zhang ◽  
Bo Liu
Keyword(s):  
Charge Transfer ◽  
Transfer Process ◽  
Dye Sensitized Solar Cells ◽  
Charge Transfer Process ◽  
Energy Control ◽  
Dye Sensitized ◽  
Fine Regulation ◽  
Homo Level ◽  
Sensitized Solar Cells ◽  
Interfacial Charge

The HOMO level can be targeted and selectively controlled by regulating the molecular planarity of a dye.

Charge transfer process at the Ag/MPH/TiO2interface by SERS: alignment of the Fermi level

2016 ◽  
Vol 18 (43) ◽  
pp. 30053-30060 ◽  
Author(s):  
Xiaolei Zhang ◽  
Huimin Sui ◽  
Xiaolei Wang ◽  
Hongyang Su ◽  
Weina Cheng ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Fermi Level ◽  
Transfer Process ◽  
Au Nanoparticle ◽  
Charge Transfer Process ◽  
Interfacial Charge Transfer ◽  
Interfacial Charge

A nanoscale metal–molecule–semiconductor assembly (Ag/4-mercaptophenol/TiO2) has been fabricated over Au nanoparticle (NP) films as a model to study the interfacial charge transfer (CT) effects involved in Ag/MPH/TiO2.

Electrochemical fabrication and interfacial charge-transfer process of Ni/GaN(0001) electrodes

2016 ◽  
Vol 18 (8) ◽  
pp. 6032-6036
Author(s):  
Shuang-Jiao Qin ◽  
Fei Peng ◽  
Xue-Qing Chen ◽  
Ge-Bo Pan
Keyword(s):  
Charge Transfer ◽  
Single Crystal ◽  
Transfer Process ◽  
Charge Transfer Process ◽  
Interfacial Charge Transfer ◽  
First Time ◽  
Electrochemical Fabrication ◽  
Interfacial Charge

A detailed study of the electrodeposition of Ni on single-crystal n-GaN(0001). The interfacial charge-transfer process of Ni/n-GaN was explored for the first time.

Uniform decoration of UiO-66-NH2 nanooctahedra onto TiO2 electrospun nanofibers for enhancing photocatalytic H2 production based on multi-step interfacial charge transfer

2021 ◽  
Author(s):  
Jie Wang ◽  
Zhen-Gang Sun ◽  
Xiaoyi Jiang ◽  
Qing Yuan ◽  
Da-Peng Dong ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Charge Transfer ◽  
Metal Organic Frameworks ◽  
Electrospun Nanofibers ◽  
H2 Production ◽  
Charge Transfer Process ◽  
Efficient Charge ◽  
Metal Organic ◽  
Inorganic Semiconductor ◽  
Interfacial Charge

Metal-organic frameworks (MOFs) materials have been extensively incorporated with inorganic semiconductor photocatalysts to improve the photocatalytic activity through an efficient charge transfer process across their hetero-interface. In this work, octahedral...

Energetic states in SnO2–TiO2 structures and their impact on interfacial charge transfer process

2016 ◽  
Vol 52 (1) ◽  
pp. 260-275 ◽  
Author(s):  
David Ramírez-Ortega ◽  
Próspero Acevedo-Peña ◽  
Francisco Tzompantzi ◽  
Rubén Arroyo ◽  
Federico González ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transfer Process ◽  
Charge Transfer Process ◽  
Interfacial Charge Transfer ◽  
Interfacial Charge
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