Ultrafast Charge Transfer from CdSe Quantum Dots to p-Type NiO: Hole Injection vs Hole Trapping

2014 ◽  
Vol 118 (32) ◽  
pp. 18462-18471 ◽  
Author(s):  
Kaibo Zheng ◽  
Karel Žídek ◽  
Mohamed Abdellah ◽  
Wei Zhang ◽  
Pavel Chábera ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Charge Transfer ◽  
Hole Injection ◽  
Cdse Quantum Dots ◽  
Hole Trapping ◽  
Ultrafast Charge Transfer ◽  
P Type

scholarly journals Hydrophilic, Hole-Delocalizing Ligand Shell to Promote Charge Transfer from Colloidal CdSe Quantum Dots in Water

2017 ◽  
Vol 121 (28) ◽  
pp. 15160-15168 ◽  
Author(s):  
Jonathan R. Lee ◽  
Wei Li ◽  
Alexander J. Cowan ◽  
Frank Jäckel
Keyword(s):  
Quantum Dots ◽  
Charge Transfer ◽  
Cdse Quantum Dots ◽  
Ligand Shell

Charge transfer properties of phthalocyaninato zinc complexes for organic field-effect transistors: tuning semiconductor nature via peripheral substituents

2011 ◽  
Vol 15 (09n10) ◽  
pp. 964-972
Author(s):  
Ronghua Guo ◽  
Lijuan Zhang ◽  
Yuexing Zhang ◽  
Yongzhong Bian ◽  
Jianzhuang Jiang
Keyword(s):  
Charge Transfer ◽  
Field Effect ◽  
Density Functional ◽  
Field Effect Transistors ◽  
Electron Injection ◽  
Zinc Complexes ◽  
Hole Injection ◽  
Type Semiconductor ◽  
P Type ◽  
Injection Barrier

Density functional theory (DFT) calculations were carried out to investigate the semiconductor performance of a series of phthalocyaninato zinc complexes, namely Zn[Pc(β-OCH3)8] (1), ZnPc (2), and Zn[Pc(β-COOCH3)8] (3) {[ Pc(β-OCH3)8]2- = dianion of 2,3,9,10,16,17,23,24-octamethoxyphthalocyanine; Pc2- = dianion of phthalocyanine; [ Pc(β-COOCH3)8]2- = dianion of 2,3,9,10,16,17,23,24-octamethoxycarbonylphthalocyanine} for organic field effect transistor (OFET). The effect of peripheral substituents on tuning the nature of phthalocyaninato zinc semiconductor has been clearly revealed. Introduction of eight weak electron-donating methoxy groups onto the peripheral positions of ZnPc (2) leads to a decrease in the hole injection barrier relative to Au electrode and an increase in the electron injection barrier, making compound 1 a better p-type semiconductor material in comparison with 2. In contrast, peripheral methoxycarbonyl substitution depresses the energy level of LUMO and thus induces an increase for the electron affinity (EA) value of ZnPc (2), resulting in the change of semiconductor nature from p-type for ZnPc (2) to n-type for Zn[Pc(β-COOCH3)8] (3) due to the improved electron injection ability. The calculated charge transfer mobility for hole is 1.05 cm2.V-1.s-1 for 1 and 5.33 cm2.V-1.s-1 for 2, while that for electron is 0.16 cm2.V-1.s-1 for 3. The present work should be helpful for designing and preparing novel phthalocyanine semiconductors in particular with good n-type OFET performance.

The impact of electrostatic interactions on ultrafast charge transfer at Ag29 nanoclusters–fullerene and CdTe quantum dots–fullerene interfaces

2016 ◽  
Vol 4 (14) ◽  
pp. 2894-2900 ◽  
Author(s):  
Ghada H. Ahmed ◽  
Manas R. Parida ◽  
Alberto Tosato ◽  
Lina G. AbdulHalim ◽  
Anwar Usman ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Charge Transfer ◽  
Electrostatic Interactions ◽  
Cdte Quantum Dots ◽  
Cdte Qds ◽  
Ultrafast Charge Transfer ◽  
The Impact

We report how electrostatic interactions significantly impact charge transfer at CdTe QDs/fullerene interfaces.

Photoinduced Charge Transfer between CdSe Quantum Dots andp-Phenylenediamine

2003 ◽  
Vol 107 (37) ◽  
pp. 10088-10093 ◽  
Author(s):  
Shailesh N. Sharma ◽  
Zeena S. Pillai ◽  
Prashant V. Kamat
Keyword(s):  
Quantum Dots ◽  
Charge Transfer ◽  
Cdse Quantum Dots ◽  
Photoinduced Charge Transfer ◽  
Photoinduced Charge
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