scholarly journals Nano Focus: “Hidden” mid-gap electronic states control charge transport and photoconduction in semiconducting nanocrystal films

MRS Bulletin ◽  
2011 ◽  
Vol 36 (12) ◽  
pp. 950-950
Author(s):  
Mousumi Mani Biswas
Keyword(s):  
Charge Transport ◽  
Electronic States ◽  
Nanocrystal Films

scholarly journals Composite formation in CdSe:Cu2Se nanocrystal films, charge transport characteristics and heterojunction performance

RSC Advances ◽  
2020 ◽  
Vol 10 (15) ◽  
pp. 8842-8852 ◽  
Author(s):  
N. Sajid Babu ◽  
M. Abdul Khadar
Keyword(s):  
Charge Transport ◽  
Composite Formation ◽  
Nanocrystal Films

The use of nanocrystals as materials for potential technological applications depends on tailoring their properties through intentional doping with external impurities.

Real-time monitoring of trap dynamics reveals the electronic states that limit charge transport in crystalline organic semiconductors

2020 ◽  
Vol 7 (9) ◽  
pp. 2390-2398
Author(s):  
Hamna F. Iqbal ◽  
Emma K. Holland ◽  
John E. Anthony ◽  
Oana D. Jurchescu
Keyword(s):  
Thin Film ◽  
Charge Transport ◽  
Real Time ◽  
Organic Semiconductors ◽  
Thin Film Transistors ◽  
Electronic States ◽  
Organic Thin Film Transistors ◽  
Organic Thin Film ◽  
Real Time Monitoring

Access to the dynamics of trap annihilation/generation resulting from isomer rearrangement identifies the performance-limiting processes in organic thin-film transistors.

Low-temperature charge transport inPrBa2Cu4O8: Electronic states of the doped Cu-O chain

1996 ◽  
Vol 54 (17) ◽  
pp. 11993-11996 ◽  
Author(s):  
I. Terasaki ◽  
N. Seiji ◽  
S. Adachi ◽  
H. Yamauchi
Keyword(s):  
Low Temperature ◽  
Charge Transport ◽  
Electronic States

Optoelectronic properties and depth profile of charge transport in nanocrystal films

2017 ◽  
Vol 96 (3) ◽  
Author(s):  
Willi Aigner ◽  
Oliver Bienek ◽  
Derese Desta ◽  
Hartmut Wiggers ◽  
Martin Stutzmann ◽  
...  
Keyword(s):  
Charge Transport ◽  
Depth Profile ◽  
Optoelectronic Properties ◽  
Nanocrystal Films

Temperature-dependent charge transport in copper indium diselenide nanocrystal films

2012 ◽  
Vol 111 (7) ◽  
pp. 073703 ◽  
Author(s):  
Christopher J. Lombardo ◽  
Vahid A. Akhavan ◽  
Matthew G. Panthani ◽  
Brian W. Goodfellow ◽  
Brian A. Korgel ◽  
...  
Keyword(s):  
Charge Transport ◽  
Copper Indium Diselenide ◽  
Temperature Dependent ◽  
Copper Indium ◽  
Nanocrystal Films

Effect of Electronic States of Triphenylamine Derivatives on Their Charge Transport Properties

1991 ◽  
Vol 30 (Part 2, No. 9B) ◽  
pp. L1656-L1658 ◽  
Author(s):  
Sukekazu Aratani ◽  
Tsuneaki Kawanishi ◽  
Atsushi Kakuta
Keyword(s):  
Charge Transport ◽  
Transport Properties ◽  
Electronic States

scholarly journals Voltage-induced long-range coherent electron transfer through organic molecules

2019 ◽  
Vol 116 (13) ◽  
pp. 5931-5936 ◽  
Author(s):  
Karen Michaeli ◽  
David N. Beratan ◽  
David H. Waldeck ◽  
Ron Naaman
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Charge Transport ◽  
Molecular Orbital ◽  
Organic Semiconductors ◽  
Electronic States ◽  
Long Distance ◽  
Damage Repair ◽  
Limited Temperature ◽  
Voltage Dependent

Biological structures rely on kinetically tuned charge transfer reactions for energy conversion, biocatalysis, and signaling as well as for oxidative damage repair. Unlike man-made electrical circuitry, which uses metals and semiconductors to direct current flow, charge transfer in living systems proceeds via biomolecules that are nominally insulating. Long-distance charge transport, which is observed routinely in nucleic acids, peptides, and proteins, is believed to arise from a sequence of thermally activated hopping steps. However, a growing number of experiments find limited temperature dependence for electron transfer over tens of nanometers. To account for these observations, we propose a temperature-independent mechanism based on the electric potential difference that builds up along the molecule as a precursor of electron transfer. Specifically, the voltage changes the nature of the electronic states away from being sharply localized so that efficient resonant tunneling across long distances becomes possible without thermal assistance. This mechanism is general and is expected to be operative in molecules where the electronic states densely fill a wide energy window (on the scale of electronvolts) above or below the gap between the highest-occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO). We show that this effect can explain the temperature-independent charge transport through DNA and the strongly voltage-dependent currents that are measured through organic semiconductors and peptides.

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