Improved Photocurrent in Ru(2,2‘-bipyridine-4,4‘-dicarboxylic acid)2(NCS)2/Di(3-aminopropyl)viologen/Single-Walled Carbon Nanotubes/Indium Tin Oxide System: Suppression of Recombination Reaction by Use of Single-Walled Carbon Nanotubes

2007 ◽  
Vol 111 (26) ◽  
pp. 9110-9115 ◽  
Author(s):  
Wonjoo Lee ◽  
Jungwoo Lee ◽  
Soo-Hyoung Lee ◽  
Jinho Chang ◽  
Whikun Yi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Dicarboxylic Acid ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Single Walled Carbon Nanotubes ◽  
Oxide System ◽  
Recombination Reaction ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

SEMICONDUCTING CARBON NANOTUBE PHOTOVOLTAIC PHOTODETECTORS

2011 ◽  
Vol 20 (03) ◽  
pp. 687-695 ◽  
Author(s):  
DOMINICK J. BINDL ◽  
MICHAEL S. ARNOLD
Keyword(s):  
Carbon Nanotubes ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Near Infrared ◽  
Series Resistance ◽  
Single Walled Carbon Nanotubes ◽  
Infrared Band ◽  
Device Architecture ◽  
Heterojunction Device ◽  
Walled Carbon Nanotubes

A photovoltaic photodetector harnessing near infrared band gap absorption by thin films of post-synthetically sorted semiconducting single walled carbon nanotubes ( s -SWCNTs) is described. Peak specific detectivity of 6×1011 Jones at -0.1 V bias at 1210 nm is achieved using a heterojunction device architecture: indium tin oxide/ ca. 5 nm s -SWCNT / 120 nm C60 / 10 nm 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP) / Ag. The photodiodes are characterized by a series resistance of 2.9 Ω cm2 and a rectification ratio of 104 at ±1V. These results are expected to guide the exploration of new classes of solution-processable, mechanically flexible, integrable, thin film photovoltaic photodetectors with tunable sensitivity in the visible and infrared spectra based on semiconducting carbon nanotubes.

Ultrafast hydrogen sensing through hybrids of semiconducting single-walled carbon nanotubes and tin oxide nanocrystals

Nanoscale ◽  
2012 ◽  
Vol 4 (4) ◽  
pp. 1275 ◽  
Author(s):  
Shun Mao ◽  
Shumao Cui ◽  
Kehan Yu ◽  
Zhenhai Wen ◽  
Ganhua Lu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Tin Oxide ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Hydrogen Sensing ◽  
Walled Carbon Nanotubes

Effect of Single Walled Carbon Nanotubes on the Series Resistance and Trap Energy of Malachite Green Dye Based Organic Device

2021 ◽  
Vol 69 ◽  
pp. 43-52
Author(s):  
Pallab Kumar Das ◽  
Sudipta Sen ◽  
Nabin Baran Manik
Keyword(s):  
Carbon Nanotubes ◽  
Malachite Green ◽  
Indium Tin Oxide ◽  
Series Resistance ◽  
Single Walled Carbon Nanotubes ◽  
Organic Layer ◽  
Trap Energy ◽  
Single Walled Carbon ◽  
Steady State Current ◽  
Walled Carbon Nanotubes

In this paper, we have estimated the series resistance (Rs) and the trap energy (Ec) of the sandwiched type Malachite Green (MG) dye-based organic device and have also observed the influence of single-walled carbon nanotubes (SWCNT) on both of these parameters. To form the organic device, we have used Indium Tin Oxide (ITO) coated glass as the front electrode and Aluminium (Al) as a back electrode by using the spin coating technique. The values of series resistance are measured from both I-V characteristics and by utilizing Cheung Function due to the non ideal behavior of organic devices. We have also extracted the values of Rs by using H (I) versus I plot and verified the values with the measured values of Rs from the Cheung function. The extracted values of series resistance using these three processes remain consistent with each other in showing that the values of series resistance have been reduced considerably in the presence of SWCNT. The trap energy has been estimated from the steady-state current-voltage characteristics. There is a significant correlation in between series resistance and the trap energy of the organic device. The presence of Single-Walled Carbon Nanotubes reduces the trap energy from 0.086 eV to 0.057 eV. Lowering of the trap energy of the metal-organic layer interface in presence of Single Walled Carbon Nanotubes attributes to the reduction of the value of the series resistance. The extracted value of Rs decreases from 0.154 MΩ to 0.0389 MΩ in presence of SWCNT. Decrease in the value of both of these parameters in the presence of SWCNT will definitely improve the charge transport mechanism of the organic device and thereby the conductivity.

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