Effect of Single Walled Carbon Nanotubes on the Series Resistance and Trap Energy of Malachite Green Dye Based Organic Device
- 30 August 2021
- journal article
- research article
- Published by Trans Tech Publications, Ltd. in Journal of Nano Research
- Vol. 69, 43-52
- https://doi.org/10.4028/www.scientific.net/jnanor.69.43
Abstract
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.Keywords
This publication has 25 references indexed in Scilit:
- Calculation of the Electronic Parameters of an Al/DNA/p-Si Schottky Barrier Diode Influenced by Alpha RadiationSensors, 2015
- Use of Carbon Nanotubes (CNTs) with Polymers in Solar CellsMolecules, 2014
- Fabrication of SWCNT-Ag Nanoparticle Hybrid Included Self-Assemblies for Antibacterial ApplicationsPLOS ONE, 2014
- On the identification of deeper defect levels in organic photovoltaic devicesJournal of Applied Physics, 2013
- Bulk and contact resistance in P3HT:PCBM heterojunction solar cellsSolar Energy Materials and Solar Cells, 2011
- Electrical characterization of the organic semiconductor Ag/CuPc/Au Schottky diodeJournal of Semiconductors, 2011
- Effect of back electrode on photovoltaic properties of crystal-violet-dye-doped solid-state thin filmIonics, 2008
- Growth Mechanism of Oriented Long Single Walled Carbon Nanotubes Using “Fast-Heating” Chemical Vapor Deposition ProcessNano Letters, 2004
- Heterojunction properties of electrodeposited CdTe/CdS solar cellsJournal of Applied Physics, 2001
- Extraction of Schottky diode parameters from forward current-voltage characteristicsApplied Physics Letters, 1986