Effect of single walled carbon nanotubes on the threshold voltage of dye based photovoltaic devices

Chakraborty, S.; Manik, Nabin Baran

doi:10.1016/j.physb.2015.11.005

Cited by 12 publications

(4 citation statements)

References 30 publications

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“…It has been found that the device efficiency is maximum for 200 nm device layer thickness and efficiency reduces consequently with increasing thickness of active region.For minimum thickness of active layer the blocking impact of charges is minimum and conducting charges travel a minimum conducting path which inherently reduces the trapping problem [14][15][16][17]. Due to the lower effect of trapping energy series resistance effect for abovementioned layer thickness is small enough which enhance the probability of maximum conduction and therefore maximum efficiency is obtained.…”

Section: Resultsmentioning

confidence: 99%

Experimental Prediction of Effect of Thickness of Active Layer of Photovoltaic Device on a series of Electrical Parameters using GPVDM Software

Chakraborty¹,

Malakar²,

Mandal³

et al. 2019

IJASE

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Section: Resultsmentioning

confidence: 99%

Experimental Prediction of Effect of Thickness of Active Layer of Photovoltaic Device on a series of Electrical Parameters using GPVDM Software

Chakraborty¹,

Malakar²,

Mandal³

et al. 2019

IJASE

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“…1 mg of CV dye is added to the PMMA solution and stirred well for around 30 min.One part of this dye solution is separated in a beaker and 1 mg of ZnO nanoparticles are added to it and stirred well and is kept for several hours until all the substances are entirely dissolved to get the proper solution. After that the prepared solution is spin coated on both pre cleaned ITO coated glass and Al back electrode at a speed of 1500 rpm and then dried at a speed of 2500 rpm [8]. When the electrodes reach semi-dry state, they are sandwiched together to form the devices.…”

Section: Materials and Sample Preparationmentioning

confidence: 99%

Study on the Effect of Zinc Oxide Nanoparticles on Injection Barrier Height of Crystal Violet Dye Based Organic Device

Sen

Manik

2020

International Journal of Innovative Research in Physics

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Organic devices have achieved substantial progress due to its flexibility, cost effectiveness, simple processing and wide customizability. But there are certain limitations of these devices. One of the main limitations is the lower charge injection from metal electrodes to the organic layer which affects the performance of these devices. The charge injection process is strongly dependent on the injection barrier height at metal-organic layer interface. Due to high barrier height at metalorganic layer interface, the charge injection is reduced at the interface. Attempts need to be made to reduce the injection barrier height at metalorganic layer interface to improve the charge injection process. In the present work, we have studied the injection barrier height of Indium tin oxide coated glass/Crystal violet dye/Aluminium based organic device and subsequently we have also observed the effect of zinc oxide nanoparticles on injection barrier height of this device. Indium tin oxide coated glass and aluminium are used as front electrode and back electrode respectively to form this device. The device has been prepared with and without zinc oxide nanoparticles by using spin coating technique. We have analyzed the steady state current-voltage characteristics of the device to determine the barrier height of the device. Barrier height is reduced from 0.87 eV to 0.78 eV in the presence of zinc oxide nanoparticles. The barrier height is also estimated by using another alternative method which is known as Norde method. By using Norde method, barrier height is measured which reduces from 0.83 eV to 0.77 eV in presence of zinc oxide nanoparticles. Both the methods show good consistency with each other. Reduction of the injection barrier height in presence of zinc oxide nanoparticles indicates better charge injection through the metal-organic dye interface. The higher electron mobility of zinc oxide nanoparticles facilitates efficient charge injection at the interface. Thus, this work will be informative to study the effect of zinc oxide nanoparticles on injection barrier height as it reduces the barrier height to improve the charge flow at metalorganic dye interface.

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“…The field of organic electronics has managed to achieve significant improvement in device performance in the last few decades. Certain features such as cost-effectiveness, flexibility, and easy fabrication techniques make these organic dye-based devices very attractive to researchers [1][2]. Though there are many advantages of these organic dye-based devices and various aspects of the device performance have been understood, there are some limitations also.…”

Section: Introductionmentioning

confidence: 99%

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

Das¹,

Sen

Manik

2021

JNanoR

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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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Effect of single walled carbon nanotubes on the threshold voltage of dye based photovoltaic devices

Cited by 12 publications

References 30 publications

Experimental Prediction of Effect of Thickness of Active Layer of Photovoltaic Device on a series of Electrical Parameters using GPVDM Software

Experimental Prediction of Effect of Thickness of Active Layer of Photovoltaic Device on a series of Electrical Parameters using GPVDM Software

Study on the Effect of Zinc Oxide Nanoparticles on Injection Barrier Height of Crystal Violet Dye Based Organic Device

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

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