I am
Asghar Rismanchi
Researcher, Event Organizer, Startup Group Coacher, Designer, Optoelectronic Device Developer, Scientific Report Writer, Programmer
I am
Learn About Me
Asghar Rismanchi is a PhD.candidate of textile engineering-textile chemistry and fiber sciences in university of guilan. He has been developing his doctoral thesis in field of flexible perovskite solar cell. His current research intersts are modelling, simulation, optimazation, development and fabrication of flexible optoelectronic devices specially solar cell technology. He has a solid knowledge on broad range of smart textile device. He likes developing science in the world.
Reserach
95%
Flexible Optoelectronic Development
75%
Solar Cell Design
90%
Scientific Report Writing
55%
Event Organizing
85%
Startup Group Coaching
75%
Programming
35%
What I do
Research in all field of science with high quality.
Idea to startup based on your purpose.
Carrying out your research project from theory to practice in order to achieve the goal.
Scientific report writing with suitable accuracy.
My Resume
Pricing Plan
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My Team
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From Blog
In this research, the carbon fabric (CF) is coated with polypyrrole (PPy) monomer via electropolymerisation and used as a flexible counter electrode. The polypyrrole coated carbon fabric (PPy-CF) counter electrode surface shows a homogenous coating of the polypyrrole film. The PPy-CF counter electrode exhibits appropriate electrical conductivity and suitable electron/hole charge transfer in the electrode/electrolyte interface in the electrical double layer (EDL) and adequate redox electrocatalytic activity. Also, dye-sensitised solar cell (DSSC) based on the PPy-CF counter electrode achieved 3.86% of power conversion efficiency (PCE). Furthermore, drift-diffusion modelling, based on the homogenisation theory has been established to appraise the photovoltaic performance. This study extends novel visions towards applying electro-conductive fabric based on polypyrrole for the optoelectronic textile devices.
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Perovskite solar cell (PSC) consisting textile-based electrodes has been created novel features for future energy supply. Recently, Cs0.05(FA0.85MA0.15)0.95Pb(I0.85Br0.15)3 perovskite has appeared as a favorable candidate for flexible perovskite solar cells. However, a confined performance was acquired when the conventional Spiro-OMeTAD were used as hole transport layer (HTL) material because of suboptimal valance band offset (ΔEV) between Perovskite/HTL layers. In this study, a theoretical drift diffusion modelling is used by finite volume method (FVM) to investigate performance of textile perovskite solar cell with double hole transport layers (HTLs) with graded band gap energies. Copper thiocyanate (CuSCN) and Nickel Oxide (NiO) are replaced as double HTLs, which dramatically enhanced the performance due to optimal upward step by step valance band offsets (ΔEV) between Perovskite/Textile Composite Electrode layers. It is shown that the decreasing of the metal-semiconductor schottky barrier height of electrodes leads to significant increase in fill factor (FF). Also, it is revealed that the enriching of perovskite carrier diffusion length by equipoising of carrier capture cross section, carrier total defect density and carrier thermal velocity substantially promote the overall device efficiency. The short-circuit current (Jsc) of 20.65 mA/cm2, open-circuit voltage (Voc) of 1.19 V, fill factor (FF) of 73.57%, and power conversion efficiency (PCE) of 18.20% have been obtained by optimization of electrodes properties and perovskite layers. Remarkably, the advantageous of low cost, flexible, and chemical stable conducive textile composite, extends new opportunities in the commercial expansion of highly efficient photovoltaic textile in optoelectronic industry field.
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