Article
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Optimization and Efficiency Enhancement of Modified Polymer Solar Cells
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Version 1
: Received: 10 August 2023 / Approved: 10 August 2023 / Online: 11 August 2023 (09:41:02 CEST)
A peer-reviewed article of this Preprint also exists.
Khan, M.R.; Jarząbek, B. Optimization and Efficiency Enhancement of Modified Polymer Solar Cells. Polymers 2023, 15, 3674. Khan, M.R.; Jarząbek, B. Optimization and Efficiency Enhancement of Modified Polymer Solar Cells. Polymers 2023, 15, 3674.
Abstract
In this study organic bulk heterojunction (BHJ) solar cell along with the spiro OMeTAD as a hole transport layer (HTL) and the PDINO as an electron transport layer (ETL) was simulated through the Solar Capacitance Simulator, one dimensional (SCAPS-1D) software to examine the performance of this type of polymer thin film organic solar cells. As an active layer the blend of polymer donor PBDB-T and non-fullerene acceptor ITIC-OE was used. Numerical simulation was performed by varying the thickness of HTL and active layer. Firstly, the HTL layer thickness was optimized to 50 nm, after that the active layer thickness varied up to 80 nm. These results of simulation demonstrated that the HTL thickness has rather little impact on efficiency while in the case of active layer thickness improves efficiency significantly. The temperature effect on the performance of solar cells was considered, by the simulation performed for temperature from 300 K up to 400 K and the efficiency of solar cell decreases with increasing temperature. Generally, polymer films usually are full of traps and defects, the density of defects (Nt) value was also introduced to the simulation, and it was confirmed that with the increasing of defect density (Nt), the efficiency of solar cell decreases. After thickness, temperature and defect density optimization, the reflection coating was also applied on it. It turned out that by introducing the reflection coating on the back side of solar cell, the efficiency increases by 2.5 %. Additionally, the positive effect of HTL and ETL doping on efficiency of this type of solar cells was demonstrated.
Keywords
Polymer thin films; BHJ organic solar cells; Hole transport layer (HTL); Electron transport layer (ETL); Reflection coating; SCAPS-1D simulation
Subject
Chemistry and Materials Science, Polymers and Plastics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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