Design of an Efficient PTB7:PC70BM-Based Polymer Solar Cell for 8% Efficiency

Alahmadi, Ahmed N. M.

doi:10.3390/polym14050889

Cited by 25 publications

(25 citation statements)

References 51 publications

(51 reference statements)

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“…SCAPS is a one-dimensional solar cell simulator developed at the department of Electronics and Information Systems (ELIS) of the University of Gent, Belgium. The SCAPS software has been extensively utilized in the modeling and simulation of thin-film devices, including organic and polymer solar cells [ 32 , 33 , 34 , 39 ]. The simulator solves Poisson’s equation, coupled simultaneously with electron and hole continuity equations.…”

Section: Simulation Approach and Solar Cell Structurementioning

confidence: 99%

“…Incorporating a non-fullerene ITIC acceptor with a PBDB-T donor has been investigated and the optimization of the cell gave an efficiency of 14.25% [ 32 ]. The system ITO/PEDOT:PSS/PT7B:PC70BM/PFN-Br/Ag has been simulated and, upon optimization, a maximum PCE of 8% has been reached [ 33 ]. In [ 34 ], the PTB7:PC 70 BM blend has been explored with different electron transport layer (ETL) materials, and it was found that Zn(O,S) is the most suitable partner, that achieved a PCE of 17.15%.…”

Section: Introductionmentioning

confidence: 99%

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Device Modeling of Efficient PBDB-T:PZT-Based All-Polymer Solar Cell: Role of Band Alignment

2023

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In this study, we present some design suggestions for all-polymer solar cells by utilizing device simulation. The polymer solar cell under investigation is formed by a photoactive film of a blend comprising PBDB-T as a polymer donor and PZT as a polymerized small molecule acceptor. The initial cell is based on a fabricated cell whose structure is ITO/PEDOT:PSS/PBDB-T:PZT/PFN-Br/Ag, which has a power conversion efficiency (PCE) of about 14.9%. A calibration procedure is then performed by comparing the simulation results with experimental data to confirm the simulation models, and the material parameters, implemented in the SCAPS (Solar Cell Capacitance Simulator) simulator. To boost the open circuit voltage, we investigate a group of hole transport layer (HTL) materials. An HTL of CuI or P3HT, that may replace the PEDOT:PSS, results in a PCE of higher than 20%. However, this enhanced efficiency results in a minor S-shape curve in the current density-voltage (J-V) characteristic. So, to suppress the possibility of the appearance of an S-curve, we propose a double HTL structure, for which the simulation shows a higher PCE with a suppressed kink phenomenon due to the proper band alignment. Moreover, the designed cell is investigated when subjected to a low light intensity, and the cell shows a good performance, signifying the cell’s suitability for indoor applications. The results of this simulation study can add to the potential development of highly efficient all-polymer solar cells.

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Section: Simulation Approach and Solar Cell Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Device Modeling of Efficient PBDB-T:PZT-Based All-Polymer Solar Cell: Role of Band Alignment

2023

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“…The whole set of simulation parameters for the designed layers was selected from the literature published in its entirety in [ 36 , 37 , 40 , 41 , 50 , 51 , 52 , 53 , 54 , 55 ]. Numerous material properties must be addressed before simulation, including the donor and acceptor density (N A , N D ), electron and hole mobility (µ n , µ p ), etc.…”

Section: Numerical Modeling Of Devicementioning

confidence: 99%

Performance Analysis and Optimization of a PBDB-T:ITIC Based Organic Solar Cell Using Graphene Oxide as the Hole Transport Layer

et al. 2022

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The hole transport layer (HTL) in organic solar cells (OSCs) plays an imperative role in boosting the cell’s performance. PEDOT: PSS is a conventional HTL used in OSCs owing to its high design cost and instability issues. It can be replaced with graphene oxide to increase the cell performance by overcoming instability issues. Graphene oxide (GO) has gained popularity in recent years for its practical use in solar energy due to its remarkable mechanical, electrical, thermal, and optical properties. This work uses SCAPS-1D to examine the results of graphene oxide (GO)-based organic solar cells by giving a comparison between the performance of absorber layers and a GO-based HTL to see which absorber material interacts more strongly with GO. The absorber layer PBDB-T:ITIC paired with GO as HTL outperforms the other absorber layers due to its better optical and electrical characteristics. Numerical simulations are performed within the SCAPS software at various absorber layer thicknesses, defect densities, and doping values to assess the influence on device performance and efficiency. After cell optimization, the best efficiency of an improved OSC is found to be 17.36%, and the outcomes of the simulated OSC are referenced to the results of the experimentally implemented OSC. These results provide a possible future direction for developing GO-based OSCs with higher efficiency.

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“…Typically, cells with a PTB7-Th:PC70BM active layer have efficiency between 8% and 9%, 53,54 with a recorded PCE of about 11%. 55 Our cells showed lower efficiency at 5.5%; however, they were optimized for repeatability.…”

Section: Properties Of Solar Cellsmentioning

confidence: 99%

The Impact of the Presence of Aromatic Rings in the Substituent on the Performance of C60/C70 Fullerene-Based Acceptor Materials in Photovoltaic Cells

Mech

Piotrowski

Zarębska

et al. 2022

J. Electron. Mater.

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In this work, a series of C60/C70 fullerene derivatives bearing non-aromatic and mono-, bi-, tri- and tetracyclic aryl-substituents was synthesized according to the modified Bingel method and characterized using spectral methods: ESI-MS, 1H NMR, 13C NMR, UV–Vis, FT-IR and cyclic voltammetry (CV). HOMO and LUMO energy levels and the band gaps for optimized structures of reported fullerene derivatives were determined according to the DFT functionals, B3LYP 6-31G(d) and PBE/6-311G(d,p). Results obtained from CV and UV–Vis measurements, which showed very good agreement, were compared to calculated theoretical values also revealing satisfactory level of compliance of the obtained results. We have studied the impact of presence and number of aromatic rings in malonate substituent of C60/C70 fullerene derivatives employed as acceptor materials on performance of BHJ solar cells prepared using PTB7-Th as donor material. We successfully prepared solar cells based on all the synthesized compounds, and the highest performance of the obtained photovoltaic devices was observed for fullerene derivatives bearing monocyclic and bicyclic aromatic moieties. The obtained voltage was about 0.8 V and current density was above 10 mA/cm2. Optical studies showed absorption edges at 1.9 eV and 1.8 eV for C60 and C70 derivatives, respectively, with absorption coefficients comparable to C60/C70 PCBM samples. Photocurrent spectroscopy showed 20–40% quantum efficiency. Long-term ageing measurements showed T80 time between 105 days and 115 days for derivatives with phenyl and naphthalene substituents. Taking into account that synthesis of reported fullerene derivatives is very convenient, the reported compounds are very promising materials for construction of BHJ solar cells.

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Design of an Efficient PTB7:PC70BM-Based Polymer Solar Cell for 8% Efficiency

Cited by 25 publications

References 51 publications

Device Modeling of Efficient PBDB-T:PZT-Based All-Polymer Solar Cell: Role of Band Alignment

Device Modeling of Efficient PBDB-T:PZT-Based All-Polymer Solar Cell: Role of Band Alignment

Performance Analysis and Optimization of a PBDB-T:ITIC Based Organic Solar Cell Using Graphene Oxide as the Hole Transport Layer

The Impact of the Presence of Aromatic Rings in the Substituent on the Performance of C60/C70 Fullerene-Based Acceptor Materials in Photovoltaic Cells

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