Efficient D1:D2:A ternary all-polymer solar cell with optimized photoactive layer morphology realized by compatible two polymer donor

Ma, Kaige; Jin, Jianghao; Shen, Wenfei; Mao, Sui; Belfiore, Laurence A.; Tang, Jianguo

doi:10.1016/j.optmat.2023.114735

Cited by 5 publications

(11 citation statements)

References 49 publications

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“…where k stands for the shape factor of ∼0.9 and fwhm stands for the full width at half-maximum of the diffraction peaks. 16 Notably, the calculated CCL was 24.0 Å for D18/Y6:ZY-4Clbased films, which is higher than the values of 23.2 Å for D18-Cl/Y6 and 22.8 Å for D18-Cl/ZY-4Cl films. The smaller interlayer distance of d 010 = 3.61 Å for ternary films illustrates that the incorporation of ZY-4Cl enhances the π−π stacking.…”

Section: Photovoltaic Performancesmentioning

confidence: 69%

High-Efficiency Ternary Polymer Solar Cells with a Gradient-Blended Structure Fabricated by Sequential Deposition

Jin,

Wang,

Shen

et al. 2024

ACS Appl. Mater. Interfaces

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Acquiring the ideal blend morphology of the active layer to optimize charge separation and collection is a constant goal of polymer solar cells (PSCs). In this paper, the ternary strategy and the sequential deposition process were combined to make sufficient use of the solar spectrum, optimize the energy-level structure, regulate the vertical phase separation morphology, and ultimately enhance the power conversion efficiency (PCE) and stability of the PSCs. Specifically, the donor and acceptor illustrated a gradient-blended distribution in the sequential deposition-processed films, thus resulting in facilitated carrier characteristics in the gradient-blended devices. Consequently, the PSCs based on D18-Cl/Y6:ZY-4Cl have achieved a device efficiency of over 18% with the synergetic improvement of open-circuit voltage (V OC), short-circuit current density (J SC), and fill factor (FF). Therefore, this work reveals a facile approach to fabricating PSCs with improved performance and stability.

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Section: Photovoltaic Performancesmentioning

confidence: 69%

High-Efficiency Ternary Polymer Solar Cells with a Gradient-Blended Structure Fabricated by Sequential Deposition

Jin,

Wang,

Shen

et al. 2024

ACS Appl. Mater. Interfaces

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“…The device with DRTB-T-C4 as the second donor yielded a PCE of 17.05% with a J sc of 24.68 mA cm –2 and a fill factor (FF) of 80.88%. The excellent FF results from higher exciton dissociation and effective charge transport in the ternary cells, indicating that adding the DRTB-T-C4 would increase the transport efficiency of the device’s interface and further improve PCE . For polymers/polymers/polymers type, Cui et al adopted PDI-2T as the third component to regulate the vertical compositional profile and assist the exciton diffusion and charge transfer (CT) of the PM6/PY-IT blend.…”

Section: Introductionmentioning

confidence: 99%

“…The excellent FF results from higher exciton dissociation and effective charge transport in the ternary cells, indicating that adding the DRTB-T-C4 would increase the transport efficiency of the device's interface and further improve PCE. 6 For polymers/polymers/polymers type, Cui et al adopted PDI-2T as the third component to regulate the vertical compositional profile and assist the exciton diffusion and charge transfer (CT) of the PM6/PY-IT blend. The ternary blend PM6/PY-IT/PDI-2T yielded a PCE of over 16% and a J sc of 23.97 mA cm −2 , proving that exciton diffusion length can be lengthened by adding PDI-2T in the active layer and further ensuring the exciton's effective separation in the interfaces.…”

Section: Introductionmentioning

confidence: 99%

“…It broadens the idea of the T-OSCs device morphology optimization project. 6 Although the T-OSCs strategy has excellent performance and has caused widespread concern, many investigations have focused on device fabrication and morphology characterization. What is the radical reason for the improvement in device performance?…”

Section: Introductionmentioning

confidence: 99%

“…Solar energy is one of the most dynamic green renewable energies in recent years, and solar cells are the most efficient devices for directly converting solar energy into electricity, which is considered a promising value-added application. − Organic solar cells (OSCs) have attracted substantial attention because of their advantages of easy fabrication, low cost, and easy-to-prepare flexible, large-area, or translucent devices . Over the past decades, advancement efforts in the design and synthesis of optoelectronic materials, interfacial engineering, and device manufacturing processes − have led to continuous improvement with power conversion efficiencies (PCEs) exceeding 20% for OSCs, showing the bright future of the commercial application.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhanced Charge Separation and Short-Circuit Current by Doping with Chlorophyll in Cascaded Ternary Solar Cells

Zang,

Ma,

Song

et al. 2024

ACS Appl. Energy Mater.

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Ternary architecture incorporating the third component is a facile and effective method to enhance the device's performance and create excellent application prospects. However, the synergistic gain performances of multiple donors or acceptors still lack research, so exploring the mechanism of ternary organic solar cells (T-OSCs) at the microlevel is urgent. Here, a T-OSC device with the chlorophyll dye Chl-47 as the third component is constructed, pointing out that the doped Chl-47 could effectively compensate for the shortcomings of the binary device of J61/PADIOD-T, such as light absorption, energy level, and mobility. Besides, simulations at different scales show that introducing Chl-47 will affect the interfacial configuration and further adjust the charge transfer pathway. It was found that the blend of J61/ Chl-47/PADIOD-T exhibits the cascade model and multistep hopping mechanism, favoring interfacial charge separation. Furthermore, global modeling is used to evaluate the relevant parameters associated with experimental characterization. Although J61/Chl-47/ PADIOD-T has smaller V oc and FF, larger J sc leads to significant photoelectric conversion efficiency, indicating that the multistep hopping mechanism is essential for improving J sc . Therefore, this study reveals the micro mechanism and provides ideas for further screening efficient T-OSCs.

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Impact of alloy‐like phase on energy loss mitigation in multi‐component organic photovoltaics

Kong,

Zhan,

et al. 2024

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The multi‐component strategy has proven effective in advancing the performance of organic photovoltaics (OPVs), enhancing photocurrent and fill factor through spectral complementarity and morphology optimization. However, the open‐circuit voltage (VOC) mechanism in multi‐component systems lacks systematic investigation. In this study, we explore the influence of alloy‐like phases on energy level distribution and energy loss mechanisms in multi‐component OPVs. Appropriate modulation of donor alloy‐like phases maintains the original intermolecular stacking, enhances component compatibility, reduces acceptor aggregation, and improves acceptor phase purity, mitigating non‐radiative recombination losses. Additionally, suitable alloy‐like phase modulation elevates charge transfer (CT) states, reducing the gap between CT and local exciton state, lowering reorganization energy, and alleviating radiative recombination loss below the bandgap. Through synergistic optimization (layer‐by‐layer method with solid additive), ternary devices based on Y6 acceptor achieve a notable 19.41% power conversion efficiency, offering new insights for the analysis of the energy loss of the multi‐component OPVs.

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Efficient D1:D2:A ternary all-polymer solar cell with optimized photoactive layer morphology realized by compatible two polymer donor

Cited by 5 publications

References 49 publications

High-Efficiency Ternary Polymer Solar Cells with a Gradient-Blended Structure Fabricated by Sequential Deposition

High-Efficiency Ternary Polymer Solar Cells with a Gradient-Blended Structure Fabricated by Sequential Deposition

Enhanced Charge Separation and Short-Circuit Current by Doping with Chlorophyll in Cascaded Ternary Solar Cells

Impact of alloy‐like phase on energy loss mitigation in multi‐component organic photovoltaics

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