All‐Green Solvent and Additive Combination Enables Efficient Nonfullerene Organic Solar Cells via Sequential Deposition Strategy

Zhang, Guangquan; Zhang, Wenqiang; Song, Hang; Kim, Seo Young; Chen, Haiyan; Yang, Changduk; Zhang, Youdi; Yang, Ke; Lu, Shirong

doi:10.1002/solr.202201076

Cited by 7 publications

(2 citation statements)

References 68 publications

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“…29 −31 In contrast with the random-blended structure formed by the single deposition process of blending donor and acceptor, this method focuses on inducing orderly phase composition, especially in the vertical direction. 32,33 However, in the gradient-blended devices, exciton dissociation and charge extraction are effectively promoted due to the simple and efficient charge transfer path. 34 More importantly, this fast and convenient operation process can be carried out as long as materials are dissolved without considering the complicated dynamic behavior of blending the donor and acceptor, so it is more beneficial to future commercial applications.…”

Section: Introductionmentioning

confidence: 99%

“…The similar conjugate backbones and side chains endowed the donor and acceptor with the ability to dissolve in similar solvents. Moreover, the interpenetrating network structure can be realized during the deposition of the upper acceptor, thus forming a pseudo-bilayer structure or a layer-by-layer structure. − In contrast with the random-blended structure formed by the single deposition process of blending donor and acceptor, this method focuses on inducing orderly phase composition, especially in the vertical direction. , However, in the gradient-blended devices, exciton dissociation and charge extraction are effectively promoted due to the simple and efficient charge transfer path . More importantly, this fast and convenient operation process can be carried out as long as materials are dissolved without considering the complicated dynamic behavior of blending the donor and acceptor, so it is more beneficial to future commercial applications …”

Section: Introductionmentioning

confidence: 99%

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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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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Multicomponent organic blend systems: A review of quaternary organic photovoltaics

N'Konou,

Kim,

Doumon

2024

Carbon Energy

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Embedding a third and/or fourth component into a binary blend active layer of organic photovoltaics (OPVs) is a promising approach to achieve high‐performance photovoltaic cells and modules. This multicomponent strategy favors absorption broadening via additional components. Quaternary OPV (QOPV) blends have four components in three possible configurations: (i) a donor and three acceptors, (ii) two donors and two acceptors, or (iii) three donors and an acceptor. Although quaternary systems have only been relatively recently studied compared to other systems in OPVs, leveraging the synergistic effects of the four components leads to record power conversion efficiencies, currently approaching 20%. QOPVs provide ample material choices for compatibility and channels for charge transfer mechanisms, possibly leading to optimized morphology and orientation. Reviewing recent progress in advancing QOPVs is essential for understanding their contribution to the OPV field. The review mainly discusses research progress in QOPVs with a keen interest in their various configurations, semitransparency, and outdoor and indoor applications. It describes the not‐well‐understood QOPV's general working mechanism. This review explores high‐performance QOPVs based on the fourth component's contribution as a donor, acceptor, or dye molecule and beyond in photovoltaic applications. Finally, there is a discussion around QOPV's outlook and projected future research directions in this field. This review intends to provide an overview of the quaternary systems approach to OPVs and inform current and future researchers on investigating the full spectrum of OPVs.

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Highly Efficient Organic Solar Cells with the Highly Crystalline Third Component as a Morphology Regulator

Sun,

Tan,

Zhang

et al. 2024

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The morphology of the active layer is crucial for highly efficient organic solar cells (OSCs), which can be regulated by selecting a rational third component. In this work, the highly crystalline nonfullerene acceptor BTP‐eC9 is selected as the morphology regulator in OSCs with PM6:BTP‐BO‐4Cl as the main system. The addition of BTP‐eC9 can prolong the nucleation and crystallization progress of acceptor and donor molecules, thereby enhancing the order of molecular arrangement. Meanwhile, the nucleation and crystallization time of the donor is earlier than that of the acceptors after introducing BTP‐eC9, which is beneficial for obtaining a better vertical structural phase separation. The exciton dissociation, charge transport, and charge collection are promoted effectively by the optimized morphology of the active layer, which improves the short‐circuit current density and filling factor. After introducing BTP‐eC9, the power conversion efficiencies (PCEs) of the ternary OSCs are improved from 17.31% to 18.15%. The PCE is further improved to 18.39% by introducing gold nanopyramid (Au NBPs) into the hole transport layer to improve photon utilization efficiency. This work indicates that the morphology can be optimized by selecting a highly crystalline third component to regulate the nucleation and crystallization progress of the acceptor and donor molecules.

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All‐Green Solvent and Additive Combination Enables Efficient Nonfullerene Organic Solar Cells via Sequential Deposition Strategy

Cited by 7 publications

References 68 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

Multicomponent organic blend systems: A review of quaternary organic photovoltaics

Highly Efficient Organic Solar Cells with the Highly Crystalline Third Component as a Morphology Regulator

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