Enhanced photovoltaic performances via ternary blend strategy employing a medium-bandgap D-A type alternating copolymer as the single donor

Chen, Yu; You, Guofeng; Zou, Ding; Zhuang, Qixin; Zhen, Hongyu; Ling, Qidan

doi:10.1016/j.solener.2019.03.029

Cited by 8 publications

(3 citation statements)

References 59 publications

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“…The solar cells were fabricated in the following architectures: ITO/PEDOT:PSS/POBDFBT:ITIC/PFN/Al, ITO/PEDOT:PSS/POBDFBT:PCBM/PFN/Al and ITO/PEDOT:PSS/POBDFBT:PCBM:ITIC/PFN/Al. Power conversion efficiencies were calculated to be 6.16%, 6.23% and 7.91%, respectively [ 130 ]. Sharma et al fabricated a ternary solar cell using BODIPY-thiophene-based conjugated polymer.…”

Section: Polymers In Bulk-heterojunction Solar Cells (Bhj)mentioning

confidence: 99%

Polymers in High-Efficiency Solar Cells: The Latest Reports

et al. 2022

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Third-generation solar cells, including dye-sensitized solar cells, bulk-heterojunction solar cells, and perovskite solar cells, are being intensively researched to obtain high efficiencies in converting solar energy into electricity. However, it is also important to note their stability over time and the devices’ thermal or operating temperature range. Today’s widely used polymeric materials are also used at various stages of the preparation of the complete device—it is worth mentioning that in dye-sensitized solar cells, suitable polymers can be used as flexible substrates counter-electrodes, gel electrolytes, and even dyes. In the case of bulk-heterojunction solar cells, they are used primarily as donor materials; however, there are reports in the literature of their use as acceptors. In perovskite devices, they are used as additives to improve the morphology of the perovskite, mainly as hole transport materials and also as additives to electron transport layers. Polymers, thanks to their numerous advantages, such as the possibility of practically any modification of their chemical structure and thus their physical and chemical properties, are increasingly used in devices that convert solar radiation into electrical energy, which is presented in this paper.

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Section: Polymers In Bulk-heterojunction Solar Cells (Bhj)mentioning

confidence: 99%

Polymers in High-Efficiency Solar Cells: The Latest Reports

et al. 2022

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“…8d) which provide channels for charge transportation. 29 The homogeneous phase separation indicates good miscibility between PDFTB and ITIC, which contributes to exciton dissociation, charge separation and transport and promotes J SC of the devices. 18,30 The AFM and TEM images reveal that uorination on the polymer backbone can effectively promote the surface morphology and the miscibility between donor and acceptor simultaneously, which may be favorable for higher J SC .…”

Section: Charge Transport Propertiesmentioning

confidence: 99%

Fluorination effects on bithiophene unit in benzodithiophene-4,8-dione based D–A type alternating copolymers for highly efficient polymer solar cells

Chen

2022

RSC Adv.

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“…Fullerene derivatives were used as the third component to modify thin-film morphology towards a more suitable blend crystallinity, leading to a fibrous or continuous interpenetrating network to provide more charge transport channels for efficient charge transport. [62][63][64][65][66] It might be possible to modify NFA-based binary OPVs with insufficient charge mobility caused by poor morphology. 67 Thus, more balanced charge mobility with increased electron mobility is formed.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

High-Performance Ternary Organic Solar Cells Enabled by Synergizing Fullerene and Non-fullerene Acceptors

Jiang

Zhu

2021

Organic Materials

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With the development of the non-fullerene acceptor (NFA), the use of ternary organic photovoltaic devices based on a fullerene acceptor and a NFA is now widespread, and the merits of both acceptor types can be fully utilized. However, the effective approach of enhancing device performance is adjusting the charge dynamics and the thin-film morphology of the active layer via introducing the second acceptor, which would significantly impact the open-circuit voltage, the short-circuit current, and the fill factor, thus strongly affecting device efficiency. The functions of the second acceptor in a ternary organic solar cell with a fullerene acceptor and a NFA are summarized here. These include a broader absorption spectrum; formation of a cascade energy level or energy transfer; modified thin-film morphology including phase separation, effects on crystallinity, size, and purity of domain; and vertical distribution along with improved charge dynamics like exciton dissociation and charge transport, collection, and recombination. Then, we discuss the hierarchical morphology in ternary solar cells may benefit device performance and the outlook of the ternary device.

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Enhanced photovoltaic performances via ternary blend strategy employing a medium-bandgap D-A type alternating copolymer as the single donor

Cited by 8 publications

References 59 publications

Polymers in High-Efficiency Solar Cells: The Latest Reports

Polymers in High-Efficiency Solar Cells: The Latest Reports

Fluorination effects on bithiophene unit in benzodithiophene-4,8-dione based D–A type alternating copolymers for highly efficient polymer solar cells

High-Performance Ternary Organic Solar Cells Enabled by Synergizing Fullerene and Non-fullerene Acceptors

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