Chemical optimization of benzo-dithiophene and benzo-[2,1,3]thiadiazole copolymers for the high performance, green-solvent-processed polymer solar cells

Chen, Yunxiang; You, Guofeng; Lin, Xinyu; Yuan, Xiyue; Zou, Ding; Wang, Wen; Yang, Renqing; Zhen, Hongyu; Ling, Qidan

doi:10.1016/j.solener.2018.08.036

Cited by 4 publications

(2 citation statements)

References 49 publications

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“…Subsequently, considering further enhancing the electronegativity of acceptor unit in the main-chain engineering is an effective molecular design strategy, Shen et al [163] and Liu et al [136] based on the polymer backbone BDT-TR-BTDz-TR, reported PBTFBT (2013) and PB4 (2015) by introducing two "F" atoms into the BTDz unit. Afterward, PBDT2FBT-Th (2015) , [273] PBDT2FBT-Ph (2015) , [273] PBDTS-DTFBT (2016) , [73] PBDTOT-FBT (2016) , [73] PBDTOT-BT (2016) , [148] PBDTBP-DTffBT (2016) , [274] P1(1.0: 0.0) (2016) , [151] PBDT-DTBTff (2017) , [57] P3 (2017) , [268] PBDTEDOT-FBT (2018) , [269] PBDT-FBT (2018) , [275] PBDTF-FBT (2018) , [275] PBDTS-FBT (2018) , [275] PBDTSF-FBT (2018) [275] and PBTF (2018) [276] were also successfully synthesized. Among these donors, due to "F" atom with a strong electron-withdrawing optimizes the HOMO energy level of polymer donors as well as promotes the hole/electron mobility in corresponding OSCs.…”

Section: As For the Main-chain Engineering Bdt-t-bsdz-t Bdt-t-btz-t A...mentioning

confidence: 99%

“…[327] However, J sc and FF were significantly decreased in P2TB2T-F: IT-4F based and P2TB2T-Cl: IT-4F based OSCs, which can be attributed to the degradation of light absorbance as well as blend film morphology in the active layer. In order to further explore the molecular design strategy of D-π-π-A-π-π type main-chain engineering, PBDT-C12NT (2014) , [328] P1 (2018) , [329] PdC8ThDT-S (2018) , [313] PBTTF-C6 (2018) , [276] PBTTF-H (2018) , [276] PBDT (2021) [330] and PBDT-S (2021) [330] were reported by different research teams. Among them, although the highly conjugated molecular structure endows most polymer donors with a high V oc in OSC devices, especially for PBDT: Y6 based (0.88 V), PBDT-S: Y6 based (0.90 V), PdC8ThDT-S: ITIC based (0.89 V) and PBTTF-C6: PC 71 BM based (0.97 V) OSCs, low J sc and FF are still major obstacles.…”

Section: Multicomponent Polymer Donorsmentioning

confidence: 99%

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Research progress and application of high efficiency organic solar cells based on benzodithiophene donor materials

Lin,

Peng,

Shi

et al. 2023

Preprint

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In recent decades, the demand for clean and renewable energy has grown increasingly urgent due to the irreversible alteration of the global climate. As a result, efficient organic solar cells (OSCs) have gradually gained attention as a study hotspot. To break up this dilemma, this paper reviews the molecular design strategies of benzodithiophen (BDT)-based polymer and small molecule donor materials since their birth, focusing on the development of main-chain engineering, side-chain engineering and other unique molecular design paths. Up to now, the state-of-the-art power conversion efficiency (PCE) of binary OSCs prepared by BDT-based donor materials has approached 20%. Our work detailly discusses the potential relationship between the molecular changes of donor materials and photoelectric performance in corresponding OSC devices, thereby presenting a rational molecular design guidance for stable and efficient donor materials in future.

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Section: As For the Main-chain Engineering Bdt-t-bsdz-t Bdt-t-btz-t A...mentioning

confidence: 99%

Section: Multicomponent Polymer Donorsmentioning

confidence: 99%

Research progress and application of high efficiency organic solar cells based on benzodithiophene donor materials

Lin,

Peng,

Shi

et al. 2023

Preprint

View full text Add to dashboard Cite

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Research progress and application of high efficiency organic solar cells based on benzodithiophene donor materials

Lin,

Peng,

Shi

et al. 2024

Exploration

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In recent decades, the demand for clean and renewable energy has grown increasingly urgent due to the irreversible alteration of the global climate change. As a result, organic solar cells (OSCs) have emerged as a promising alternative to address this issue. In this review, we summarize the recent progress in the molecular design strategies of benzodithiophene (BDT)‐based polymer and small molecule donor materials since their birth, focusing on the development of main‐chain engineering, side‐chain engineering and other unique molecular design paths. Up to now, the state‐of‐the‐art power conversion efficiency (PCE) of binary OSCs prepared by BDT‐based donor materials has approached 20%. This work discusses the potential relationship between the molecular changes of donor materials and photoelectric performance in corresponding OSC devices in detail, thereby presenting a rational molecular design guidance for stable and efficient donor materials in future.

show abstract

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

et al. 2019

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Chemical optimization of benzo-dithiophene and benzo-[2,1,3]thiadiazole copolymers for the high performance, green-solvent-processed polymer solar cells

Cited by 4 publications

References 49 publications

Research progress and application of high efficiency organic solar cells based on benzodithiophene donor materials

Research progress and application of high efficiency organic solar cells based on benzodithiophene donor materials

Research progress and application of high efficiency organic solar cells based on benzodithiophene donor materials

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

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