Small-Molecule Donor/Polymer Acceptor Type Organic Solar Cells: Effect of Terminal Groups of Small-Molecule Donors

Miao, Junhui; Meng, Bin; Li, Jun; Wang, Lixiang

doi:10.1055/s-0039-3401017

Cited by 5 publications

(3 citation statements)

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“…相比 BTR:P-BNBP-fBT 体系和 DR3TBDTT:P-BNBP-fBT 体系的二元共混, BTR [64,119] . [120] [64] [66] . 版权 2020, 英国皇家化学学会.…”

Section: 通过添加剂调控小分子给体/含 B←n 配位键的高分子受体共混相分离形貌unclassified

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Research Progress in Organic Solar Cells Based on Small Molecule Donors and Polymer Acceptors

Miao¹,

Ding²,

Li³

et al. 2021

Acta Chimica Sinica

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Due to their advantages of low cost, flexibility and light weight, organic solar cells (OSCs) are considered to be a promising photovoltaic technology for practical applications and have received great attentions. The active layers of OSCs are the blends of conjugated small molecule/polymer electron donors and electron acceptors. Before 2013, the most-widely used electron acceptors are fullerene derivatives. Nevertheless, the weak absorption in the visible region, limited electronic tunability, and poor morphological stability hinder their further application in OSCs. Non-fullerene electron acceptors with good light harvesting ability and tunable energy levels have developed rapidly in past few years. Based on the types of electron donor and acceptor materials, non-fullerene OSCs may be classified into four types, including polymer donor/polymer acceptor blend (PD/PA), polymer donor/small molecule acceptor blend (PD/MA), small molecule donor/polymer acceptor blend (MD/PA), and small molecule donor/small molecule acceptor blend (MD/MA). Among various kinds of OSCs, MD/PA-type OSCs possess the excellent morphology stability under thermal stress, which is worthy of further study. Although the advantages of MD/PA-type OSCs, there are still large challenges in their development. The power conversion efficiencies (PCEs) of MD/PA-type OSCs are still much lower than that of other type OSCs, due to the limited material combination of small molecule donors and polymer acceptors and undesirable phase separation morphology of the active layers. In this review, we summarize the research progress of OSCs based on small molecule donors and polymer acceptors, and introduce the active layer material systems from three type polymer acceptors, i.e. the imide group, cyano group and boron-nitrogen coordination bond (B←N) unit based polymer acceptors. Benefiting from the development of both donor and acceptor materials as well as the manipulation of phase-separation morphology in active layers, the good match between small molecule donors and polymer acceptors is achieved. This not only boosts the large improvement in PCE from 0.29% to 9.51%, but also contributes to a high-temperature tolerant photovoltaic device. Finally, we also present an outlook of the future development of high-performance MD/PA-type OSCs.

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“…相比 BTR:P-BNBP-fBT 体系和 DR3TBDTT:P-BNBP-fBT 体系的二元共混, BTR [64,119] . [120] [64] [66] . 版权 2020, 英国皇家化学学会.…”

Section: 通过添加剂调控小分子给体/含 B←n 配位键的高分子受体共混相分离形貌unclassified

“…子给体/高分子受体型有机太阳能电池, 通过合适的手段调控共混的相分离形貌是提升器件性能的关键. 为此, 刘俊等 [64][65][66][117][118][119][120] 基于含 B←N 的高分子受体材料, 针对小分子给体/高分子受体体系共混的相分离尺寸大的问题, 开展了一系列工作.…”

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Research Progress in Organic Solar Cells Based on Small Molecule Donors and Polymer Acceptors

Miao¹,

Ding²,

Li³

et al. 2021

Acta Chimica Sinica

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“…[10] Heteroarylene polymers and conjugated arylene compounds with donorÀπÀacceptor (DÀπÀA) structures are the most studied classes of OSCs. Out of these DÀπÀA, [11][12][13][14][15] star-shaped molecules (SSMs) have attracted the attention of researchers due to their numerous benefits which they show over linear molecules. These advantages include a number of pathways for conversion of light, [16] low anisotropy, and high solubility.…”

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Novel Star‐Shaped Benzotriindole‐Based Nonfullerene Donor Materials: Toward the Development of Promising Photovoltaic Compounds for High‐Performance Organic Solar Cells

et al. 2022

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The development of novel photovoltaic materials for solar cell applications is a fascinating area of current research. Star‐shaped materials with promising photovoltaic features have attracted scientists for boosting the progress of organic solar cells (OSCs). Herein, seven novel star‐shaped molecules (DA1‐DA7) are developed quantum chemically from the experimentally synthesized BTI(2 T‐DCV‐Hex)3 molecule. The open‐circuit voltage (Voc), transition density matrix heat maps, density of state (DOS), overlap DOS, frontier molecular orbital, UV−visible, binding energy (Eb), hole (λh) and electron (λe) reorganizational energy, and highest occupied molecular orbital (HOMO)donor−lowest unoccupied molecular orbital (LUMO)PC61BM charge transfer analysis are performed to explore the optoelectronic properties. Newly developed molecules exhibit promising optoelectronic features with reduced energy gap (2.43−1.97 eV), transition energy (1.89−1.45 eV), λe (0.00149328−0.00101405 Eh), λh (0.0066471−0.0028843 Eh), broadened λmax (655−856 nm), and high Voc (2.07−1.65 V), as compared with reference BTI(2 T‐DCV‐Hex)3 values 2.82 eV, 2.28 eV, 0.00176501 Eh, 0.0060877 Eh, and 544 nm, 1.65 V, respectively. The developed molecules have proficient hole and electron transfer mobilities and can serve as best candidates when blended with PC61BM film. These eye‐catching results recommend the novel star‐shaped compounds for future development of high‐performance OSCs.

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Organic solar cells based on small molecule donor and polymer acceptor

Chang

Zhu

et al. 2022

Chinese Chemical Letters

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Small-Molecule Donor/Polymer Acceptor Type Organic Solar Cells: Effect of Terminal Groups of Small-Molecule Donors

Cited by 5 publications

References 49 publications

Research Progress in Organic Solar Cells Based on Small Molecule Donors and Polymer Acceptors

Research Progress in Organic Solar Cells Based on Small Molecule Donors and Polymer Acceptors

Novel Star‐Shaped Benzotriindole‐Based Nonfullerene Donor Materials: Toward the Development of Promising Photovoltaic Compounds for High‐Performance Organic Solar Cells

Organic solar cells based on small molecule donor and polymer acceptor

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