The effect of irregularity from asymmetric random π-conjugated polymers on the photovoltaic performance of fullerene-free organic solar cells

Aryal, Um Kanta; Lee, Junwoo; Kranthiraja, Kakaraparthi; Reddy, Saripally Sudhaker; Sree, Vijaya Gopalan; Park, Jin Young; Song, Myungkwan; Jin, Sung Ho

doi:10.1039/c9py00461k

Cited by 15 publications

(9 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 1–4 ] A great material library of new CPs have been established, which together with surface engineering of the device interfacial layers and optimization of device fabrication procedures, have led to significant improvements of device performances in many electronic applications such as organic thin‐film transistors (OFETs), organic solar cells (OSCs), and so on. [ 5–10 ] Among tremendous efforts to elevate their device performances, the material design of new CPs with novel molecular structures and ideal physicochemical properties serves as the cornerstone for the success of the organic electronic areas. [ 11–14 ] Specifically, the backbone structures of CPs, not only has a crucial effect on the intramolecular π‐orbital overlap and delocalization, but also play an important role for enhancing the inter‐(macro)molecular interactions via π–π stacking.…”

Section: Introductionmentioning

confidence: 99%

Benzo/Naphthodifuranone‐Based Polymers: Effect of Perpendicular‐Extended Main Chain π‐Conjugation on Organic Field‐Effect Transistor Performances

Dai

Zheng

et al. 2021

Macromol. Rapid Commun.

View full text Add to dashboard Cite

For polymer semiconductors, the backbone structure plays an essential role in determining their physicochemical properties and charge transport behaviors. In this work, two donor–acceptor‐type polymers (P‐BDF and P‐NDF) based on benzodifuranone (BDF) and naphthodifunarone (NDF) as electron‐deficient moieties and indaceno‐dithiophene as electron‐rich groups are designed, synthesized and, for the first time, applied in organic field‐effect transistor. P‐BDF and P‐NDF differ from their backbone structures while P‐BDF has a more planar backbone conformation due to its smaller conjugated core size and P‐NDF features a perpendicular‐extended main chain structure. As a result, P‐BDF polymer exhibits bathochromic optical absorption, deeper molecular orbital energy levels, and more importantly, closer π‐stacking and stronger aggregation in the solid state and thus affords a more promising hole mobility of up to 0.85 cm2 V−1 s−1 in OFET devices, while that of the P‐NDF‐based devices is only 0.55 cm2 V−1 s−1. The results suggest the great potential of BDF/NDF‐type chromophores in constructing novel organic semiconductors and also indicate that the main chain coplanarity of polymer semiconductors is more essential than the sole extension of π‐conjugations (especially at the perpendicular direction of polymer main chains) for the design of high‐performance OFET materials.

show abstract

Section: Introductionmentioning

confidence: 99%

Benzo/Naphthodifuranone‐Based Polymers: Effect of Perpendicular‐Extended Main Chain π‐Conjugation on Organic Field‐Effect Transistor Performances

Dai

Zheng

et al. 2021

Macromol. Rapid Commun.

View full text Add to dashboard Cite

show abstract

“…Their results indicated that chlorination was an effective method to fine-tune conjugated polymer energy levels to improve device performance. Jin and co-workers 67 synthesized a novel random conjugated polymer asy-PBDTPBT (Fig. 5) and investigated the effects of random polymerization and the introduction of an asymmetric third component on its properties.…”

Section: Polymers Based On Symmetric Bdt and Asymmetric Unitsmentioning

confidence: 99%

Progress review of asymmetric polymers for organic solar cells

Zhao

Zhang

et al. 2022

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

“…Jin et al investigated the effect of irregularity ascribed to random 𝜋-conjugated random copolymers on the photovoltaic performance of NFA OSCs. [56] The group synthesized an asymmetric random copolymer, asy-PBDTPBT (herein P5), and used PB-DTP (herein P6) as the control polymer to prepare NFA OSCs. The best PCE value was obtained from the device based on P5:ITIC:Th active layer.…”

Section: Incorporated With Thiophenementioning

confidence: 99%

Thieno[3,4‐c]pyrrole‐4,6‐dione‐Based Conjugated Polymers for Nonfullerene Organic Solar Cells

Yaşa

Toppare

2022

Macro Chemistry & Physics

View full text Add to dashboard Cite

Donor-acceptor (D-A) conjugated polymers have gotten significant attention in the past decades. Wide application area, ease of production, and cost-effectiveness have made the D-A conjugated polymers a pivotal class of organic electronics. Organic solar cells (OSCs) became one of the most critical application areas of conjugated polymers among many. Up to the last decade, intensive research has been conducted on fullerene-based OSCs. Drawbacks of fullerene derivatives like high cost, production obstacles, and difficulties in modifying molecular structure made the academia seek new alternatives. Emerging nonfullerene acceptors (NFAs) draw a new path for academia to tune OSCs' power conversion efficiency (PCE). With the ease of synthesis and purification, modification of molecular structure via various functional groups, NFAs start outperforming fullerene-based acceptors. Thieno[3,4-c]pyrrole-4,6-dione (TPD) is widely used in D-A conjugated polymers for high-performance OSCs. As a strong electron-withdrawing group, TPD provides deepened lowest unoccupied molecular orbital energy level and wide bandgaps when introduced into polymer backbones, enhancing optoelectronic properties photovoltaic performance. Herein, an overview of the applications of TPD-based donor and acceptor type conjugated polymers for nonfullerene and all-polymer solar cells in the last 5 years is provided.

show abstract

The effect of irregularity from asymmetric random π-conjugated polymers on the photovoltaic performance of fullerene-free organic solar cells

Abstract: We synthesized a new random π-conjugated polymer (asy-PBDTPBT) and investigated the effect of its structural irregularity. The efficiency of non-fullerene OSCs was enhanced, showing the suppressed crystallinity and the smaller domain size.

Cited by 15 publications

References 26 publications

Benzo/Naphthodifuranone‐Based Polymers: Effect of Perpendicular‐Extended Main Chain π‐Conjugation on Organic Field‐Effect Transistor Performances

Benzo/Naphthodifuranone‐Based Polymers: Effect of Perpendicular‐Extended Main Chain π‐Conjugation on Organic Field‐Effect Transistor Performances

Progress review of asymmetric polymers for organic solar cells

Thieno[3,4‐c]pyrrole‐4,6‐dione‐Based Conjugated Polymers for Nonfullerene Organic Solar Cells

Contact Info

Product

Resources

About