Designing dithieno-benzodithiophene-based small molecule donors for thickness-tolerant and large-scale polymer solar cells

Wang, Shanshan; Xu, Lin-Yong; Xiao, Bo; Chen, Mingxia; Zhang, Meimei; Gao, Wei; Xiao, Biao; Jen, Alex K.-Y.; Yang, Renqiang; Min, Jie; Sun, Rui

doi:10.1039/d3ee04300b

Energy Environ. Sci.

2024

DOI: 10.1039/d3ee04300b

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Designing dithieno-benzodithiophene-based small molecule donors for thickness-tolerant and large-scale polymer solar cells

Shanshan Wang,

Lin-Yong Xu,

Bo Xiao

et al.

Abstract: The power conversion efficiency (PCE) of polymer solar cells (PSCs) has steadily improved, but there are still some unresolved issues. One problem is that the active layer is highly sensitive...

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A High‐Performance Organic Photovoltaic System with Versatile Solution Processability

Shao,

Gao,

Sun

et al. 2024

Advanced Materials

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Recently developed organic photovoltaic (OPV) materials have simultaneously closed the gaps in efficiency, stability, and cost for single‐junction devices. Nonetheless, the developed OPV materials still pose big challenges in meeting the requirements for practical applications, especially regarding the prevalent issues of solution processability. Herein, a highly efficient polymer donor, named DP3, incorporating an electron‐rich benzo[1,2‐b:4,5‐b′]dithiophene unit as well as two similar and simple acceptor units is presented. Its primary objective is to enhance the interchain and/or intrachain interactions and ultimately fine‐tune bulk‐heterojunction microstructure. The DP3:L8‐BO system demonstrates the highest power conversion efficiency (PCE) of 19.12%. This system also exhibits high‐performance devices with over 18% efficiencies for five batches with various molecular weights (23.6–80.8 KDa), six different blend thicknesses (95–308 nm), differenced coating speeds (3.0–29.1 m min−1), with promising PCEs of 18.65% and 15.53% for toluene‐processed small‐area (0.029 cm2) cells and large‐area (15.40 cm2) modules, thereby demonstrating versatile solution processability of the designed DP3:L8‐BO system that is a strong candidate for commercial applications.

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A High‐Performance Organic Photovoltaic System with Versatile Solution Processability

Shao,

Gao,

Sun

et al. 2024

Advanced Materials

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show abstract

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Designing dithieno-benzodithiophene-based small molecule donors for thickness-tolerant and large-scale polymer solar cells

Abstract: The power conversion efficiency (PCE) of polymer solar cells (PSCs) has steadily improved, but there are still some unresolved issues. One problem is that the active layer is highly sensitive...

Cited by 1 publication

References 62 publications

A High‐Performance Organic Photovoltaic System with Versatile Solution Processability

A High‐Performance Organic Photovoltaic System with Versatile Solution Processability

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