Explore Fused-Ring Core incorporated A-π-D-π-A Type Acceptors and their application in Organic Solar Cells: insight into molecular conformation, optical and electrochemical properties, film morphology, and energy loss

2021 ◽  
pp. 109572
Author(s):  
Zhuohan Zhang ◽  
Jintao Zhu ◽  
Yifan Lv ◽  
Ai Lan ◽  
Hong Lu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Loss ◽  
Electrochemical Properties ◽  
Organic Solar Cells ◽  
Molecular Conformation ◽  
Film Morphology ◽  
Fused Ring ◽  
Ring Core ◽  
Insight Into

High-Performance and Low-Energy Loss Organic Solar Cells with Non-fused Ring Acceptor by Alkyl Chain Engineering

2021 ◽  
pp. 129768
Author(s):  
Dou Luo ◽  
Xue Lai ◽  
Nan Zheng ◽  
Chenghao Duan ◽  
Zhaojin Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Loss ◽  
Organic Solar Cells ◽  
High Performance ◽  
Alkyl Chain ◽  
Low Energy ◽  
Fused Ring

Simultaneously improving the photovoltaic parameters of organic solar cells via isomerization of benzo[b]benzo[4,5]thieno[2,3-d]thiophene-based octacyclic non-fullerene acceptors

2020 ◽  
Vol 8 (19) ◽  
pp. 9684-9692 ◽  
Author(s):  
Zhijie Zhou ◽  
Jiamin Duan ◽  
Linglong Ye ◽  
Guo Wang ◽  
Bin Zhao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Fused Ring ◽  
Photovoltaic Parameters ◽  
Ring Core

Three isomeric FREAs were synthesized and applied in organic solar cells. The OSC devices based on Z1-bb exhibited a PCE of 12.66%. The isomerization of a fused-ring core could be achieve high-performance OSCs with high Jsc, Voc, and FF.

scholarly journals A helical perylene diimide-based acceptor for non-fullerene organic solar cells: synthesis, morphology and exciton dynamics

2018 ◽  
Vol 5 (5) ◽  
pp. 172041 ◽  
Author(s):  
Li Chen ◽  
Mingliang Wu ◽  
Guangwei Shao ◽  
Jiahua Hu ◽  
Guiying He ◽  
...  
Keyword(s):  
Solar Cells ◽  
Thermal Annealing ◽  
Organic Solar Cells ◽  
Carrier Transport ◽  
Molecular Conformation ◽  
Transient Absorption ◽  
High Sensitivity ◽  
Perylene Diimide ◽  
Film Morphology ◽  
Femtosecond Transient Absorption

Helical perylene diimide-based (hPDI) acceptors have been established as one of the most promising candidates for non-fullerene organic solar cells (OSCs). In this work, we report a novel hPDI-based molecule, hPDI 2 -CN 2 , as an electron acceptor for OSCs. Combining the hPDI 2 -CN 2 with a low-bandgap polymeric donor (PTB7-Th), the blending film morphology exhibited high sensitivity to various treatments (such as thermal annealing and addition of solvent additives), as evidenced by atomic force microscope studies. The power conversion efficiency (PCE) was improved from 1.42% (as-cast device) to 2.76% after thermal annealing, and a PCE of 3.25% was achieved by further addition of 1,8-diiodooctane (DIO). Femtosecond transient absorption (TA) spectroscopy studies revealed that the improved thin-film morphology was highly beneficial for the charge carrier transport and collection. And a combination of fast exciton diffusion rate and the lowest recombination rate contributed to the best performance of the DIO-treated device. This result further suggests that the molecular conformation needs to be taken into account in the design of perylene diimide-based acceptors for OSCs.

A small molecule donor containing a non-fused ring core for all-small-molecule organic solar cells with high efficiency over 11%

2019 ◽  
Vol 7 (8) ◽  
pp. 3682-3690 ◽  
Author(s):  
Xinxin Li ◽  
Yan Wang ◽  
Qinglian Zhu ◽  
Xia Guo ◽  
Wei Ma ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Fused Ring ◽  
Ring Core

All-small-molecule OSCs based on a new small molecule, P2TBR, with a non-fused ring core exhibited a record-breaking PCE of 11.5%.

Ternary Strategy Enabling High‐Performance Organic Solar Cells with Optimized Film Morphology and Reduced Nonradiative Energy Loss

Solar RRL ◽  
2021 ◽  
pp. 2100806
Author(s):  
Miao Li ◽  
Yuanyuan Zhou ◽  
Ming Zhang ◽  
Yahui Liu ◽  
Zaifei Ma ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Loss ◽  
Organic Solar Cells ◽  
High Performance ◽  
Film Morphology
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