Inhibiting Excessive Molecular Aggregation to Achieve Highly Efficient and Stabilized Organic Solar Cells by Introducing Star-Shaped Nitrogen Heterocyclic-Ring Acceptor

2022 ◽  
Author(s):  
Xunfan Liao ◽  
Qian Xie ◽  
Yaxiao Guo ◽  
Qiannan He ◽  
Zeng Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Heterocyclic Ring ◽  
Molecular Aggregation ◽  
Highly Efficient ◽  
And Performance ◽  
And Migration ◽  
The Stability ◽  
Nitrogen Heterocyclic

Inhibiting excessive aggregation and migration of active layer molecules is essential to improve the stability and performance of organic solar cells (OSCs). Herein, the star-shaped nitrogen heterocyclic-ring acceptor TF1 featuring...

The Study of Crystallization of Polyfluorene and Fullerene Derivatives in Semiconducting Layer of Organic Solar Cells

2017 ◽  
Vol 751 ◽  
pp. 435-441
Author(s):  
Wantana Koetniyom ◽  
Anusit Keawprajak ◽  
Kanpitcha Jiramitmongkon ◽  
Udom Asawapirom
Keyword(s):  
Crystal Structure ◽  
Solar Cells ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Acid Methyl Ester ◽  
Acid Methyl ◽  
A Cell ◽  
And Performance ◽  
Xrd And Tem

This research was focused on the effect of solid crystallization additive namely 1,4-dichlorobenzene (PDCB) in the 1:2 (w/w) active layer of benzothiadiazole/thiophene-based copolymers (PFTBzTT) to [6,6]-phenyl-C61 butyric acid methyl ester (PCBM) on the morphology and performance of bulk heterojunction (BHJ) organic solar cells. The active layer was deposited by spin-coating with chloroform solutions by different PDCB additive concentrations from 0-52 mg/ml. The inclusion of additive into the polymer solution was able to improve the performance of BHJ solar cells. The maximum power conversion efficiency (PCE) of 0.84% achieved for a cell with PDCB concentration of 36 mg/ml after annealing at 180 °C for 20 min. The XRD and TEM techniques used to analyse the crystal structure and morphology of the thin films. From these results were found that PDCB additive presented higher level of PCBM crystal structure by more aggregation of PCBM and a larger extent of phase separation than those of the films without additive. The AFM results demonstrated that the optimum PDCB concentration and annealing process helped PCBM aggregated into micron sized crystal rods.

A blade-coated highly efficient thick active layer for non-fullerene organic solar cells

2019 ◽  
Vol 7 (39) ◽  
pp. 22265-22273 ◽  
Author(s):  
Lin Zhang ◽  
Heng Zhao ◽  
Baojun Lin ◽  
Jian Yuan ◽  
Xianbin Xu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Thick Film ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Molecular Packing ◽  
Large Area ◽  
Highly Efficient ◽  
Blade Coating

Highly efficient large-area thick-film organic solar cells were fabricated by blade-coating with finely controlling the molecular packing.

Effect of thermal annealing on active layer morphology and performance for small molecule bulk heterojunction organic solar cells

2014 ◽  
Vol 2 (35) ◽  
pp. 7247-7255 ◽  
Author(s):  
Zuo Yi ◽  
Wang Ni ◽  
Qian Zhang ◽  
Miaomiao Li ◽  
Bin Kan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Thermal Annealing ◽  
Active Layer ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
And Performance ◽  
The Impact

Bulk heterojunction solar cells based on a novel small molecule (DRDTSBDTT) were systematically investigated to understand the impact of thermal annealing on Voc, Jsc and FF.

Highly efficient organic solar cells using a solution-processed active layer with a small molecule donor and pristine fullerene

2014 ◽  
Vol 2 (11) ◽  
pp. 3709-3714 ◽  
Author(s):  
Hao-Wu Lin ◽  
Jung-Hao Chang ◽  
Wei-Ching Huang ◽  
Yu-Ting Lin ◽  
Li-Yen Lin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Compounds ◽  
Active Layer ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Solution Processed ◽  
Alkyl Chains ◽  
Highly Efficient ◽  
Coating Methods

Efficient SMOSCs with a solution-processed active layer composed of organic compounds without long alkyl chains as donors and pristine C70 as the acceptor have been successfully achieved by spin- and bar-coating methods.

High Throughput Screening of Highly Efficient Non-fullerene Acceptor based Organic Solar Cells Assisted by a Multi-Dataset Scientific Robot

2019 ◽  
Author(s):  
Enrique Pascual-San-José ◽  
Xabier Rodríguez-Martínez ◽  
Fei Zhuping ◽  
Martin Heeney ◽  
Roger Guimerà-Manrique ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Throughput ◽  
Organic Solar Cells ◽  
High Throughput Screening ◽  
Highly Efficient

The Effects of Chromophore Halogenation on the Stability of UV‐Absorbing Organic Solar Cells

2021 ◽  
pp. 2100225
Author(s):  
Tianran Liu ◽  
Quinn C. Burlingame ◽  
Jeni C. Sorli ◽  
Melissa L. Ball ◽  
Guangming Cheng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
The Stability
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