Synergistic Modifications of Side Chains and End Groups in Small Molecular Acceptors for High Efficient Non-Fullerene Organic Solar Cells

Solar RRL ◽  
2018 ◽  
Vol 2 (8) ◽  
pp. 1800053 ◽  
Author(s):  
Huanran Feng ◽  
Yuan-Qiu-Qiang Yi ◽  
Xin Ke ◽  
Yamin Zhang ◽  
Xiangjian Wan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Side Chains ◽  
High Efficient ◽  
End Groups

Optimization of Active Layer Morphology by Small Molecule Donor Design Enables over 15% Efficiency in All-Small-Molecule Solar Cells

2021 ◽  
Author(s):  
Cunbin An ◽  
Yunpeng Qin ◽  
Tao Zhang ◽  
Qianglong Lv ◽  
Jinzhao Qin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Side Chains ◽  
High Efficient

Molecular innovation is highly important to achieve high-efficient small-molecule organic solar cells (SMOSCs). Herein, we report two small molecule donors, B3T-T and B3T-P, differing only in conjugated side chains with...

Fluorinated heptacyclic carbazole-based ladder-type acceptors with aliphatic side chains for efficient fullerene-free organic solar cells

2019 ◽  
Vol 3 (5) ◽  
pp. 829-835 ◽  
Author(s):  
Tsung-Wei Chen ◽  
Yu-Tang Hsiao ◽  
You-Wei Lin ◽  
Chia-Chih Chang ◽  
Wei-Tsung Chuang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Side Chain ◽  
Side Chains ◽  
End Groups

Side chain engineering (phenyl side chains to aliphatic side chains) and fluorinated end groups (IC to 2FIC) are utilized to construct high performance NFA with high planarity.

scholarly journals Efficient Solar Cells Based on a Polymer Donor with β-Branching in Trialkylsilyl Side Chains

2021 ◽  
Vol 03 (02) ◽  
pp. 134-140
Author(s):  
Haijun Bin ◽  
Martijn M. Wienk ◽  
René A. J. Janssen
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Short Circuit ◽  
Energy Levels ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Side Chains ◽  
Photovoltaic Properties ◽  
Alkyl Groups ◽  
High Efficient

Side-chain engineering is an important strategy in designing novel polymer semiconductor materials for high-efficient organic solar cells. The use of trialkylsilyl side chains can improve the photovoltaic efficiency by decreasing the energy of the HOMO of the polymer and improving its crystallinity and hole mobility. Compared to simple linear derivatives, α-branching in the alkyl groups of trialkylsilyl side chains causes strong aggregation and excessive phase separation in the photoactive layer, leading to poor device performance. β-Branching of the alkyl groups has not yet been used in trialkylsilyl side chains. Herein, we describe a new polymer (J77) with triisobutylsilyl side chains to investigate the effect of β-branching on the molecular aggregation, optical properties, energy levels, and photovoltaic properties. We find that compared to α-branching, β-branching of alkyl groups in trialkylsilyl side chains significantly reduces aggregation. This enables J77 to form blend morphologies in films that provide high-efficient solar cells in combination with different non-fullerene acceptors. Moreover β-branching of the alkyl groups in trialkylsilyl side chains lowers the HOMO energy level of J77 and increases the open-circuit voltage of J77-based solar cells without sacrificing short-circuit current density or fill factor.

Doped Metal Oxide Nanocrystals for Solution-Processed Hole Extraction Layers in High Efficient Organic Solar Cells

2018 ◽  
Author(s):  
Riva Alkarsifi ◽  
Florent Pourcin ◽  
Pavlo Perkhun ◽  
Mats Fahlman ◽  
Christine Videlot-Ackermann ◽  
...  
Keyword(s):  
Solar Cells ◽  
Metal Oxide ◽  
Organic Solar Cells ◽  
Solution Processed ◽  
High Efficient

High efficient in air printed thick-film organic solar cells from non-halogenated solvents

2021 ◽  
Author(s):  
Pavlo Perkhun ◽  
Jörg Ackermann ◽  
Anass Khodr ◽  
Hasan Alkhatib ◽  
Sadok Ben Dkhil ◽  
...  
Keyword(s):  
Solar Cells ◽  
Thick Film ◽  
Organic Solar Cells ◽  
High Efficient ◽  
Halogenated Solvents

Polythiophenes with Carbazole Side Chains: Design, Synthesis and Their Application in Organic Solar Cells

2010 ◽  
Vol 211 (8) ◽  
pp. 948-955 ◽  
Author(s):  
Weiwei Li ◽  
Yang Han ◽  
Yulan Chen ◽  
Cuihong Li ◽  
Bingsong Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Side Chains ◽  
Design Synthesis

Molecular engineering of non-fullerene acceptors based on thiophene-fused end groups for fullerene-free organic solar cells

2021 ◽  
pp. 109987
Author(s):  
Soyeong Jeong ◽  
Hwanil Je ◽  
Ji Hyun Lee ◽  
Seung Hun Lee ◽  
Soo-Young Jang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Molecular Engineering ◽  
End Groups
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