scholarly journals Alkyl Side Chain Impact on the Charge Transport and Photovoltaic Properties of Benzodithiophene and Diketopyrrolopyrrole-Based Copolymers

2011 ◽  
Vol 115 (36) ◽  
pp. 18002-18009 ◽  
Author(s):  
Zhao Li ◽  
Yanguang Zhang ◽  
Sai-Wing Tsang ◽  
Xiaomei Du ◽  
Jiayun Zhou ◽  
...  
Keyword(s):  
Charge Transport ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Photovoltaic Properties

scholarly journals Effect of main and side chain chlorination on the photovoltaic properties of benzodithiophene-alt-benzotriazole polymers

2020 ◽  
Vol 8 (43) ◽  
pp. 15426-15435
Author(s):  
Haijun Bin ◽  
Indunil Angunawela ◽  
Ruijie Ma ◽  
Asritha Nallapaneni ◽  
Chenhui Zhu ◽  
...  
Keyword(s):  
Energy Level ◽  
Charge Transport ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Open Circuit Voltage ◽  
Power Conversion ◽  
Open Circuit ◽  
Side Chain ◽  
Photovoltaic Properties ◽  
Homo Energy Level

Introduction of chlorine in the conjugated side chains significantly improves open-circuit voltage and power conversion efficiency, benefiting from a lower HOMO energy level, well-balanced charge transport and superior nanoscale morphology.

Impact of the alkyl side chain position on the photovoltaic properties of solution-processable organic molecule donor materials

2016 ◽  
Vol 4 (30) ◽  
pp. 11747-11753 ◽  
Author(s):  
J. Zhang ◽  
X. W. Zhu ◽  
C. He ◽  
H. J. Bin ◽  
L. W. Xue ◽  
...  
Keyword(s):  
Organic Molecule ◽  
Side Chain ◽  
Side Chains ◽  
Alkyl Side Chain ◽  
Photovoltaic Properties ◽  
Alkyl Side Chains ◽  
Solution Processable ◽  
New Compounds

Two new compounds with alkyl side chains at different positions have a similar structure, but exhibit different photovoltaic properties.

Solution-processable small molecule semiconductors based on pyrene-fused bisimidazole and influence of alkyl side-chain on the charge transport

RSC Advances ◽  
2016 ◽  
Vol 6 (73) ◽  
pp. 69277-69281 ◽  
Author(s):  
Hui Wen ◽  
Xiaohui Gong ◽  
Pei Han ◽  
Baoping Lin ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Charge Transport ◽  
Small Molecule ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Semiconducting Properties ◽  
Solution Processable

Soluble small molecule semiconductors based on pyrene-fused biimidazole and side-chain effects on the semiconducting properties.

Tailoring the microstructure and charge transport in conjugated polymers by alkyl side-chain engineering

2016 ◽  
Vol 4 (2) ◽  
pp. 286-294 ◽  
Author(s):  
Sadiara Fall ◽  
Laure Biniek ◽  
Yaroslav Odarchenko ◽  
Denis V. Anokhin ◽  
Grégoire de Tournadre ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Charge Transport ◽  
Electronic Energy ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Transport Measurements ◽  
Energy Disorder

Transport measurements with in-situ XRD reveal low alkyl side-chain densities to induce an ordered helicoidal conformation with large electronic energy disorder.

scholarly journals Molecular Weight-Dependent Physical and Photovoltaic Properties of Poly(3-alkylthiophene)s with Butyl, Hexyl, and Octyl Side-Chains

Polymers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 3440
Author(s):  
Thanh-Danh Nguyen ◽  
Van-Hai Nguyen ◽  
Jongwoo Song ◽  
Jongdeok An ◽  
Ngoc-Thuan Truong ◽  
...  
Keyword(s):  
Chain Length ◽  
Acid Methyl Ester ◽  
Gel Permeation Chromatography ◽  
Fullerene Derivative ◽  
Quantum Yields ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Scanning Calorimetry ◽  
Photovoltaic Properties ◽  
Side Chain Length

A series of poly-3-alkylthiophenes (P3ATs) with butyl (P3BT), hexyl (P3HT), and octyl (P3OT) sidechains and well-defined molecular weights (MWs) were synthesized using Grignard metathesis polymerization. The MWs of P3HTs and P3OTs obtained via gel permeation chromatography agreed well with the calculated MWs ranging from approximately 10 to 70 kDa. Differential scanning calorimetry results showed that the crystalline melting temperature increased with increasing MWs and decreasing alkyl side-chain length, whereas the crystallinity of the P3ATs increased with the growth of MWs. An MW-dependent red shift was observed in the UV–Vis and photoluminiscence spectra of the P3ATs in solution, which might be a strong evidence for the extended effective conjugation occurring in polymers with longer chain lengths. The photoluminescence quantum yields of pristine films in all polymers were lower than those of the diluted solutions, whereas they were higher than those of the phenyl-C61-butyric acid methyl ester-blended films. The UV–Vis spectra of the films showed fine structures with pronounced red shifts, and the interchain interaction-induced features were weakly dependent on the MW but significantly dependent on the alkyl side-chain length. The photovoltaic device performances of the P3BT and P3HT samples significantly improved upon blending with a fullerene derivative and subsequent annealing, whereas those of P3OTs mostly degraded, particularly after annealing. The optimal power conversion efficiencies of P3BT, P3HT, and P3OT were 2.4%, 3.6%, and 1.5%, respectively, after annealing with MWs of ~11, ~39, and ~38 kDa, respectively.

Structural tuning of quinoxaline-benzodithiophene copolymers via alkyl side chain manipulation: synthesis, characterization and photovoltaic properties

2014 ◽  
Vol 2 (29) ◽  
pp. 11162-11170 ◽  
Author(s):  
Marta Tessarolo ◽  
Desta Gedefaw ◽  
Margherita Bolognesi ◽  
Fabiola Liscio ◽  
Patrik Henriksson ◽  
...  
Keyword(s):  
Side Chain ◽  
Alkyl Side Chain ◽  
Photovoltaic Properties

Effect of the alkyl side chain(s) on the optical, electronic, morphological and photovoltaic properties.

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