A strong regioregularity effect in self-organizing conjugated polymer films and high-efficiency polythiophene:fullerene solar cells

2006 ◽  
Vol 5 (3) ◽  
pp. 197-203 ◽  
Author(s):  
Youngkyoo Kim ◽  
Steffan Cook ◽  
Sachetan M. Tuladhar ◽  
Stelios A. Choulis ◽  
Jenny Nelson ◽  
...  
Keyword(s):  
Solar Cells ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
High Efficiency ◽  
Self Organizing

A strong regioregularity effect in self-organizing conjugated polymer films and high-efficiency polythiophene: fullerene solar cells

2010 ◽  
pp. 63-69 ◽  
Author(s):  
YOUNGKYOO KIM ◽  
STEFFAN COOK ◽  
SACHETAN M. TULADHAR ◽  
STELIOS A. CHOULIS ◽  
JENNY NELSON ◽  
...  
Keyword(s):  
Solar Cells ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
High Efficiency ◽  
Self Organizing

Morphologies of Self-Organizing Regioregular Conjugated Polymer/Fullerene Aggregates in Thin Film Solar Cells

2010 ◽  
Vol 43 (1) ◽  
pp. 428-432 ◽  
Author(s):  
Mao-Yuan Chiu ◽  
U-Ser Jeng ◽  
Ming-Shin Su ◽  
Kung-Hwa Wei
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Conjugated Polymer ◽  
Thin Film Solar Cells ◽  
Self Organizing

scholarly journals Templated Growth of Fullerene C60 Crystals by Triptycene in  Polymer Blend Films

2021 ◽  
Author(s):  
◽  
Cole Ross Lomas
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Solar Cell ◽  
Polymer Film ◽  
Active Layer ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Electronic Devices ◽  
Fullerene C60 ◽  
Film Morphology

<p>Molecular semiconductors such as fullerene C60 have become ubiquitous components of organic electronic devices, owing to their electronic structure and favourable material processing properties. In most conjugated polymer-fullerene films that form the active layer in bulk heterojunction (BHJ) organic solar cells, organisation of the fullerene phases to the correct nanoscale dimensions for exciton charge separation and transportation to the device electrodes is driven by excess fullerene addition. While this approach can deliver acceptable film morphology for a BHJ solar cell, it is not optimal as the photoactive polymer component of the film becomes diluted by C60 thereby reducing device efficiency. This motivates a supramolecular approach as an alternative method to control fullerene assembly and give morphological control of conjugated polymer films. Triptycene (TPC) is a readily available molecule whose rigid paddle wheel structure and hydrophobicity present three excellent C60 binding cavities. Triptycene has the potential to template the macroscopic assembly of fullerene molecules within a polymer-fullerene blend film, thereby controlling phase separation without excess fullerene addition. In this project, the ability of TPC to template the assembly of C60 was investigated in single crystals, polymer films, and in functional electronic devices. Blue-shifted fluorescence from TPC·C60 co-crystals was used as a spectroscopic signature to probe the molecular environment of C60 dispersed through an optically transparent polystyrene polymer film, and confirm that TPC hosts C60 molecules within the polymer matrix. Ultraviolet-visible (UV-Vis) spectroscopy of the polystyrene:C60:TPC films confirmed a reduction in the orbital overlap between adjacent C60 molecules providing further evidence that TPC had spatially separated C60 molecules upon templating the macroscopic assembly. When TPC was added to conjugated polymer poly[2-methoxy-5-(2-ethyhexyloxy)-1,4-phenylene vinylene] (MEH-PPV) and MEHPPV: C60 films as a blend additive, fluorescence spectroscopy identified two unique effects: (1) the suppression of excimer states when TPC spatially separated the conjugated polymer chains, and (2) the assembly of C60 into larger domains to drive polymer and C60 phase separation, giving morphological control of the polymer film. The fabrication of polystyrene:C60:TPC sandwich devices showed the electronic conduction of C60 was unaltered by spatial separation and reduction in electronic coupling between neighbouring C60 molecules caused by TPC templation. MEHPPV: C60 BHJ solar cells suffered a loss in photocurent when TPC was added to the active layer when compared to fabricated devices that used excess fullerene addition to control film morphology. However, due to time constraints, only one polymer film composition was able to be tested. Since the polymer film morphology was shown to be sensitive to the molar ratios of C60 and TPC, there is immense potential to further investigate TPC as a blend additive in conjugated polymer films and optimise the film composition to obtain desirable morphology for a BHJ solar cell. The functionalisation of TPC could provide a method to further enhance interactions between TPC and C60 and provide greater control over C60 self-assembly within a polymer film.</p>

scholarly journals High efficiency conjugated polymer/Si hybrid solar cells with tetramethylammonium hydroxide treatment

RSC Advances ◽  
2017 ◽  
Vol 7 (2) ◽  
pp. 688-693 ◽  
Author(s):  
Xiaojuan Shen ◽  
Baogen Ma ◽  
Ling Chen ◽  
Jie Zhao
Keyword(s):  
Solar Cells ◽  
Conjugated Polymer ◽  
High Efficiency ◽  
Nanowire Array ◽  
Tetramethylammonium Hydroxide ◽  
Hybrid Solar Cells ◽  
Si Nanowire ◽  
Electroless Etching ◽  
Si Nanowire Array

Conjugated polymer/Si hybrid solar cells are fabricated based on a Si nanowire array (SiNW) substrate prepared by metal-assisted electroless etching.

High efficiency organic solar cells with spray coated active layers comprised of a low band gap conjugated polymer

2012 ◽  
Vol 100 (8) ◽  
pp. 083301 ◽  
Author(s):  
Wanyi Nie ◽  
Robert C. Coffin ◽  
Jiwen Liu ◽  
Yuan Li ◽  
Eric D. Peterson ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Organic Solar Cells ◽  
Conjugated Polymer ◽  
High Efficiency ◽  
Low Band Gap ◽  
Active Layers

scholarly journals Templated Growth of Fullerene C60 Crystals by Triptycene in  Polymer Blend Films

2021 ◽  
Author(s):  
◽  
Cole Ross Lomas
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Solar Cell ◽  
Polymer Film ◽  
Active Layer ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Electronic Devices ◽  
Fullerene C60 ◽  
Film Morphology

<p>Molecular semiconductors such as fullerene C60 have become ubiquitous components of organic electronic devices, owing to their electronic structure and favourable material processing properties. In most conjugated polymer-fullerene films that form the active layer in bulk heterojunction (BHJ) organic solar cells, organisation of the fullerene phases to the correct nanoscale dimensions for exciton charge separation and transportation to the device electrodes is driven by excess fullerene addition. While this approach can deliver acceptable film morphology for a BHJ solar cell, it is not optimal as the photoactive polymer component of the film becomes diluted by C60 thereby reducing device efficiency. This motivates a supramolecular approach as an alternative method to control fullerene assembly and give morphological control of conjugated polymer films. Triptycene (TPC) is a readily available molecule whose rigid paddle wheel structure and hydrophobicity present three excellent C60 binding cavities. Triptycene has the potential to template the macroscopic assembly of fullerene molecules within a polymer-fullerene blend film, thereby controlling phase separation without excess fullerene addition. In this project, the ability of TPC to template the assembly of C60 was investigated in single crystals, polymer films, and in functional electronic devices. Blue-shifted fluorescence from TPC·C60 co-crystals was used as a spectroscopic signature to probe the molecular environment of C60 dispersed through an optically transparent polystyrene polymer film, and confirm that TPC hosts C60 molecules within the polymer matrix. Ultraviolet-visible (UV-Vis) spectroscopy of the polystyrene:C60:TPC films confirmed a reduction in the orbital overlap between adjacent C60 molecules providing further evidence that TPC had spatially separated C60 molecules upon templating the macroscopic assembly. When TPC was added to conjugated polymer poly[2-methoxy-5-(2-ethyhexyloxy)-1,4-phenylene vinylene] (MEH-PPV) and MEHPPV: C60 films as a blend additive, fluorescence spectroscopy identified two unique effects: (1) the suppression of excimer states when TPC spatially separated the conjugated polymer chains, and (2) the assembly of C60 into larger domains to drive polymer and C60 phase separation, giving morphological control of the polymer film. The fabrication of polystyrene:C60:TPC sandwich devices showed the electronic conduction of C60 was unaltered by spatial separation and reduction in electronic coupling between neighbouring C60 molecules caused by TPC templation. MEHPPV: C60 BHJ solar cells suffered a loss in photocurent when TPC was added to the active layer when compared to fabricated devices that used excess fullerene addition to control film morphology. However, due to time constraints, only one polymer film composition was able to be tested. Since the polymer film morphology was shown to be sensitive to the molar ratios of C60 and TPC, there is immense potential to further investigate TPC as a blend additive in conjugated polymer films and optimise the film composition to obtain desirable morphology for a BHJ solar cell. The functionalisation of TPC could provide a method to further enhance interactions between TPC and C60 and provide greater control over C60 self-assembly within a polymer film.</p>

Designing Naphthyridinedione-Based Conjugated Polymer for Thickness-Tolerant High Efficiency Polymer Solar Cells

2021 ◽  
Author(s):  
Jun-Mo Park ◽  
Tack Ho Lee ◽  
Dong Won Kim ◽  
Jae Won Kim ◽  
Hae Yeon Chung ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Conjugated Polymer ◽  
High Efficiency ◽  
Polymer Solar Cells ◽  
Large Area ◽  
High Power Conversion Efficiency ◽  
Roll To Roll ◽  
High Absorption Coefficient ◽  
High Absorption

Conjugated polymers with a high absorption coefficient and high charge mobility are essential for high power conversion efficiency (PCE) and large area roll-to-roll processing of polymer solar cells. However, only...

High-efficiency perovskite quantum dot solar cells benefiting from a conjugated polymer-quantum dot bulk heterojunction connecting layer

2020 ◽  
Vol 8 (16) ◽  
pp. 8104-8112 ◽  
Author(s):  
Kang Ji ◽  
Jiabei Yuan ◽  
Fangchao Li ◽  
Yao Shi ◽  
Xufeng Ling ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Conjugated Polymer ◽  
High Efficiency ◽  
Bulk Heterojunction ◽  
Quantum Dot Solar Cells

Through constructing polymer-quantum dot bulk heterojunction interfaces, we reported efficient CsPbI3 and FAPbI3 perovskite quantum dot solar cells.

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