scholarly journals Interfacial disorder in efficient polymer solar cells: the impact of donor molecular structure and solvent additives

2017 ◽  
Vol 5 (47) ◽  
pp. 24749-24757 ◽  
Author(s):  
Nakul Jain ◽  
Naresh Chandrasekaran ◽  
Aditya Sadhanala ◽  
Richard H. Friend ◽  
Christopher R. McNeill ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Solar Cells ◽  
Spectroscopic Study ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Highly Sensitive ◽  
Solvent Additive ◽  
The Impact

Highly sensitive spectroscopic study of interfacial disorder and its correlation with the solvent additive and the molecular structure of the donor in bulk heterojunction organic solar cells.

scholarly journals Conducting Polymers for Optoelectronic Devices and Organic Solar Cells: A Review

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2627 ◽  
Author(s):  
Ary R. Murad ◽  
Ahmed Iraqi ◽  
Shujahadeen B. Aziz ◽  
Sozan N. Abdullah ◽  
Mohamad A. Brza
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Conjugated Polymers ◽  
Molecular Orbital ◽  
Organic Solar Cells ◽  
Field Effect Transistors ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Single Layer ◽  
Organic Polymer

In this review paper, we present a comprehensive summary of the different organic solar cell (OSC) families. Pure and doped conjugated polymers are described. The band structure, electronic properties, and charge separation process in conjugated polymers are briefly described. Various techniques for the preparation of conjugated polymers are presented in detail. The applications of conductive polymers for organic light emitting diodes (OLEDs), organic field effect transistors (OFETs), and organic photovoltaics (OPVs) are explained thoroughly. The architecture of organic polymer solar cells including single layer, bilayer planar heterojunction, and bulk heterojunction (BHJ) are described. Moreover, designing conjugated polymers for photovoltaic applications and optimizations of highest occupied molecular orbital (HOMO)–lowest unoccupied molecular orbital (LUMO) energy levels are discussed. Principles of bulk heterojunction polymer solar cells are addressed. Finally, strategies for band gap tuning and characteristics of solar cell are presented. In this article, several processing parameters such as the choice of solvent(s) for spin casting film, thermal and solvent annealing, solvent additive, and blend composition that affect the nano-morphology of the photoactive layer are reviewed.

Surface and Interfacial Morphology of Bulk Heterojunction Layers in Organic Solar Cells with Solvent Additive

2019 ◽  
Vol 75 (7) ◽  
pp. 498-502
Author(s):  
Ajeong Kim ◽  
Jiho Lee ◽  
Jerome Carnis ◽  
Gukil An ◽  
Jinback Kang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Interfacial Morphology ◽  
Solvent Additive

Internal nanoscale architecture and charge carrier dynamics of wide bandgap non-fullerene bulk heterojunction active layers in organic solar cells

2020 ◽  
Vol 8 (44) ◽  
pp. 23628-23636
Author(s):  
Xinyu Jiang ◽  
Hongwon Kim ◽  
Peter S. Deimel ◽  
Wei Chen ◽  
Wei Cao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Wide Bandgap ◽  
Carrier Dynamics ◽  
Charge Carrier Dynamics ◽  
Active Layers ◽  
Solvent Additive

The nanoscale architecture of active layer based on wide bandgap non-fullerene solar cells exhibits pronounced influence by the solvent additive.

scholarly journals In Situ Studies of Solvent Additive Effects on the Morphology Development during Printing of Bulk Heterojunction Films for Organic Solar Cells

Small Methods ◽  
2020 ◽  
Vol 4 (9) ◽  
pp. 2000418 ◽  
Author(s):  
Dan Yang ◽  
Sebastian Grott ◽  
Xinyu Jiang ◽  
Kerstin S. Wienhold ◽  
Matthias Schwartzkopf ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Additive Effects ◽  
In Situ Studies ◽  
Solvent Additive ◽  
Morphology Development

scholarly journals Thiophene- and Carbazole-Substituted N-Methyl-Fulleropyrrolidine Acceptors in PffBT4T-2OD Based Solar Cells

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1267 ◽  
Author(s):  
Hugo Gaspar ◽  
Flávio Figueira ◽  
Karol Strutyński ◽  
Manuel Melle-Franco ◽  
Dzmitry Ivanou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Systematic Investigation ◽  
Force Microscopy ◽  
Energetic Disorder ◽  
Lowest Unoccupied Molecular Orbital ◽  
Device Properties ◽  
The Impact

The impact of fullerene side chain functionalization with thiophene and carbazole groups on the device properties of bulk-heterojunction polymer:fullerene solar cells is discussed through a systematic investigation of material blends consisting of the conjugated polymer poly[(5,6-difluoro-2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3‴-di(2-octyldodecyl)-2,2′;5′,2″;5″,2‴-quaterthiophen-5,5‴-diyl)] (PffBT4T-2OD) as donor and C60 or C70 fulleropyrrolidines as acceptors. The photovoltaic performance clearly depended on the molecular structure of the fulleropyrrolidine substituents although no direct correlation with the surface morphology of the photoactive layer, as determined by atomic force microscopy, could be established. Although some fulleropyrrolidines possess favorable lowest unoccupied molecular orbital levels, when compared to the standard PC71BM, they originated OPV cells with inferior efficiencies than PC71BM-based reference cells. Fulleropyrrolidines based on C60 produced, in general, better devices than those based on C70, and we attribute this observation to the detrimental effect of the structural and energetic disorder that is present in the regioisomer mixtures of C70-based fullerenes, but absent in the C60-based fullerenes. These results provide new additional knowledge on the effect of the fullerene functionalization on the efficiency of organic solar cells.

Small molecule carbazole-based diketopyrrolopyrroles with tetracyanobutadiene acceptor unit as a non-fullerene acceptor for bulk heterojunction organic solar cells

2017 ◽  
Vol 5 (7) ◽  
pp. 3311-3319 ◽  
Author(s):  
Yuvraj Patil ◽  
Rajneesh Misra ◽  
M. L. Keshtov ◽  
Ganesh D. Sharma
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Conjugated Polymer ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Photovoltaic Properties ◽  
Highly Efficient

Herein, we investigated the photovoltaic properties of carbazole-based diketopyrrolopyrroles with tetracyanobutadiene acceptor units as highly efficient non-fullerene acceptors together with a D–A conjugated polymer, P, as a donor for polymer solar cells.

scholarly journals The Crystallinity Control of Polymer Donor Materials for High-Performance Organic Solar Cells

2020 ◽  
Vol 8 ◽  
Author(s):  
Dingding Qiu ◽  
Muhammad Abdullah Adil ◽  
Kun Lu ◽  
Zhixiang Wei
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Large Scale ◽  
Bulk Heterojunction ◽  
Film Formation ◽  
Polymer Solar Cells ◽  
Material Design ◽  
Device Fabrication ◽  
Device Properties

Bulk heterojunction (BHJ) organic solar cells (OSCs) can be regarded as one of the most promising energy generation technologies for large-scale applications. Despite their several well-known drawbacks, the devices where polymers are employed as the donor are still leading the OSC universe in terms of performance. Such performance generally depends upon various critical factors such as the crystallinity of the material, the crystallization process during the film formation, and also the final film morphology. Despite a few reviews on the structure of the polymer donor materials and device performance, not enough attention has been paid toward the crystallinity problem. Herein, the structure and crystallinity of the representative polymer donor materials and the corresponding device properties have been briefly reviewed. Furthermore, several typical methods for controlling the crystallinity of materials have been summarized and illustrated as well. Moreover, the obstacles lying in the way of successful commercialization of such polymer solar cells have been systematically discussed. The in-depth interpretation of the crystallinity of the polymer donors in this article may stimulate novel ideas in material design and device fabrication.

scholarly journals Improving Polymer Based Photovoltaic Devices by Reducing the Voltage Loss at the Donor-Acceptor Interface

2006 ◽  
Vol 974 ◽  
Author(s):  
Date J. D. Moet ◽  
Lenneke H. Slooff ◽  
Jan M. Kroon ◽  
Svetlana S. Chevtchenko ◽  
Joachim Loos ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Fullerene Derivative ◽  
Photovoltaic Devices ◽  
Alternating Copolymer ◽  
Voltage Loss ◽  
Donor Acceptor

ABSTRACTThis paper discusses the characterization and optimization of organic solar cells based on a bulk heterojunction consisting of an alternating copolymer, containing a fluorene and a benzathiadiazole unit with two neighboring thiophene rings, and a fullerene derivative (PCBM). The resulting power conversion efficiency amounts 3.9±0.2 % (AM1.5, 100 mW/cm2) and these polymer solar cells are therefore considered auspicious for further research.

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