A comparative study on the morphology of P3HT:PCBM solar cells with the addition of Fe3O4 nanoparticles by spin and rod coating methods

Zhang, Wenluan; Nguyen, Ngoc A.; Murray, Roger K.; Xin, Jiyuan; Mackay, Michael E.

doi:10.1007/s11051-017-4016-2

Cited by 10 publications

(4 citation statements)

References 34 publications

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“…Despite considerable efforts made on the advance of classical P3HT/PCBM BHJ system, the device efficiencies are still limited to approximately 5%. − To overcome the issue of low PCEs, so-called low-bandgap polymers have been exploited to replace P3HT in the BHJ configuration, as they have a broad absorption spectrum to ensure effective light-harvesting till the near-infrared region and have a high charge carrier mobility to ensure efficient transport of charge carriers. − Also in the case of low-bandgap polymer blends, the morphology of the donor and acceptor blends is of capital importance for the OSC device performance. The domain size is considered to ideally match the diffusion length of photogenerated excitons, in which an efficient dissociation of excitons into free charge carriers occurs. − Although the highest PCE values have been realized with nonfullerene acceptors, ,, the use of fullerenes is still common in many research examples and will be of high value due to the existing investments in processing infrastructure in industry, which is optimized to fullerene-based BHJ devices.…”

Section: Introductionmentioning

confidence: 99%

Composition–Morphology Correlation in PTB7-Th/PC₇₁BM Blend Films for Organic Solar Cells

Song

Wang

Barabino

et al. 2018

ACS Appl. Mater. Interfaces

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From a morphological perspective, the understanding of the influence of the [6,6]-phenyl C71-butyric acid methyl ester (PC71BM) content on the morphology of the active layer is not complete in organic solar cells (OSCs) with bulk heterojunction (BHJ) configuration based on the low-bandgap polymer poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b;4,5-b′]dithiophene-2,6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno[3,4-b]thiophene-)-2-carboxylate-2-6-diyl] (PTB7-Th). In this work, we obtain the highest power conversion efficiency (PCE) of 10.5% for BHJ organic solar cells (OSCs) with a PTB7-Th/PC71BM weight ratio of 1:1.5. To understand the differences in PCEs caused by the PC71BM content, we investigate the morphology of PTB7-Th/PC71BM blend films in detail by determining the domain sizes, the polymer crystal structure, optical properties, and vertical composition as a function of the PC71BM concentration. The surface morphology is examined with atomic force microscopy, and the inner film morphology is probed with grazing incidence small-angle X-ray scattering. The PTB7-Th crystal structure is characterized with grazing incidence wide-angle X-ray scattering and UV/vis spectroscopy. X-ray reflectivity is employed to yield information about the film vertical composition. The results show that in PTB7-Th/PC71BM blend films, the increase of PC71BM content leads to an enhanced microphase separation and a decreased polymer crystallinity. Moreover, a high PC71BM concentration is found to decrease the polymer domain sizes and crystal sizes and to promote polymer conjugation length and formation of fullerene-rich and/or polymer-rich layers. The differences in photovoltaic performance are well explained by these findings.

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Section: Introductionmentioning

confidence: 99%

Composition–Morphology Correlation in PTB7-Th/PC₇₁BM Blend Films for Organic Solar Cells

Song

Wang

Barabino

et al. 2018

ACS Appl. Mater. Interfaces

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“…Despite being a less expensive technology, the loss of a large amount of solution makes this technique incompatible with the promising large-scale roll-toroll. 3,7,8,11,14,[45][46][47] Spin coating was used to form the donor G-P3HT in as mentioned the study 48 and the active layers P3HT:PCBM in the studies, 17,36,45,[49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65] P3HT:MIF in the study, 62 P3HS: PCBM in the study, 66 PTB7:PCBM in the study, 67 PTB7: PC 70 BM in the study, 68 PTB7:PC 71 BM and PTB7-Th: PC 71 BM in the study, 69 PBDB-T-SF:IT-4F in the study, 70 PBDB-T:PC 71 BM in the study, 71 PBDB-TSR:PC 71 BM in the study, 72 PBDB-T:ITC in the study, 73 PTB7-Th:PC 71 BM in the study, 74 P3HT:ICBA in the studies, 39,75-77 PTB7: PC 71 BM:P-GO in the study, 78 MEH-PPV:PCBM in the study, 79 ZnPc-TB:PTCBI in the study, 80 PEHBDT-DFDTBSe:PC 71 BM in the study, 75 PBDTTT-C:PCBM in the study, 81 PBDTT-F-TT:diPBI in the study, 82 PBDB-T: FH, PBDB-T:FM, PTB7-Th:NFBDT, and PTB7-Th:NOBDT in the study, 83 PSBTBT:PDI-DTT in the study, 84 PDBT-T1: SdiPBI-S in the study, 85 PBDT-8:PC 71 BM and PTIPSBDT-DFDTQX:PC 71 BM in the study 86…”

Section: Spin Coatingmentioning

confidence: 99%

“…However, this application method is not suitable for processing OPV modules for large areas at high rates, as it has some inherent limitations, such as the loss of a large amount of material during coating and limited control over the thickness of the film. Despite being a less expensive technology, the loss of a large amount of solution makes this technique incompatible with the promising large‐scale roll‐to‐roll 3,7,8,11,14,45‐47 …”

Section: Coating and Printing Techniques For Organic Photovoltaic Cellsmentioning

confidence: 99%

Overview of printing and coating techniques in the production of organic photovoltaic cells

et al. 2020

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The organic photovoltaic cell (OPV) is composed of multiple layers, and some printing and coating techniques are more suitable than others for a certain type of layer. This paper aims to characterize and compare the most relevant coating and printing techniques that can be used in the manufacture of OPVs. Extensive bibliographic research was carried out on articles published from 1998 to 2020 to identify various aspects OPV, such as the principle of operation, advantages, disadvantages, and which layers can be printed by each technique. The results show that the most used method for the processing of OPVs is spin-coating. In the studies found, rotation was used to coat the active layer, the electron transport layer, and the hole transport layer. The techniques of pad printing, casting, and meniscus are considered useful in the processing of the active layer. Regarding the deposition of the active layer, hole transport layer, electron transport layer, and anode, the rotogravure, crack matrix, spraying, and brushing techniques were satisfactory. Flexography has been used to form the active layer, electron transport layer, and anode. Screen printing, inkjet printing, and knife/blade coating were used in the processing of the active layer, hole transport layer, electron transport layer, anode, and cathode. All the double slot die coating, curtain coating, and slide coating allows simultaneous processing of multiple layers. Techniques compatible with roll-to-roll processing are more likely to be at the center of OPVs in the future, thus making solar photovoltaic technology more competitive.

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“…Doping of a BHJ with nanoparticles can increase the effective exciton lifetime and thus improve the power conversion efficiency [24,25,65,66]. Furthermore, in phosphorescent OLEDs, organometallic complexes are used to improve the efficiency.…”

Section: Phosphorescent Dopantsmentioning

confidence: 99%

Generalized Kinetic Monte Carlo Framework for Organic Electronics

et al. 2018

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Abstract:In this paper, we present our generalized kinetic Monte Carlo (kMC) framework for the simulation of organic semiconductors and electronic devices such as solar cells (OSCs) and light-emitting diodes (OLEDs). Our model generalizes the geometrical representation of the multifaceted properties of the organic material by the use of a non-cubic, generalized Voronoi tessellation and a model that connects sites to polymer chains. Herewith, we obtain a realistic model for both amorphous and crystalline domains of small molecules and polymers. Furthermore, we generalize the excitonic processes and include triplet exciton dynamics, which allows an enhanced investigation of OSCs and OLEDs. We outline the developed methods of our generalized kMC framework and give two exemplary studies of electrical and optical properties inside an organic semiconductor.

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A comparative study on the morphology of P3HT:PCBM solar cells with the addition of Fe3O4 nanoparticles by spin and rod coating methods

Cited by 10 publications

References 34 publications

Composition–Morphology Correlation in PTB7-Th/PC₇₁BM Blend Films for Organic Solar Cells

Composition–Morphology Correlation in PTB7-Th/PC₇₁BM Blend Films for Organic Solar Cells

Overview of printing and coating techniques in the production of organic photovoltaic cells

Generalized Kinetic Monte Carlo Framework for Organic Electronics

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A comparative study on the morphology of P3HT:PCBM solar cells with the addition of Fe3O4 nanoparticles by spin and rod coating methods

Cited by 10 publications

References 34 publications

Composition–Morphology Correlation in PTB7-Th/PC71BM Blend Films for Organic Solar Cells

Composition–Morphology Correlation in PTB7-Th/PC71BM Blend Films for Organic Solar Cells

Overview of printing and coating techniques in the production of organic photovoltaic cells

Generalized Kinetic Monte Carlo Framework for Organic Electronics

Contact Info

Product

Resources

About

Composition–Morphology Correlation in PTB7-Th/PC₇₁BM Blend Films for Organic Solar Cells

Composition–Morphology Correlation in PTB7-Th/PC₇₁BM Blend Films for Organic Solar Cells