Nanostructured, Active Organic–Metal Junctions for Highly Efficient Charge Generation and Extraction in Polymer‐Fullerene Solar Cells

Pandey, Ajay K.; Aljada, Muhsen; Velusamy, Marappan; Burn, Paul L.; Meredith, Paul

doi:10.1002/adma.201103896

Cited by 41 publications

(41 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By comparing the results obtained with experimental measurements of similar structures, the calculated absorption and FF enhancement can be qualitatively validated 31–35 . For example, for similar structures to those studied here, it has been shown experimentally in ref.…”

Section: Resultsmentioning

confidence: 88%

“…In reality, however, several experimental and numerical studies show that even if the integration of nanoparticles or grating structures into the cells reduces the absorber volume, this introduction can still enhance the overall optical absorption efficiency and thus the cell’s J sc 29–31 . In order to shed light on this discrepancy, finally, we perform optical simulations for same geometries, and subsequently introduce spatially resolved exciton generation rates to our electrical simulator.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

The influence of electrical effects on device performance of organic solar cells with nano-structured electrodes

Mirsafaei

Fallahpour

Lugli

et al. 2017

Sci Rep

View full text Add to dashboard Cite

Integration of light-trapping features and exploitation of metal nanostructure plasmonic effects are promising approaches for enhancing the power conversion efficiency of organic solar cells. These approaches’ effects on the light absorption enhancement have been widely studied, especially in inorganic devices. While this light-trapping concept can be transferred to organic devices, one has to also consider nanostructure-induced electrical effects on the device performance, due to the fundamental difference in the organic semiconducting material properties compared to their inorganic counterparts. In this contribution, we exemplarily model the electrical properties of organic solar cells with rectangular-grating structures, as compared to planar reference devices. Based on our numeric results, we demonstrate that, beyond an optical absorption enhancement, the device fill factor improves significantly by introducing the grating structures. From the simulations we conclude that enhanced carrier collection efficiency is the main reason for the increased solar cell fill factor. This work contributes towards a more fundamental understanding of the effect of nanostructured electrodes on the electrical properties of organic solar cells.

show abstract

Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 99%

The influence of electrical effects on device performance of organic solar cells with nano-structured electrodes

Mirsafaei

Fallahpour

Lugli

et al. 2017

Sci Rep

View full text Add to dashboard Cite

show abstract

“…18,19 The formation of a tapered nanostructure profile is preferred. 13,25 The pillar structures, which is referred as the NS1 structure in this paper, has a 100 to 200 nm diameter and 100 nm depth (scanning electron microscopy (SEM) image, Figure 2a). The reflectance spectra of the Si substrates with nanostructured surfaces were measured by using a UV/visible/ NIR spectrophotometer with an integrating sphere for 300 to 1100 nm wavelengths.…”

Section: Resultsmentioning

confidence: 99%

Efficiency Enhancement of PEDOT:PSS/Si Hybrid Solar Cells by Using Nanostructured Radial Junction and Antireflective Surface

Chen

Con

et al. 2013

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

ABSTRACT:We demonstrate the implementation of a hybrid solar cell that comprises a surface nanostructured ntype Si and poly(3,4-ethylenedioxythiophene):poly-(styrenesulfonate). The Si surface before deposition of the organic layer was nanostructured by using CsCl self-assembled nanoparticles as a hard mask and dry etching to form radial junction architectures and enhance light diffusion and absorption. Apart from the textured Si surface, processing parameters such as from metal-electrode shadow ratio, spincoating rate, and surfactant addition were properly adjusted to improve overall cell performance. Our hybrid solar cells achieve the best performance under optimized cell parameters with a power conversion efficiency of 8.84% and short-circuit current density of 30.5 mA/cm 2 . This combined technique provides a simple, scalable, and cost-effective process for fabricating hybrid solar cells.

show abstract

“…Therefore, the incorporation of Au NPs in the BHJ active layer increases the interfacial contact area between the BHJ active layer and the Al cathode, which can in turn reduce the series resistance of the PSCs. [41,42] The shunt resistance, which refers to a loss in photocurrent due to carrier recombination within the device, particularly at the interfaces between each layer, was also influenced by the interfacial contact between the BHJ layer and Al cathode. [43] According to Table 1, the shunt resistance of device A was more than two times higher than the values obtained for device B and C. From Figure 3, it can be noted that the surface of the BHJ film in device A was rougher than that of the neat BHJ film but smoother than those of the other BHJ films with Au NPs.…”

Section: Shunt Resistance and Series Resistancementioning

confidence: 99%

Tailoring Dispersion and Aggregation of Au Nanoparticles in the BHJ Layer of Polymer Solar Cells: Plasmon Effects versus Electrical Effects

et al. 2014

View full text Add to dashboard Cite

Plasmonic effects that arise from embedding metallic nanoparticles (NPs) in polymer solar cells (PSCs) have been extensively studied. Many researchers have utilized metallic NPs in PSCs by either incorporating them into the PSC interlayers (e.g., the hole extraction and electron extraction layers) or blending them into the bulk heterojunction (BHJ) active layer. In such studies, the dispersity of the metallic NPs in each layer may vary due to both the different nature of the ligands and the amount of ligands on the metallic NPs. This in turn can produce different PSC performance parameters. Here, we systematically control the amount of attached organic ligands on Au NPs to control their dispersion behavior in the BHJ active layer of PSCs. By controlling the number of capping organic ligands on the Au NPs, the dispersity of the NPs in the BHJ layer is also controlled and the positive effects (particularly the plasmonic and electrical effects) of the Au NPs in the PSCs are investigated. From the obtained results, we find that the electrical contribution of the Au NPs is a more dominant factor for enhancing cell efficiency when compared to the plasmonic effect.

show abstract

Nanostructured, Active Organic–Metal Junctions for Highly Efficient Charge Generation and Extraction in Polymer‐Fullerene Solar Cells

Cited by 41 publications

References 34 publications

The influence of electrical effects on device performance of organic solar cells with nano-structured electrodes

The influence of electrical effects on device performance of organic solar cells with nano-structured electrodes

Efficiency Enhancement of PEDOT:PSS/Si Hybrid Solar Cells by Using Nanostructured Radial Junction and Antireflective Surface

Tailoring Dispersion and Aggregation of Au Nanoparticles in the BHJ Layer of Polymer Solar Cells: Plasmon Effects versus Electrical Effects

Contact Info

Product

Resources

About