Application of Hole-Transporting Materials as the Interlayer in Graphene Oxide/Single-Wall Carbon Nanotube Silicon Heterojunction Solar Cells

Yu, LePing; Grace, Tom; Pham, Hong Duc; Batmunkh, Munkhbayar; Dadkhah, Mahnaz; Shearer, Cameron J.; Sonar, Prashant; Shapter, Joe

doi:10.1071/ch17380

Cited by 7 publications

(7 citation statements)

References 62 publications

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“…In addition to investigations into the effect of an interfacial silicon oxide layer, several studies have looked into the effect of a variety of organic polymer interlayers between the nanotubes and the silicon, as well as mixed in with the nanotubes in the film . These include polyaniline, poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), 4,40‐(naphthalene‐2,6‐diyl)bis( N , N ‐bis(4‐methoxyphenyl)aniline) (NAP), (E)‐40,4000‐(ethene‐1,2‐diyl)bis( N , N ‐bis(4‐methoxyphenyl)‐[100,1000‐biphenyl]‐4‐amine) (BPV), and 2,20,7,70‐tetrakis( N ,N0‐di‐ p ‐methoxyphenylamine)‐9,90‐spirobifluorene (spiro‐OMeTAD).…”

Section: Improving Performancementioning

confidence: 99%

Advances in Carbon Nanotube–Silicon Heterojunction Solar Cells

Tune

Flavel

2018

Advanced Energy Materials

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in this field as represented in Figure 2 and is broadly divided into two halves. The first half presents some essential background information on carbon nanotubes, particularly in relevance to their role in these kinds of solar cells, as well as a consideration of aspects such as thin film properties, device stability, scale-up, and operating mechanism, while the second half deals with the factors involved in improving performance.This review has been constrained almost exclusively to covering developments in the field of carbon nanotubes interfaced with monocrystalline silicon, though the field is also informed by other work being done in the associated areas of graphene-silicon and conducting polymer-silicon solar cells, as well as the use of nanotube films interfaced with polycrystalline silicon and other semiconductors, perovskites, organic photovoltaics, and more. This is partly in the interests of being able to provide a useful and informative level of technical detail while keeping the work to a manageable and digestible size both for those already working in the field and those new to it. It is also because although there are many parallels between, for example, the nanotube-silicon and polymer-silicon or graphene-silicon works, there are several important and fundamental differences, not the least of which may be the potential complexity/diversity of the operating mechanism(s) in the nanotube-silicon case. For information on these and other related types of photovoltaic device architectures incorporating carbon nanotubes, we refer the reader to Zielke et al., [49] Wang et al., [50] and Arnold et al., [51] as well as Li et al. [52] which also includes an overview of the carbon nanotube-silicon architecture as a part of the broader carbon-silicon theme. Table S1 of the Supporting Information provides a detailed and comprehensive list of published works in the carbon nanotube-silicon field along with various performance measurements, device structure parameters, and material properties. BackgroundAlthough once an exotic, poorly understood, and difficult to obtain material, carbon nanotubes are now relatively well known, well understood, and widely available from commercial suppliers. Briefly, single-walled carbon nanotubes (SWCNT) are very high aspect ratio cylinders of graphene in which the Heterojunctions of carbon nanotubes interfaced with silicon respond to light illumination and can be operated in the power regime as solar cells. Very significant advances have been made in the last 5 years both in terms of headline performance values and in fundamental understanding of the underlying operating principles, as well as the sophistication of the devices and studies being reported. The body of literature is growing rapidly, and the latest power conversion efficiency and active area records have now reached over 17% and 2 cm 2 , respectively. Thus, the authors believe that it is now a useful time for an evaluation of the current state-of-the-art and challenges going forward, as well as for a comprehensively ...

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Section: Improving Performancementioning

confidence: 99%

Advances in Carbon Nanotube–Silicon Heterojunction Solar Cells

Tune

Flavel

2018

Advanced Energy Materials

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“…CNT suspensions were prepared using previously published approaches [37][38][39]. A surfactant solution was formed by adding Triton X-100 to water at a concentration of 1% v/v.…”

Section: Methodsmentioning

confidence: 99%

The Use of Gravity Filtration of Carbon Nanotubes from Suspension to Produce Films with Low Roughness for Carbon Nanotube/Silicon Heterojunction Solar Device Application

et al. 2020

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The morphology of carbon nanotube (CNT) films is an important factor in the performance of CNT/silicon (CNT/Si) heterojunction solar devices. Films have generally been prepared via vacuum filtration from aqueous suspensions. Whilst this enables strong films to be formed quickly, they are highly disordered on the micron scale, with many charge traps and gaps forming in the films. It has been previously established that lowering the filtration speed enables more ordered films to be formed. The use of slow gravity filtration to improve the morphology of CNT films used in the CNT/Si device is reported here. It was found that slow filtration causes significant macroscale inhomogeneity in the CNT films, with concentrated thick regions, surrounded by larger thinner areas. By using atomic force microscopy (AFM), scanning electron microscopy (SEM), and polarised Raman spectroscopy, it was determined that there was no large improvement in directional organisation of the CNTs on the microscale. However, the films were found to be much smoother on the microscale, with arithmetic and root mean square average height deviation values roughly 3 times lower for slow-filtered films compared to fast-filtered films. A comparison was performed with CNT-Si solar cells fabricated with both slow and fast-filtered single-walled CNTs (SWCNT) films. It was found that slow filtration can produce similar photovoltaic results with thinner films. The results demonstrate that film morphology, even without improved CNT alignment, can lead to significant improvement in device performance in some applications. However, slow filtration did not form films of uniform light transmittance over an extended area, causing an increase in the variation in performance between individual devices compared to fast-filtered films.

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“…Similar hole transporting materials have been applied to small area CNT/Si heterojunction devices [10]. These materials are 4,4 -(naphthalene-2,6-diyl)bis(N,N-bis(4-methoxyphenyl)aniline) (NAP), and (E)-4 ,4"'-etene-1,2-diyl)bis(N,N-bis(4-methoxyphenyl)-[1",1"'biphenyl]-4-amine) (BPV).…”

Section: Introductionmentioning

confidence: 99%

Application of A Novel, Non-Doped, Organic Hole-Transport Layer into Single-Walled Carbon Nanotube/Silicon Heterojunction Solar Cells

et al. 2019

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The search for novel solar cell designs as an alternative to standard silicon solar cells is important for the future of renewable energy production. One such alternative design is the carbon nanotube/silicon (CNT/Si) heterojunction solar device. In order to improve the performance of large area CNT/Si heterojunction solar cells, a novel organic material, 4,10-bis(bis(4-methoxyphenyl)amino)naptho[7,8,1,2,3-nopqr]tetraphene-6,12-dione (DPA-ANT-DPA (shortened to DAD)), was added as an interlayer between the CNT film and the silicon surface. The interlayer was examined with SEM and AFM imaging to determine an optimal thickness for solar cell performance. The DAD was shown to improve the device performance with the efficiency of large area devices improving from 2.89% ± 0.40% to 3.34% ± 0.10%.

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Application of Hole-Transporting Materials as the Interlayer in Graphene Oxide/Single-Wall Carbon Nanotube Silicon Heterojunction Solar Cells

Cited by 7 publications

References 62 publications

Advances in Carbon Nanotube–Silicon Heterojunction Solar Cells

Advances in Carbon Nanotube–Silicon Heterojunction Solar Cells

The Use of Gravity Filtration of Carbon Nanotubes from Suspension to Produce Films with Low Roughness for Carbon Nanotube/Silicon Heterojunction Solar Device Application

Application of A Novel, Non-Doped, Organic Hole-Transport Layer into Single-Walled Carbon Nanotube/Silicon Heterojunction Solar Cells

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