Vertically Oriented Carbon Nanostructures and Their Application Potential for Polymer-Based Solar Cells

Borchert, Holger; Witt, F.; Chanaewa, Alina; Werner, Fabian; Dorn, Jan; Dufaux, Thomas; Kruszyńska, Marta; Jandke, Anne; Höltig, Michael; Alfere, Tamara; Böttcher, Jens; Gimmler, Christoph; Klinke, Christian; Burghard, Marko; Mews, Alf; Weller, Horst; Parisi, J.

doi:10.1021/jp2095592

Cited by 15 publications

(10 citation statements)

References 33 publications

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“…[75]) using ITO as the substrate for the vertically growth of CNTs. Growth of CNTs at temperatures around 500°C and at pressures ~20 mbar on ITO has been reported [75] using PECVD.…”

Section: Figure 1 A) Schematic Images Of the Cnts With Different Strmentioning

confidence: 99%

“…[75]) using ITO as the substrate for the vertically growth of CNTs. Growth of CNTs at temperatures around 500°C and at pressures ~20 mbar on ITO has been reported [75] using PECVD. This system resembles as a parallel plate radio frequency (RF) at 13.56 MHz capacitively coupled plasma (CCP) with C 2 H 2 as carbon source, H 2 /Ar as dilution medium and a heatable stage acting both as counter electrode and substrate…”

Section: Figure 1 A) Schematic Images Of the Cnts With Different Strmentioning

confidence: 99%

“…Low cost substrates including aluminium and stainless steel can also be used for the vertical CNT growth when the electrode is used as back electrode in solar cell design [75].…”

Section: Figure 1 A) Schematic Images Of the Cnts With Different Strmentioning

confidence: 99%

See 2 more Smart Citations

Carbon nanotubes for organic/inorganic hybrid solar cells

Arici

Karazhanov

2016

Materials Science in Semiconductor Processing

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“…[75]) using ITO as the substrate for the vertically growth of CNTs. Growth of CNTs at temperatures around 500°C and at pressures ~20 mbar on ITO has been reported [75] using PECVD.…”

Section: Figure 1 A) Schematic Images Of the Cnts With Different Strmentioning

confidence: 99%

Section: Figure 1 A) Schematic Images Of the Cnts With Different Strmentioning

confidence: 99%

See 1 more Smart Citation

Carbon nanotubes for organic/inorganic hybrid solar cells

Arici

Karazhanov

2016

Materials Science in Semiconductor Processing

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“…Also it has been shown already that vertically oriented graphene layers, so-called few-layer graphene (FLG) sheets with a thickness <1-5 nm or carbon nanowalls (CNWs) with a larger thickness of >5 nm, can be synthesized on substrates. The maze-like structure of the conducting carbon nanosheets or -walls leads to a large surfaceto-volume ratio what makes them a promising support material for electrochemical applications, such as fuel cells [6][7][8], super capacitors [9,10], lithium-ion batteries [11,12], field emitters [13] and solar cells [14][15][16]. The exact shape and the physical properties of these graphene-like nanostructures are strongly depending on the synthesis conditions and on the quality of the substrates used [17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Carbon Nanowalls and Few-Layer Graphene Sheets on Transparent Conductive Substrates

Höltig

Ruhmlieb

Strelow

et al. 2014

Zeitschrift Für Physikalische Chemie

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Abstract:We report on the growth of carbon nanowalls and few-layer graphene sheets on glass substrates coated with different transparent conductive oxides or gold. The growth is accomplished by a capacitively-coupled radio-frequency plasma-enhanced chemical vapor deposition setup with a gas mixture of C 2 H 2 , H 2 , and Ar or He. This system allows the synthesis of thin vertical carbon nanosheets without catalyst at mild reaction conditions due to the low plasma density, which is preferable for sensitive substrate materials. In fact, the electrical properties of the transparent conductive indium tin oxide and fluorinedoped tin oxide stay intact upon carbon growth. Carbon nanowalls and few-layer graphene sheets on transparent conductive oxides are promising candidates for solar-cell applications while these nanostructures on gold coated glass can act as catalyst support material.

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“…13,20,21 Most of the previous investigations have focused on randomly dispersing the CNTs within the active layer, whilst some studies have attempted building the bulk heterojunction using nanotube network as a skeleton, 22 and achieving an orderly array of nanotubes that had connectivity to one of the end electrodes. 23 These studies have demonstrated success in varying degrees, but, in general, the efficiency enhancements achieved by using CNTs with 13,20 or without 18,19,22 functionalization were limited. However, remarkable progress has been made by doping the nanotubes to be either n-type or p-type designating them to behave as either electron extractors or hole extractors.…”

mentioning

confidence: 99%

Incorporating semiconducting single-walled carbon nanotubes as efficient charge extractors in organic solar cells

Abeygunasekara

Hiralal

Samaranayake

et al. 2015

Applied Physics Letters

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We report on the improvement of power conversion efficiency (PCE) of PTB7/PC70BM solar cells by the addition of small quantities (0.02%–0.04%) of pristine single-walled carbon nanotubes (SWNTs) in the active-layer. SWNTs and purified semiconducting SWNTs (S-SWNTs) were added in quantities, which is 2 orders of magnitude lower than previously reported value and resulted in a reduction in the series resistance of the solar cell with minor changes on the shunt resistance. On addition of purified S-SWNT, the PCE of air measured devices enhanced by 29% from 4.9% to 6.3%, with short-circuit current density (Jsc) improving from 12.1 mA/cm2 to 14.4 mA/cm2 and a fill factor improvement from 54% to 61%. In addition, the role of processing additive N-Methyl-2-pyrrolidone, which acts as a SWNT dispersant, is also investigated. A single diode model of a solar cell is used to extract the cell parameters and understand the effect of SWNTs. Based on experimental data and it's fitting to the single diode model, we propose that S-SWNT improve the transport and extraction of photogenerated charges within the solar cell device.

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Vertically Oriented Carbon Nanostructures and Their Application Potential for Polymer-Based Solar Cells

Cited by 15 publications

References 33 publications

Carbon nanotubes for organic/inorganic hybrid solar cells

Carbon nanotubes for organic/inorganic hybrid solar cells

Synthesis of Carbon Nanowalls and Few-Layer Graphene Sheets on Transparent Conductive Substrates

Incorporating semiconducting single-walled carbon nanotubes as efficient charge extractors in organic solar cells

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