Carbon nanotube–polybithiophene photovoltaic devices with high open‐circuit voltage

Patyk, Rodolfo L.; Lomba, Bruno S.; Nogueira, Ana F.; Furtado, Clascídia Aparecida; Santos, Adelina P.; Mello, Rosâne; Micaroni, Liliana; Hümmelgen, Ivo A.

doi:10.1002/pssr.200600057

Cited by 37 publications

(28 citation statements)

References 18 publications

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“…On the other hand, Amaratunga et al replaced fullerene derivatives with SWNTs in bulk-heterojunction devices, which acted as an acceptor and transported electrons by providing paths of percolation. [7] Similar studies were undertaken by other groups but most of the results show a very low power efficiency of the cells, [8] except for the work of Patyk et al [9] who demonstrate devices with a power conversion efficiency (PCE) of 1.48 % but under 15.5 W m -2 . With the view to increase the efficient charge separation at the polymer/C 60 interface and the efficient electron transport through SWNTs, fullerene-functionalized SWNTs have been synthesized and incorporated into organic photovoltaic (OPV) devices.…”

Section: Introductionsupporting

confidence: 62%

Elaboration of P3HT/CNT/PCBM Composites for Organic Photovoltaic Cells

Berson

Bettignies

Bailly

et al. 2007

Adv Funct Materials

255

185

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This Full Paper focuses on the preparation of single‐walled or multi‐walled carbon nanotube solutions with regioregular poly(3‐hexylthiophene) (P3HT) and a fullerene derivative 1‐(3‐methoxycarbonyl) propyl‐1‐phenyl[6,6]C61 (PCBM) using a high dissolution and concentration method to exactly control the ratio of carbon nanotubes (CNTs) to the P3HT/PCBM mixture and disperse the CNTs homogeneously throughout the matrix. The CNT/P3HT/PCBM composites are deposed using a spin‐coating technique and characterized by absorption and fluorescence spectroscopy and by atomic force microscopy to underline the structure and the charge transfer between the CNTs and P3HT. The performance of photovoltaic devices obtained using these composites as a photoactive layer mainly show an increase of the short circuit current and a slight decrease of the open circuit voltage which generally leads to an improvement of the solar cell performances to an optimum CNT percentage. The best results are obtained with a P3HT/PCBM (1 : 1) mixture with 0.1 wt % multi‐walled carbon nanotubes with an open circuit voltage (Voc) of 0.57 V, a current density at the short‐circuit (Isc) of 9.3 mA cm–2 and a fill factor of 38.4 %, which leads to a power conversion efficiency of 2.0 % (irradiance of 100 mW cm–2 spectroscopically distributed following AM1.5).

show abstract

Section: Introductionsupporting

confidence: 62%

Elaboration of P3HT/CNT/PCBM Composites for Organic Photovoltaic Cells

Berson

Bettignies

Bailly

et al. 2007

Adv Funct Materials

255

185

View full text Add to dashboard Cite

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“…A remarkably large open circuit voltage was recently observed by Patyk et al for P3OT:SWNT blends prepared on top of an electrochemically deposited polybithiophene layer [328]. Beforehand the SWNTs were modified by 2-(2-thienyl)ethanol groups.…”

Section: Carbon Nanotubes In Polymer Solar Cellsmentioning

confidence: 94%

Polymer Solar Cells

Hoppe

Sariciftci

2007

Photoresponsive Polymers II

124

121

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“…[11,18,19,24,25] The ability of nanotubes to respond upon photochemical excitation is one of their most useful properties and may lead to their development for a large variety of applications, for example, as sensors, relays, and photovoltaic and electroluminescent devices. [8,9,[26][27][28][29][30][31][32][33][34][35][36][37][38] The functionalisation of sSWNTs has emerged as a line of research parallel to that developed in the 1990s…”

Section: Introductionmentioning

confidence: 98%

Functional Macromolecules from Single‐Walled Carbon Nanotubes: Synthesis and Photophysical Properties of Short Single‐Walled Carbon Nanotubes Functionalised with 9,10‐Diphenylanthracene

Aprile

Martín

Álvaro

et al. 2008

Chemistry A European J

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9,10-Diphenylanthracene (DPA), a well-studied organic chromophore (Phi(fl) = 0.98) that exhibits electroluminescence, has been covalently bound through 2-(ethylthio)ethylamido linkers to the carboxylic acid groups of short, soluble single-walled carbon nanotubes (sSWNTs) of 1 microm average length, and the resulting DPA-functionalised sSWNT (DPA- sSWNT) macromolecular adducts (4.6 wt % DPA content) characterised by solution (1)H NMR, Raman and IR spectroscopy and thermogravimetric analysis. Comparison of the quenching of DPA fluorescence (steady-state and time-resolved) and of the transient optical spectra of sSWNTs and DPA-sSWNTs show that the covalent linkage boosts the interaction between the DPA and the sSWNT units. DPA-sSWNTs exhibit emission in the near-IR region from 1100-1400 nm with an enhanced quantum yield (Phi = 5.7x10(-3)) compared with sSWNTs (Phi = 3.9x10(-3)).

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Carbon nanotube–polybithiophene photovoltaic devices with high open‐circuit voltage

Cited by 37 publications

References 18 publications

Elaboration of P3HT/CNT/PCBM Composites for Organic Photovoltaic Cells

Elaboration of P3HT/CNT/PCBM Composites for Organic Photovoltaic Cells

Polymer Solar Cells

Functional Macromolecules from Single‐Walled Carbon Nanotubes: Synthesis and Photophysical Properties of Short Single‐Walled Carbon Nanotubes Functionalised with 9,10‐Diphenylanthracene

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