Enhanced nonlinear absorption and optical limiting in semiconducting polymer/methanofullerene charge transfer films

Cha, Myoungsik; Sariciftci, Niyazi Serdar; Heeger, Alan J.; Hummelen, Jan C.; Wudl, Fred

doi:10.1063/1.115294

Cited by 103 publications

(49 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many practical applications, however, require solid-film type optical limiters. The NLO effects of pure C 60 films [163], C 60 blended in MEH-PPV thin films [214,215], C 60 mixed with PMMA films or sol-gel glasses [216±218], and C 60 covalently attached polystyrene (PS) chains (section`C 60 -containing polymers') in the solid state [219] have thus been investigated and compared with corresponding solution properties. While a higher threshold for optical limiting was observed for C 60 in the poly(methylmethacrylate) (PMMA) film than in the toluene solution [216±218], the optical-limiting effect of the polystyrene-bound C 60 film was found to be higher than a C 60 solution by a factor of 5 [219].…”

Section: à2mentioning

confidence: 99%

Advanced syntheses and microfabrications of conjugated polymers, C60-containing polymers and carbon nanotubes for optoelectronic applications

Dai

1999

Polym. Adv. Technol.

View full text Add to dashboard Cite

Section: à2mentioning

confidence: 99%

Advanced syntheses and microfabrications of conjugated polymers, C60-containing polymers and carbon nanotubes for optoelectronic applications

Dai

1999

Polym. Adv. Technol.

View full text Add to dashboard Cite

“…[1][2][3][4][5][6][7][8][9][10][11][12] The possibility of utilizing this effect for photovoltaic energy conversion, 5,8,[13][14][15][16][17] as well as for nonlinear optical devices such as optical limiters and transient holographic systems, has been demonstrated. [18][19][20][21] The photoinduced forward electron transfer occurs within a picosecond time scale 22,23 and the charge-separated state is long lived ͑milliseconds at 80 K͒.…”

Section: Introductionmentioning

confidence: 99%

Photoinduced charge carriers in conjugated polymer–fullerene composites studied with light-induced electron-spin resonance

et al. 1999

Self Cite

View full text Add to dashboard Cite

Photoinduced charge carriers in conjugated polymer-fullerene composites studied with lightinduced electron-spin resonance Dyakonov, V.; Zoriniants, G.; Scharber, M.C.; Brabec, C.J.; Janssen, R.A.J.; Hummelen, Jan Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. Detailed studies on photoinduced spins in conjugated polymer/fullerene composites using ͑cw͒ light-induced electron-spin-resonance ͑LESR͒ technique are reported. Two overlapping LESR lines are observed, from positive polarons on the polymer chains and negative charges on the fullerene moieties. Microwave power saturation studies show different relaxation times for these two spins, ruling out spin-exchange correlations, giving clear evidence of independent spins. The unusually high relaxation rate of the fullerene monoanionic spins is of intrinsic origin, and discussed in terms of a splitting of the T 1u level by a Jahn-Teller-type distortion as proposed in the literature. Further, we observed two distinct contributions to LESR signals: a prompt one and a persistent one. The excitation light intensity dependence of the prompt contributions into the P ϩ and C 60 Ϫ ESR signals is of bimolecular type (I 0.5

show abstract

“…Cha et al has reported enhanced nonlinear absorption and optical limiting in a solid film of poly(3 octylthiophene) (P3OT) sensitized with methanofullerene. The large nonlinearity is reported resulting from efficient photoinduced intermolecular charge transfer from P3OT to methanofullerene followed by absorption in the charge separated excited state [29]. The confirmation of this mechanism and the corresponding quantitative analysis has to be made by transient photoinduced absorption measurements, which is currently ongoing.…”

Section: Resultsmentioning

confidence: 99%

Nonlinear optical properties of carbon nanotube hybrids in polymer dispersions

Wang

Liao

Früchtl

et al. 2012

Materials Chemistry and Physics

View full text Add to dashboard Cite

A series of double walled carbon nanotubes (DWNTs) and multi walled nanotubes (MWNTs) functionalized with selected organic chromophores, fluorescein 5(6) isothiocyanate (FITC), rhodamine B isothiocyanate (RITC) and fullerene (C 60 ) were synthesized by covalently linking these electron donor groups to the metallic nanotubes. These versatile carbon nanotube composites show remarkable nonlinear optical (NLO) performance, due to a merged effect of the complementary NLO characteristics of the moieties of the composites. The hybrids were characterized by UV Vis spectroscopy and Raman spectroscopy. Evidence suggests charge transfer species are formed between the chromophores and the nanotubes. The optical limiting performance of the DWNT, MWNT hybrids and carbon NanoBuds is found to be superior to that of single walled nanotubes. Thermally induced light scattering from nanotube moieties is the primary mechanism dominating the NLO response. Reverse saturable absorption from fullerene moieties makes a significant contribution to the NLO response of fullerene containing hybrids and NanoBuds. Photoinduced charge transfer from the fullerenes or the organic chromophores (FITC and RITC) to nanotubes followed by absorption in the charge separated excited state may enhance the nonlinear absorption, thus an effective optical limiting response.

show abstract

Enhanced nonlinear absorption and optical limiting in semiconducting polymer/methanofullerene charge transfer films

Abstract: Enhanced nonlinear absorption and optical limiting in semiconducting polymer methanofullerene charge transfer films Cha, M.; Sariciftci, N. S.; Heeger, A. J.; Hummelen, J. C.; Wudl, F.

Cited by 103 publications

References 19 publications

Advanced syntheses and microfabrications of conjugated polymers, C60-containing polymers and carbon nanotubes for optoelectronic applications

Advanced syntheses and microfabrications of conjugated polymers, C60-containing polymers and carbon nanotubes for optoelectronic applications

Photoinduced charge carriers in conjugated polymer–fullerene composites studied with light-induced electron-spin resonance

Nonlinear optical properties of carbon nanotube hybrids in polymer dispersions

Contact Info

Product

Resources

About