Flexible heterostructures based on metal phthalocyanines thin films obtained by MAPLE

Socol, Marcela; Preda, N.; Rasoga, Oana; Breazu, C.; Stavarache, Ionel; Stanculescu, Florin; Socol, G.; Gherendi, F.; Grumezescu, V.; Popescu-Pelin, Gianina; Gîrtan, Mihaela; Stefan, N.

doi:10.1016/j.apsusc.2015.10.166

Cited by 37 publications

(47 citation statements)

References 29 publications

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“…In this table, the C=C benzene stretch is represented by the band 1607 cm −1 , while the band observed at 1333 cm −1 is attributed to C=N in the macrocyclic ring. The signals from 1163 ± 1 cm −1 , 1084 ± 4 cm −1 , and 1117 ± 1 cm −1 were assigned to in-plane C-H bending, while the band from 1483 ± 1 cm −1 is given by the C-H bending in aryl [37][38][39][40][41]. With regard to DBTTF, the signal is present at 1508 cm −1 for C-S, at 1151 cm −1 for C-H, and at 783 cm −1 for C=C [42].…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Hybrid Membranes Containing Nylon-11 and Organic Semiconductor Particles with Potential Applications in Molecular Electronics

et al. 2019

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Chemical degradation is a major disadvantage in the development of organic semiconductors. This work proposes the manufacture and characterization of organic semiconductor membranes in order to prevent semiconductor properties decreasing. Semiconductor membranes consisting of Nylon-11 and particles of π-conjugated molecular semiconductors were manufactured by high-vacuum evaporation followed by thermal relaxation. Initially, and with the aim of obtaining semiconductor particles, bulk heterojunction (BHJ) was carried out using green chemistry techniques between the zinc phthalocyanine (ZnPc) and the zinc hexadecafluoro-phthalocyanine (F 16 ZnPc) as n-type molecular semiconductors with the p-type molecular semiconductor dibenzotetrathiafulvalene (DBTTF). Consequently, the π-conjugated semiconductors particles were embedded in a Nylon-11 matrix and characterized, both structurally and considering their optical and electrical properties. Thin films of these materials were manufactured in order to comparatively study the membranes and precursor semiconductor particles. The membranes presented bandgap (E g ) values that were lower than those obtained in the films, which is an indicator of an improvement in their semiconductor capacity. Finally, the membranes were subjected to accelerated lighting conditions, to determine the stability of the polymer and the operating capacity of the membrane. After fatigue conditions, the electrical behavior of the proposed semiconductor membranes remained practically unaltered; therefore, they could have potential applications in molecular electronics. The chemical stability of membranes, which did not degrade in their polymer compound, nor in the semiconductor, was monitored by IR spectroscopy.

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Section: Resultsmentioning

confidence: 99%

Fabrication of Hybrid Membranes Containing Nylon-11 and Organic Semiconductor Particles with Potential Applications in Molecular Electronics

et al. 2019

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“…The multiple discovered uses offer considerable potential for optoelectronics progress. It is worth mentioning that small semiconductor molecules (MSCs) are a fundamental pillar in the development of flexible electronics, due to their optical and electrical properties and manipulation possibilities [1,8]. MSCs are a class of organic semiconductors and their advantage arises from different characteristics, such as their compatibility with different substrates (including flexible) and the availability of various deposition methods for the preparation of thin films such as spin-coating or high vacuum sublimation.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the incursion in flexible electronics has promoted the use of MSCs, obtaining a reduction in manufacturing costs and environmental impact. As a consequence, the production of such materials has increase compared to current conventional electronics [8,9]. MSCs with intrinsic semiconducting properties were developed in the 60's, these attributes are obtained due to their molecular structure and the material selected for its doping [1,9,10].…”

Section: Introductionmentioning

confidence: 99%

“…The above with the purpose of minimizing the possible loss of current in the devices due to the presence of charge extraction or injection barriers between the electrodes and the phthalocyanine. The behavior of the In(III)PcCl was evaluated through the manufacture and characterization of devices constituted by MSCs widely known for their behavior in optoelectronic devices [1,[8][9][10][11][12]. The presence of these MSCs allowed differentiating and determining the behavior of the In(III)PcCl, considering also its integration as FHJ active layer constituent and as BHJ constituent in devices.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of the Indium(III) Phthalocyanine Chloride Films on the Behavior of Flexible Devices of Flat and Disperse Heterojunction

et al. 2019

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By means of flat-heterojunction structures based on small semiconductor molecules (MSCs), an analysis of the indium(III) phthalocyanine chloride (In(III)PcCl) film as a constituent of optoelectronic devices was performed. The study included the behavior of In(III)PcCl playing three different roles: a donor species, an electronic acceptor, and a hole layer carrier. The flat-heterojunction structures were prepared by vacuum deposition method that permits a controlled layer-by-layer growth of high purity films. The investigated structures were characterized by scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS), UV-vis spectroscopy and optical bandgaps were obtained by Tauc's and Cody's methods. As the structures exhibit a large spectral absorption in the visible range, they were incorporated into flat-heterojunction devices based on flexible and rigid substrates. However, during the synthesis of those structures, the disperse heterojunction arrangement was found and indeed it showed to be more efficient than the initial flat-heterojunction. In order to complement these results, disperse heterojunction arrangement structure as well as its bandgap value were obtained by DFT calculations. Finally, the electronic behavior of both fabricated devices, disperse heterojunction and flat-heterojunction were compared.

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“…During the flight toward the substrate to be coated, the volatile matrix molecules are pumped away, so only the non-volatile solute molecules impinge on the substrate and adsorb onto its surface. Albeit great success has been achieved with MAPLE in many applications such gas sensor, [4][5][6] organic photovoltaic cell, [7][8][9] and organic light-emitting diode, 10 as far as we know, there has been no report on utilizing MAPLE for depositing the dye in DSSC. Therefore, in this work, we investigated the feasibility of using MAPLE a E-mail: sychen@ltl.iams.sinica.edu.tw 2158-3226/2016/6(8)/085011/9…”

Section: Introductionmentioning

confidence: 99%

Deposition of organic dyes for dye-sensitized solar cell by using matrix-assisted pulsed laser evaporation

Yen

Wang

et al. 2016

AIP Advances

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The deposition of various distinct organic dyes, including ruthenium complex N3, melanin nanoparticle (MNP), and porphyrin-based donor-π-acceptor dye YD2-o-C8, by using matrix-assisted pulsed laser evaporation (MAPLE) for application to dye-sensitized solar cell (DSSC) is investigated systematically. It is found that the two covalently-bonded organic molecules, i.e., MNP and YD2-o-C8, can be transferred from the frozen target to the substrate with maintained molecular integrity. In contrast, N3 disintegrates in the process, presumably due to the lower bonding strength of metal complex compared to covalent bond. With the method, DSSC using YD2-o-C8 is fabricated, and an energy conversion efficiency of 1.47% is attained. The issue of the low penetration depth of dyes deposited by MAPLE and the possible resolution to it are studied. This work demonstrates that MAPLE could be an alternative way for deposition of organic dyes for DSSC.

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Flexible heterostructures based on metal phthalocyanines thin films obtained by MAPLE

Cited by 37 publications

References 29 publications

Fabrication of Hybrid Membranes Containing Nylon-11 and Organic Semiconductor Particles with Potential Applications in Molecular Electronics

Fabrication of Hybrid Membranes Containing Nylon-11 and Organic Semiconductor Particles with Potential Applications in Molecular Electronics

The Effect of the Indium(III) Phthalocyanine Chloride Films on the Behavior of Flexible Devices of Flat and Disperse Heterojunction

Deposition of organic dyes for dye-sensitized solar cell by using matrix-assisted pulsed laser evaporation

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