Highly Efficient Photorefractive Organic Polymers Based on Benzonitrile Shiff Bases Nonlinear Chromophores

Herrera-Ambriz, Víctor M.; Maldonado, José Luis; Rodríguez, Mario; Castro-Beltrán, Rigoberto; Ramos‐Ortíz, Gabriel; Magaña-Vergara, Nancy E.; Menéses-Nava, M. A.; Barbosa-Garcı́a, Oracio; Santillán, Rosa; Farfán, Norberto; Dang, Florian Xuan; Lacroix, Pascal G.; Ledoux‐Rak, Isabelle

doi:10.1021/jp206204p

Cited by 13 publications

(13 citation statements)

References 51 publications

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“…To solve these problems, herein we propose a new protection approach by introducing a thin polymer interlayer featuring hydrophobility and conductivity in between perovskite and HTM to resist moisture and suppress charge recombination simultaneously. As a widely used conductive organic polymer, poly-N-vinylcarbazole (PVK) is proven to be effective as hole carrier in photorefractive applications [36][37][38] and organic solar cells. [39][40][41] However, PVK as polymer interlayer between perovskite and HTM of PSCs has never been reported.…”

mentioning

confidence: 99%

A multifunctional poly-N-vinylcarbazole interlayer in perovskite solar cells for high stability and efficiency: a test with new triazatruxene-based hole transporting materials

et al. 2017

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mentioning

confidence: 99%

A multifunctional poly-N-vinylcarbazole interlayer in perovskite solar cells for high stability and efficiency: a test with new triazatruxene-based hole transporting materials

et al. 2017

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“…The hydrophobic and conductive poly-N-vinylcarbazole (PVK) was utilized as an interlayer at the perovskite/HTL interface. PVK is often used as ah ole carrieri np hotorefractive applications [66,67] and organic solarc ells. [68] A1 0nm-thick PVK interlayer was formed between the perovskite and HTL, where the effects of concentration on PVK film thickness, morphology,a nd photovoltaic performance were investigated and ac oncentration of 8mgmL À1 led to as ubstantial improvement of J sc , V oc ,a nd FF.…”

Section: Organic Molecules or Polymersmentioning

confidence: 99%

Impact of Interfacial Layers in Perovskite Solar Cells

2017

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Perovskite solar cells (PCSs) are composed of organic–inorganic lead halide perovskite as the light harvester. Since the first report on a long‐term‐durable, 9.7 % efficient, solid‐state perovskite solar cell, organic–inorganic halide perovskites have received considerable attention because of their excellent optoelectronic properties. As a result, a power conversion efficiency (PCE) exceeding 22 % was certified. Controlling the grain size, grain boundary, morphology, and defects of the perovskite layer is important for achieving high efficiency. In addition, interfacial engineering is equally or more important to further improve the PCE through better charge collection and a reduction in charge recombination. In this Review, the type of interfacial layers and their impact on photovoltaic performance are investigated for both the normal and the inverted cell architectures. Four different interfaces of fluorine‐doped tin oxide (FTO)/electron‐transport layer (ETL), ETL/perovskite, perovskite/hole‐transport layer (HTL), and HTL/metal are classified, and their roles are investigated. The effects of interfacial engineering with organic or inorganic materials on photovoltaic performance are described in detail. Grain‐boundary engineering is also included because it is related to interfacial engineering and the grain boundary in the perovskite layer plays an important role in charge conduction, recombination, and chargecarrier life time.

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“…The organic PR polymer samples, Dc:PVK:ECZ:C 60 (25:49:25:1 wt%) were synthesized and tested, according to the reported procedure [15]. Thickness of the PR samples was about 110 µm.…”

Section: Lus Experimental Setupmentioning

confidence: 99%

“…In this work, we report on a new LUS homodyne receiver [4] [11], at 532 nm operating wavelength using organic PR composites (To the best of our knowledge, this is for the first time), based on the nonlinear chromophore 4-[4-(diethylamino)-2-hydroxybenzylideneamino] benzonitrile (Dc), fullerene C 60 as sensitizer, poly (Nvinylcarbazole) (PVK) as hole transporting polymer, and ECZ as plasticizer [15]. We show that this polymer based LUS interferometer is highly suitable for the remote measurement of the thickness of metal sheets and detection of a subsurface defect position.…”

Section: Introductionmentioning

confidence: 99%

Employing 532 nm Wavelength in a Laser Ultrasound Interferometer Based on Photorefractive Polymer Composites

Zamiri¹,

Reitinger²,

Rodríguez-Rivera³

et al. 2015

OALib

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Laser ultrasonic (LUS) receivers based on photorefractive (PR) materials are contactless and adaptive interferometers, which are used widely for materials characterization. Here, we present a simple LUS interferometer at 532 nm operating wavelength based on organic PR polymer composites (PVK/ECZ/C60) doped with the nonlinear chromophore 4-[4-(diethylamino)-2-hydroxybenzylideneamino] benzonitrile (Dc). A picoseconds laser at 1064 nm wavelength is used to generate ultrasound pulses in aluminum plates and by using this LUS polymer interferometer, detection of these ultrasound waves is remotely performed at the surface of the specimens. The LUS sensor is used to determine the thickness of aluminum plates about 0.25 mm, 3 mm and 10 mm. We also show the potential of this polymer receiver for detection of an artificial defect in a metal sample.

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Highly Efficient Photorefractive Organic Polymers Based on Benzonitrile Shiff Bases Nonlinear Chromophores

Cited by 13 publications

References 51 publications

A multifunctional poly-N-vinylcarbazole interlayer in perovskite solar cells for high stability and efficiency: a test with new triazatruxene-based hole transporting materials

A multifunctional poly-N-vinylcarbazole interlayer in perovskite solar cells for high stability and efficiency: a test with new triazatruxene-based hole transporting materials

Impact of Interfacial Layers in Perovskite Solar Cells

Employing 532 nm Wavelength in a Laser Ultrasound Interferometer Based on Photorefractive Polymer Composites

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