Highly Transparent and UV-Resistant Superhydrophobic SiO<sub>2</sub>-Coated ZnO Nanorod Arrays

Gao, Yangqin; Gereige, Issam; Labban, Abdulrahman El; Cha, Dongkyu; Isimjan, Tayirjan Taylor; Beaujuge, Pierre M.

doi:10.1021/am405513k

Cited by 129 publications

(68 citation statements)

References 43 publications

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“…Gao et al [43] fabricated highly transparent and UV-resistant superhydrophobic arrays of SiO 2 -coated ZnO nanorods that were prepared in a sequence of low-temperature (<150 • C) steps on both glass and thin sheets of polyester, PET (2 × 2 in. 2 ), and the superhydrophobic nanocomposite is shown to have minimal impact on solar cell device performance under AM1.5G illumination (See Figure 15a).…”

Section: Transparent Non-wettable Coatings From Ceramic-based Nanostrmentioning

confidence: 99%

On the Durability and Wear Resistance of Transparent Superhydrophobic Coatings

Bayer

2017

Coatings

122

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Transparent liquid repellent coatings with exceptional wear and abrasion resistance are very demanding to fabricate. The most important reason for this is the fact that majority of the transparent liquid repellent coatings have so far been fabricated by nanoparticle assembly on surfaces in the form of films. These films or coatings demonstrate relatively poor substrate adhesion and rubbing induced wear resistance compared to polymer-based transparent hydrophobic coatings. However, recent advances reported in the literature indicate that considerable progress has now been made towards formulating and applying transparent, hydrophobic and even oleophobic coatings onto various substrates which can withstand certain degree of mechanical abrasion. This is considered to be very promising for anti-graffiti coatings or treatments since they require resistance to wear abrasion. Therefore, this review intends to highlight the state-of-the-art on materials and techniques that are used to fabricate wear resistant liquid repellent transparent coatings so that researchers can assess various aptitudes and limitations related to translating some of these technologies to large scale stain repellent outdoor applications.

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Section: Transparent Non-wettable Coatings From Ceramic-based Nanostrmentioning

confidence: 99%

On the Durability and Wear Resistance of Transparent Superhydrophobic Coatings

Bayer

2017

Coatings

122

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“…[25][26][27] The strong absorption of ZnO in the UV region with a band edge cut-off at 370 nm is also important to blocking UV light and protecting the photoactive layer. [ 28 ] The use of metal oxide interlayers in polymer solar cells has great potential because metal oxides are abundant, thermally stable, and can be used in fl exible devices. Here, a layer-by-layer (LbL) protocol is reported as a facile, room-temperature, solution-processed method to prepare electron transport layers from commercial ZnO nanoparticles and polyacrylic acid (PAA) with a controlled and tunable porous structure, which provides large interfacial contacts with the active layer.…”

Section: Wileyonlinelibrarycommentioning

confidence: 99%

Ambient Layer‐by‐Layer ZnO Assembly for Highly Efficient Polymer Bulk Heterojunction Solar Cells

Eita

Labban

Cruciani

et al. 2015

Adv Funct Materials

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To produce printable, portable, and fl exible bulk heterojunction (BHJ) solar cells, the development of effi cient, inexpensive, and high-throughput fabrication methods is critically important. A number of methods to fabricate BHJ solar cells already exist, including highvacuum deposition systems, solution processing, and direct chemical deposition on device substrates. [ 5,[14][15][16] Because solution processing is amenable to the formation of an interpenetrating donoracceptor network, while also being a costeffective approach, it is one of the most promising approaches to large-scale BHJ solar cell modules. [ 15,16 ] Among various solution processable donor-acceptor systems, polymer BHJ solar cells based on interpenetrating networks of conjugated polymer and fullerene derivatives as donor and acceptor materials have exhibited a power conversion effi ciency (PCE) up to ≈10%. [17][18][19][20] This dramatic increase in photovoltaic performance is caused by the optimization of the morphology of the active layer, the device architecture, and the interface control of the electron donors and acceptors. The other important approach to optimizing the interpenetrating networks and interfacial contacts between the donor and acceptor components is the use of hybrid polymer-metal oxides, in which the polymer acts as the light-absorbing component. [ 15,[21][22][23][24] One of the key issues associated with the polymer-metal oxide BHJ solar cells is the high electron mobilities in the inorganic component compared with the modest hole mobilities in the polymer. Effi cient polymer-metal oxide BHJ solar cells have been demonstrated using ZnO nanoparticles and a conducting polymer, such as a poly-1,4-phenylenevinylene derivative. [ 15,22 ] For instance, under AM1.5 conditions, polymer/ZnO solar cells with short circuit current densities ( J SC ) of 3.3 mA cm −2 , open circuit voltages ( V OC ) of 0.81 V, fi ll factors (FF) of ≈60%, and overall PCE of 1.6% have been reported. [ 15 ] This fi nding indicates that ZnO, an n -type metal oxide, possessing a wide direct bandgap (3.37 eV), an appropriate conduction band, and high electrontransporting properties, is an effective electron transport layer (ETL) for inverted polymer solar cells. [25][26][27] The strong absorption of ZnO in the UV region with a band edge cut-off at 370 nm is also important to blocking UV light and protecting the photoactive layer.

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“…Such self-cleaning and antifouling performance to dust and common liquids would satisfy the requirements of real-life applications. Similarly, Gao et al [108] fabricated a transparent and UV-resistant superhydrophobic array of SiO2-coated ZnO nanorods, which were prepared on a thin sheet of PET film. …”

Section: Sol-gel Technique and Spray Coatingmentioning

confidence: 99%

Chemical and Physical Pathways for Fabricating Flexible Superamphiphobic Surfaces with High Transparency

et al. 2018

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Since the discovery of the self-cleaning properties of the lotus effect, the wetting of surfaces were intensively investigated due to their potential application in many industrial sectors. The transparency of flexible liquid repellent coatings are a major industrial problem and their economic consequences are widely known. Hence, a comprehensive understanding of the developments of flexible and transparent superamphiphobic surfaces is required in a number of technological and industrial situations. In this review, we aim to discuss the progress in the design, synthesis, fabrication techniques, and applications of flexible and transparent superamphiphobic surfaces. We start with an introduction, exploring the contact angles and wetting states for superhydrophilic, superhydrophobic, and superoleophobic surfaces, and continue with a review of the wetting transition of such surfaces. Then, we highlight the fabrication techniques involved for the preparation of flexible and transparent superamphiphobic surfaces. This review also discusses the key issues in the fabrication process and surfaces, and their features in improving durability characteristics and self-repellent performance. Then we suggest various recommendations for the improvement of mechanical durability along with potential future directions towards more systematic methods that will also be acceptable for industry. Finally, we conclude with some challenges and potential applications.

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Highly Transparent and UV-Resistant Superhydrophobic SiO₂-Coated ZnO Nanorod Arrays

Cited by 129 publications

References 43 publications

On the Durability and Wear Resistance of Transparent Superhydrophobic Coatings

On the Durability and Wear Resistance of Transparent Superhydrophobic Coatings

Ambient Layer‐by‐Layer ZnO Assembly for Highly Efficient Polymer Bulk Heterojunction Solar Cells

Chemical and Physical Pathways for Fabricating Flexible Superamphiphobic Surfaces with High Transparency

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Highly Transparent and UV-Resistant Superhydrophobic SiO2-Coated ZnO Nanorod Arrays

Cited by 129 publications

References 43 publications

On the Durability and Wear Resistance of Transparent Superhydrophobic Coatings

On the Durability and Wear Resistance of Transparent Superhydrophobic Coatings

Ambient Layer‐by‐Layer ZnO Assembly for Highly Efficient Polymer Bulk Heterojunction Solar Cells

Chemical and Physical Pathways for Fabricating Flexible Superamphiphobic Surfaces with High Transparency

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Highly Transparent and UV-Resistant Superhydrophobic SiO₂-Coated ZnO Nanorod Arrays