Robust and durable polyhedral oligomeric silsesquioxane-based anti-reflective nanostructures with broadband quasi-omnidirectional properties

Raut, Hemant Kumar; Dinachali, Saman Safari; He, Ai Yu; Ganesh, V.; Saifullah, Mohammad S. M.; Law, J. B. K.; Ramakrishna, Seeram

doi:10.1039/c3ee24037a

Cited by 98 publications

(71 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For replication of the multi-scale patterns on glass, a resin containing a mixture of methacryl POSS and 1,6-hexanediol diacrylate was used as described elsewhere. 20 x and y directions and perfectly matched layer (PML) boundary conditions were set for the z direction. A plane-wave source was directed along the z-axis to calculate the reflectance of the multi-scale ommatidial arrays.…”

Section: Superhydrophobic Anti-fogging Property Of Multi-scale Ommatimentioning

confidence: 99%

Multiscale Ommatidial Arrays with Broadband and Omnidirectional Antireflection and Antifogging Properties by Sacrificial Layer Mediated Nanoimprinting

et al. 2015

Self Cite

View full text Add to dashboard Cite

Moth's eye inspired multiscale ommatidial arrays offer multifunctional properties of great significance in optoelectronic devices. However, a major challenge remains in fabricating these arrays on large-area substrates using a simple and scalable technique. Here we present the fabrication of these multiscale ommatidial arrays over large areas by a distinct approach called sacrificial layer mediated nanoimprinting, which involves nanoimprinting aided by a sacrificial layer. The fabricated arrays exhibited excellent pattern uniformity over the entire patterned area. Optimum dimensions of the multiscale ommatidial arrays determined by the finite-difference time domain simulations served as the design parameters for replicating the arrays on glass. A broadband suppression of reflectance to a minimum of ∼1.4% and omnidirectional antireflection for highly oblique angles of incidence up to 70° were achieved. In addition, superhydrophobicity and superior antifogging characteristics enabled the retention of optical properties even in wet and humid conditions, suggesting reliable optical performance in practical outdoor conditions. We anticipate that these properties could potentially enhance the performance of optoelectronic devices and minimize the influence of in-service conditions. Additionally, as our technique is solely nanoimprinting-based, it may enable scalable and high-throughput fabrication of multiscale ommatidial arrays.

show abstract

Section: Superhydrophobic Anti-fogging Property Of Multi-scale Ommatimentioning

confidence: 99%

Multiscale Ommatidial Arrays with Broadband and Omnidirectional Antireflection and Antifogging Properties by Sacrificial Layer Mediated Nanoimprinting

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…from polymer, Si, SiO 2 and TiO 2 . [ 27,[33][34][35] The biomimetic moth eye nanostructure is potentially advantageous for increasing the light in-coupling in OSCs by extending the wavelength region of the enhanced light response. To our knowledge, there is, however, no report on realizing the active layer with biomimetic moth eye nanostructures in OSCs, except for the application of moth eye nanostructured AR coating on the glass surface for effi ciency improvement.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Light Harvesting in Organic Solar Cells Featuring a Biomimetic Active Layer and a Self‐Cleaning Antireflective Coating

Chen

Zhou

et al. 2014

Advanced Energy Materials

109

125

View full text Add to dashboard Cite

Advanced light manipulation is extremely attractive for applications in organic optoelectronics to enhance light harvesting efficiency. A novel method of fabricating high‐efficiency organic solar cells (OSCs) is proposed using biomimetic moth eye nanostructures in a quasi‐periodic gradient shape active layer and an antireflective coating. A 24.3% increase in photocurrent is realized without sacrificing dark electrical properties, yielding a 22.2% enhancement in power conversion efficiency to a record of 7.86% for OSCs with a poly(3‐hexylthiophene‐2,5‐diyl):indene‐C60 bis‐adduct (P3HT:ICBA) active layer. The experimental and theoretical characterizations verify that the substantial improvement of OSCs is mainly ascribed to the self‐enhanced absorption resulting from the broadband polarization‐insensitive light trapping in biomimetic nanostructured active layer, the reduction in reflectance by the antireflective coating, and surface plasmonic effect excited by corrugated metallic electrode. It is noteworthy that the pathway described here is promising for opening up opportunities to realize high‐performance OSCs towards the future photovoltaic applications.

show abstract

“…[1][2][3][4][5][6] There would be no reflection if there is a destructive interference between the light reflected from the film-substrate and the air-film interfaces. [1][2][3][4][5][6] There would be no reflection if there is a destructive interference between the light reflected from the film-substrate and the air-film interfaces.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of mechanically robust, self-cleaning and optically high-performance hybrid thin films by SiO₂&TiO₂double-shelled hollow nanospheres

Yao

Geng

et al. 2015

Nanoscale

View full text Add to dashboard Cite

Low-cost antireflection (AR) thin films on large-area optical surfaces are important for high-performance optical devices, display devices and photovoltaic cells. In the current work, SiO2&TiO2 double-shell hollow nanospheres (DSHNs) were designed, synthesized and utilized as building blocks for fabricating multifunctional AR thin films. By optimizing the porosity of SiO2&TiO2 DSHN and thin film structure, substrates with DSHN thin films attained transmittance as high as 99.4% and average transmittance up to 98.5% in the visible region. The nano-composite SiO2-TiO2 films exhibited intrinsic superhydrophilicity, anti-fogging and high photocatalytic activity. Tape peeling test, sponge washing test, and high temperature and moisture proof test showed favorable robustness and functional durability of the thin films, which make them extremely attractive for applications in lenses, photovoltaic cells and windows of high-rise buildings.

show abstract

Robust and durable polyhedral oligomeric silsesquioxane-based anti-reflective nanostructures with broadband quasi-omnidirectional properties

Cited by 98 publications

References 49 publications

Multiscale Ommatidial Arrays with Broadband and Omnidirectional Antireflection and Antifogging Properties by Sacrificial Layer Mediated Nanoimprinting

Multiscale Ommatidial Arrays with Broadband and Omnidirectional Antireflection and Antifogging Properties by Sacrificial Layer Mediated Nanoimprinting

Enhanced Light Harvesting in Organic Solar Cells Featuring a Biomimetic Active Layer and a Self‐Cleaning Antireflective Coating

Fabrication of mechanically robust, self-cleaning and optically high-performance hybrid thin films by SiO₂&TiO₂double-shelled hollow nanospheres

Contact Info

Product

Resources

About

Robust and durable polyhedral oligomeric silsesquioxane-based anti-reflective nanostructures with broadband quasi-omnidirectional properties

Cited by 98 publications

References 49 publications

Multiscale Ommatidial Arrays with Broadband and Omnidirectional Antireflection and Antifogging Properties by Sacrificial Layer Mediated Nanoimprinting

Multiscale Ommatidial Arrays with Broadband and Omnidirectional Antireflection and Antifogging Properties by Sacrificial Layer Mediated Nanoimprinting

Enhanced Light Harvesting in Organic Solar Cells Featuring a Biomimetic Active Layer and a Self‐Cleaning Antireflective Coating

Fabrication of mechanically robust, self-cleaning and optically high-performance hybrid thin films by SiO2&TiO2double-shelled hollow nanospheres

Contact Info

Product

Resources

About

Fabrication of mechanically robust, self-cleaning and optically high-performance hybrid thin films by SiO₂&TiO₂double-shelled hollow nanospheres