Advanced Optical Materials

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Recently Published Articles

  1. Second-Order Nonlinear Optical Switch of a New Hydrogen-Bonded Supramolecular Crystal with a High Laser-Induced Damage Threshold

    Zhihua Sun, Shenhui Li, Shuquan Zhang, Feng Deng, Maochun Hong and Junhua Luo

    Article first published online: 22 SEP 2014 | DOI: 10.1002/adom.201400301

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    A new H-bonded supramolecular crystal, bis(imidazolium hydrochlorate) dihydrate 18-crown-6, exhibits superior second-harmonic generation (SHG) switching performance including having a large contrast, excellent reversibility, and quite a high laser-induced damage threshold. The findings provide a concrete solid-state SHG switch and will urge further development of desirable NLO modulators, as well as to establish new design strategies.

  2. Wideband Omnidirectional Polarization-Insensitive Light Absorbers Made with 1D Silicon Gratings

    Jae Woong Yoon, Kyu Jin Lee, Wenhua Wu and Robert Magnusson

    Article first published online: 22 SEP 2014 | DOI: 10.1002/adom.201400273

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    A 1D amorphous Si grating structure that efficiently absorbs full hemispherical unpolarized light in the entire visible spectral domain is demonstrated. The absorber provides a broad spectral continuum of densely populated resonant photonic states as well as a cooperating wide-angular antireflection effect. The absorber performance is experimentally verified with precise fabrication and spectral analysis.

  3. Recent Advances in Optically Active Polymer-Based Nanowires and Nanotubes

    Alexandre Garreau and Jean-Luc Duvail

    Article first published online: 22 SEP 2014 | DOI: 10.1002/adom.201400232

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    One-dimensional nanostructures with innovative architectures have been extensively studied recently. Engineering charge, exciton, and photon behavior are central points to address the challenges for the next generation of optoelectronic and photonic devices. Recent progress in polymer- and hybrid-based nanowires and nanotubes is reported, along with the resulting improvements in photoconduction, photovoltaic behavior, light emission, waveguiding, and sensing.

  4. Hybrid Graphene–Giant Nanocrystal Quantum Dot Assemblies with Highly Efficient Biexciton Emission

    Yongqian Gao, Oleksiy Roslyak, Enkeleda Dervishi, Niladri S. Karan, Yagnaseni Ghosh, Chris J. Sheehan, Feng Wang, Gautam Gupta, Aditya Mohite, Andrew M. Dattelbaum, Stephen K. Doorn, Jennifer A. Hollingsworth, Andrei Piryatinski and Han Htoon

    Article first published online: 22 SEP 2014 | DOI: 10.1002/adom.201400362

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    A monolayer of graphene strongly enhances the bi-exciton emission efficiency of CdSe/CdS core/thick-shell nanocrystal quantum dots (NQDs), the so-called “giant”-NQDs. As an explanation, a new plasmon mode is proposed, resulting from local oscillations of excess hole density (the hole puddle) that is accumulated directly underneath a charged g-NQD.

  5. Sol–Gel Route Toward Efficient and Robust Distributed Bragg Reflectors for Light Management Applications

    Barbara Brudieu, A. Le Bris, J. Teisseire, F. Guillemot, G. Dantelle, S. Misra, P. Roca i Cabarrocas, F. Sorin and T. Gacoin

    Article first published online: 18 SEP 2014 | DOI: 10.1002/adom.201400292

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    A simple and versatile liquid-based approach for the deposition of macroporous silica and dense titania layers is developed to elaborate highly reflective and wavelength tunable Distributed Bragg Reflectors over a large surface area. This material combination is robust against ageing tests under humidity exposure. Its integration in a a-Si:H solar cell is demonstrated, and results in an increase of light absorption and photocurrent.