Large-Area Well-Ordered Nanodot Array Pattern Fabricated With Self-Assembled Nanosphere Template

Li, Huaqing; Low, Joyce Siew Yong; Brown, Kolin S.; Wu, Nianqiang

doi:10.1109/jsen.2008.923266

Cited by 44 publications

(46 citation statements)

References 13 publications

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“…This is the first example of EBL-templating of ZnO nanowires at high-resolution pitches suited to QD-based PV devices. Future research can pair larger ZnO seed layer grains with transparent or flexible substrates and take advantage of parallel lithographic approaches such as nano-imprint lithography [42], self-assembled microspheres [43] or low-cost optical interference lithography [44]. Beyond ZnO nanowire QD PVs, this work is widely applicable in other fields, such as nanomechanical energy generators, surface-energy engineering, nanowire transistors, and templated growth of other inorganic nanowires [45][46][47][48].…”

Section: Resultsmentioning

confidence: 99%

Control of zinc oxide nanowire array properties with electron-beam lithography templating for photovoltaic applications

et al. 2015

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Hydrothermally synthesized zinc oxide nanowire arrays have been used as nanostructured acceptors in emerging photovoltaic (PV) devices. The nanoscale dimensions of such arrays allow for enhanced charge extraction from PV active layers, but the device performance critically depends on the nanowire array pitch and alignment. In this study, we templated hydrothermally-grown ZnO nanowire arrays via high-resolution electron-beam-lithography defined masks, achieving the dual requirements of high-resolution patterning at a pitch of several hundred nanometers, while maintaining hole sizes small enough to control nanowire array morphology. We investigated several process conditions, including the effect of annealing sputtered and spincoated ZnO seed layers on nanowire growth, to optimize array property metrics -branching from individual template holes and off-normal alignment. We found that decreasing template hole size decreased branching prevalence but also reduced alignment. Annealing seed layers typically improved alignment, and sputtered seed layers yielded nanowire arrays superior to spincoated seed layers. We show that these effects arose from variation in the size of the template holes relative to the ZnO grain size in the seed layer.The quantitative control of branching and alignment of the nanowire array that is achieved in this study will open new paths toward engineering more efficient electrodes to increase photocurrent in nanostructured PVs. This control is also applicable to inorganic nanowire growth in general, nanomechanical generators, nanowire transistors, and surface-energy engineering.2

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Section: Resultsmentioning

confidence: 99%

Control of zinc oxide nanowire array properties with electron-beam lithography templating for photovoltaic applications

et al. 2015

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“…These patterns were prepared by nano-sphere lithography with highly monodisperse 500-nm polystyrene beads (Sigma Aldrich, USA) and subsequent deposition of 50-nm silver layer and lift-off of the beads. [30][31][32] The resulting patterns were honeycomb-like regular arrays of 500 nm period ( Figure 4 f). The minimal gap was 130 nm for the deposition conditions used in our experiment.…”

Section: Communicationmentioning

confidence: 98%

Shape‐Controllable Microlens Arrays via Direct Transfer of Photocurable Polymer Droplets

et al. 2012

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“…Sodium Dodecyl Sulphate (SDS) was added to this bath to a concentration of 150 µg L −1 : it has been demonstrated in the literature that SDS can aid the assembly of reagent microspheres on a water surface. 42,43 780 nm diameter carboxylate-terminated polystyrene reagent microspheres obtained from Duke Scientific were mixed with reagent-grade ethanol into a 1:2 microsphere solution : ethanol mixture by volume. This mixture was introduced to the water surface via a hydrophilic glass slide previously cleaned in SDS.…”

Section: Methodsmentioning

confidence: 99%

“…[32][33][34][35][36][37][38][39][40][41][42][43] The most pronounced limitation of such techniques is the difficulty of achieving long-range ordering in the colloidal mask.…”

Section: Introductionmentioning

confidence: 99%

Effect of disorder studied with ferromagnetic resonance for arrays of tangentially magnetized submicron Permalloy disks fabricated by nanosphere lithography

Ross

Kostylev

Stamps

2011

Journal of Applied Physics

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Tangentially magnetized trigonal arrays of sub-micron Permalloy discs are characterized with ferromagnetic resonance to determine the possible contributions to frequency and linewidth from array disorder. Each array is fabricated by a water-surface self-assembly lithographic technique, and consists of a large trigonal array of 700 nm diameter magnetic discs. Each array is characterized by a different degree of ordering. Two modes are present in the ferromagnetic resonance spectra: a large amplitude, 'fundamental' mode and a lower amplitude mode at higher field. Angular dependence of the resonance field in a very well ordered array is found to be negligible for both modes. The relationship between resonance frequency and applied magnetic field is found to be uncorrelated with array disorder. Linewidth is found to increase with increasing array disorder.

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Large-Area Well-Ordered Nanodot Array Pattern Fabricated With Self-Assembled Nanosphere Template

Cited by 44 publications

References 13 publications

Control of zinc oxide nanowire array properties with electron-beam lithography templating for photovoltaic applications

Control of zinc oxide nanowire array properties with electron-beam lithography templating for photovoltaic applications

Shape‐Controllable Microlens Arrays via Direct Transfer of Photocurable Polymer Droplets

Effect of disorder studied with ferromagnetic resonance for arrays of tangentially magnetized submicron Permalloy disks fabricated by nanosphere lithography

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