General Route to Vertical ZnO Nanowire Arrays Using Textured ZnO Seeds

Greene, Lori E.; Law, Matt; Tan, Dawud H.; Montano, Max; Goldberger, Joshua E.; Somorjai, Gábor A.; Yang, Peidong

doi:10.1021/nl050788p

Cited by 1,407 publications

(1,184 citation statements)

References 45 publications

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“…The nanowire arrays can be synthesised at about 80 °C on various substrates. The uniformity and periodicity of these nanowires can be well controlled by pre‐sputtering a layer of seeds to the substrate 33. This technique provides a low cost, precticaland large scale approach to fabricate PENGs.…”

Section: Materials and Device Designmentioning

confidence: 99%

Recent Progress on Piezoelectric and Triboelectric Energy Harvesters in Biomedical Systems

et al. 2017

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Implantable medical devices (IMDs) have become indispensable medical tools for improving the quality of life and prolonging the patient's lifespan. The minimization and extension of lifetime are main challenges for the development of IMDs. Current innovative research on this topic is focused on internal charging using the energy generated by the physiological environment or natural body activity. To harvest biomechanical energy efficiently, piezoelectric and triboelectric energy harvesters with sophisticated structural and material design have been developed. Energy from body movement, muscle contraction/relaxation, cardiac/lung motions, and blood circulation is captured and used for powering medical devices. Other recent progress in this field includes using PENGs and TENGs for our cognition of the biological processes by biological pressure/strain sensing, or direct intervention of them for some special self‐powered treatments. Future opportunities lie in the fabrication of intelligent, flexible, stretchable, and/or fully biodegradable self‐powered medical systems for monitoring biological signals and treatment of various diseases in vitro and in vivo.

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Section: Materials and Device Designmentioning

confidence: 99%

Recent Progress on Piezoelectric and Triboelectric Energy Harvesters in Biomedical Systems

et al. 2017

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“…These structures have the advantage of providing long and uninterrupted paths for electron transport while maintaining a high area density as that found in random nanoparticulate films. [20][21][22][23] There has been recent progress in obtaining highly ordered transparent TiO 2 nanotube arrays of the type shown in Fig. 1 for DSC with high electron lifetimes and excellent pathways for electron percolation.…”

Section: Nanoparticles and Nanostructuresmentioning

confidence: 99%

Physical electrochemistry of nanostructured devices

Bisquert

2008

Phys. Chem. Chem. Phys.

244

273

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“…Of particular interest for device applications is the growth of ZnO nanorod arrays (NRAs) from low temperature, aqueous deposition techniques [10] which, over the past decade, has seen morphological improvements in alignment and uniformity through the introduction of precursor ZnO seed layers [11] , pH control of the growth environment [12,13] , additive incorporation [14] , as well as manipulation of growth variables including duration and temperature [15][16][17][18] . Efforts to implement nanorod arrays into bulk heterojunction hybrid organic-inorganic photovoltaics (hPV) have led to improved devices attributed to improvements in charge collection [19,20] .…”

Section: Introductionmentioning

confidence: 99%

ZnO Nanorod Arrays as Electron Injection Layers for Efficient Organic Light Emitting Diodes

Faria

Campbell

McLachlan

2015

Adv Funct Materials

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Nanostructured oxide arrays have received significant attention as charge injection and collection electrodes in numerous optoelectronic devices. Zinc oxide (ZnO) nanorods have received particular interest owing to the ease of fabrication using scalable, solution processes with a high degree of control of rod dimension and density. Here we implement vertical ZnO nanorods as electron injection layers in organic light emitting diodes (OLEDs) for display and lighting purposes. Implementing our nanorods into devices with an emissive polymer, poly(9,9-dioctyluorene-altbenzothiadiazole) (F8BT) and poly(9,9-di-n-octylfluorene-alt-N-(4-butylphenyl)dipheny-lamine) (TFB) as an electron blocking layer, brightness and efficiencies up to 8600 cd/m 2 and 1.66 cd/A were achieved. We highlight simple solution processing methodologies combined with post-deposition thermal processing to achieve complete wetting of the nanorod arrays with the emissive polymer. The introduction of TFB to minimize charge leakage and non-radiative exciton decay results in dramatic increases to device yields and provides an insight into the operating mechanism of these devices. We demonstrate the detected emission originates from within the polymer layers with no evidence of ZnO band-2 edge or defect emission. The work represents a significant development for the ongoing implementation of ZnO nanorod arrays into efficient light emitting devices.

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General Route to Vertical ZnO Nanowire Arrays Using Textured ZnO Seeds

Cited by 1,407 publications

References 45 publications

Recent Progress on Piezoelectric and Triboelectric Energy Harvesters in Biomedical Systems

Recent Progress on Piezoelectric and Triboelectric Energy Harvesters in Biomedical Systems

Physical electrochemistry of nanostructured devices

ZnO Nanorod Arrays as Electron Injection Layers for Efficient Organic Light Emitting Diodes

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