Molecular interface with CMOS is an area indispensable to the enhancement of our understanding of the nano-scale world. We report the integration of fullerenes in CMOS gate stack and demonstrate a functional molecular...
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Penetrating neural probe arrays are powerful bio-integrated devices for studying basic neuroscience and applied neurophysiology,underlying neurological disorders,and understanding and regulating animal and human *** p...
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Penetrating neural probe arrays are powerful bio-integrated devices for studying basic neuroscience and applied neurophysiology,underlying neurological disorders,and understanding and regulating animal and human *** paper presents a penetrating microprobe array constructed in thin and flexible fashion,which can be seamlessly integrated with the soft curvy *** function of the microprobes is enabled by transfer printed ultra-thin Si *** a proof-of-concept device,microprobe array with Si photodetector arrays are demonstrated and their capability of mapping the photo intensity in space are *** design strategies of utilizing thin polyimide based microprobes and supporting substrate,and employing the heterogeneously integrated thin optoelectronics are keys to accomplish such a *** experimental and theoretical investigations illustrate the materials,manufacturing,mechanical and optoelectronic aspects of the *** this paper primarily focuses on the device platform development,the associated materials,manufacturing technologies,and device design strategy are applicable to more complex and multi-functionalities in penetrating probe array-based neural interfaces and can also find potential utilities in a wide range of bio-integrated systems.
An exact transient solution is presented for the spatial and temporal variation of the injected minority carrier distribution and for the total number of injected minority carriers in a double heterojunction device, e...
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The micro-morphology and molecular stacking play a key role in determining the charge transport process and nonradiative energy loss, thus impacting the performances of organic solar cells(OSCs). To address this issue...
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The micro-morphology and molecular stacking play a key role in determining the charge transport process and nonradiative energy loss, thus impacting the performances of organic solar cells(OSCs). To address this issue, a non-fullerene acceptor PhC6-IC-F with alkylbenzene side-chain, possessing optimized molecular stacking, complementary absorption spectra and forming a cascade energy level alignment in the PM6:BTP-eC9 blend, is introduced as guest acceptor to improve efficiency of ternary OSCs. The bulky phenyl in the side-chain can regulate crystallinity and optimizing phase separation between receptors in ternary blend films, resulting in the optimal phase separations in the ternary films. As a result, high efficiencies of 18.33% as photovoltaic layer are obtained for PhC6-IC-F-based ternary devices with excellent fill factor(FF) of 78.92%. Impressively, the ternary system produces a significantly improved open circuit voltage(V_(oc)) of 0.857 V compared with the binary device,contributing to the reduced density of trap states and suppressed non-radiative recombination result in lower energy loss. This work demonstrates an effective approach for adjusting the aggregation, molecular packing and fine phase separation morphology to increase V_(oc) and FF, paving the way toward high-efficiency OSCs.
The authors have recently presented a novel concept for the development of vacuum field emission (VFE) differential amplifier (diff-amp) based on a matched pair of carbon nanotube (CNT) triodes and reported the prelim...
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Broadband light detection and sensing are widely applied in modern *** a promising candidate for next-generation two-dimensional(2D)optoelectronic material,bismuth oxyselenide(Bi_(2)O_(2)Se)nanoplates exhibit many pro...
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Broadband light detection and sensing are widely applied in modern *** a promising candidate for next-generation two-dimensional(2D)optoelectronic material,bismuth oxyselenide(Bi_(2)O_(2)Se)nanoplates exhibit many prospects in the application of visible light detection due to their peculiar *** this work,we report the photodetection performance of single-crystal 2D Bi_(2)O_(2)Se nanoplates grown on SiO_(2)based on a ternary-alloy growth model by utilizing chemical vapor deposition(CVD).The Bi_(2)O_(2)Se nanoplates were found to have an even and uniform square shape with side lengths up to 15μm and an approximate thickness of 15 nm.A visible-light photodetector was fabricated based on a CVD-grown Bi_(2)O_(2)Se nanoplate,and characterized by a set of illumination experiments using a 400 nm laser at temperatures ranging from 77 to 370 *** device exhibited superior performance at the temperature of 77 K,with a responsivity of 523 A/W,a specific detectivity of 1.37×10^(11)Jones,a response time of 0.2175 ms,an external quantum efficiency of 162,119.44%,resulting in high-quality and fullcolor imaging in the visible *** results indicate that the single-crystalline Bi_(2)O_(2)Se nanoplates have excellent potential in broadband photodetection and non-cryogenic imaging.
We report on energy bands and breakdown characteristics of Al2O3 dielectrics on ultra-wide bandgap (UWBG) AlGaN heterostructures. Metal-dielectric-semiconductor structures are important to sustain high fields needed f...
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An approach to formation of high-density, horizontally aligned arrays of pristine, individual single-walled carbon nanotubes (see image) is presented. The method involves multiple cycles of chemical vapor deposition g...
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An approach to formation of high-density, horizontally aligned arrays of pristine, individual single-walled carbon nanotubes (see image) is presented. The method involves multiple cycles of chemical vapor deposition growth to achieve densities and levels of uniformity in coverage better than those previously possible.
We demonstrate threefold directional light concentration from an organic light-emitting diode luminaire for use in spot lighting and other applications where high intensity illumination is *** concentrating luminaire ...
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We demonstrate threefold directional light concentration from an organic light-emitting diode luminaire for use in spot lighting and other applications where high intensity illumination is *** concentrating luminaire comprises four triangular,large-area green electrophosphorescent organic light emitting diodes(PHOLEDs)deposited on plastic substrates and assembled into a pyramidal structure with an open base that serves as the light exit *** PHOLED surfaces are highly reflective to direct the emission from the devices to the aperture independent of the original emission position within the *** far-field intensity profile of the concentrator has a‘batwing’distribution that meets the requirements for general lighting for uniform illumination of planar surfaces.
The MicroChannel spatial light modulator is an optically-addressed spatial light modulator that is being developed for low-light-level, real-time, optical signal processing. In addition to its framed or continuous rea...
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