Mitsubishi Electric

About: Mitsubishi Electric is a company organization based out in Ratingen, Germany. It is known for research contribution in the topics: Signal & Voltage. The organization has 23024 authors who have published 27591 publications receiving 255671 citations. The organization is also known as: Mitsubishi Electric Corporation & Mitsubishi Denki K.K..

Rear-emitter Si heterojunction solar cells with over 23% efficiency

Abstract: We have developed highly crystallized n-type microcrystalline Si layers as window layers for rear emitter Si heterojunction solar cells. We introduce a seed layer between an n-type microcrystalline Si layer and an intrinsic amorphous Si layer to improve the crystallinity of the n-type microcrystalline Si layer. By using this stacked layer instead of an n-type amorphous Si layer, the contact resistance between the n-type thin layer and In2O3:H is reduced without Al-doped ZnO. As a result, we obtain a high short-circuit current and a high fill factor simultaneously, and achieve a solar cell efficiency of 23.43%.

Silicon carbide semiconductor device and method for manufacturing the same

Abstract: A silicon carbide MOSFET that exhibits a high source-to-drain withstand voltage and that involves a smaller difference between gate-to-drain capacitance achieved in an activated state and gate-to-drain capacitance achieved in a deactivated state. A silicon carbide drift layer of a first conductivity type is provided on a silicon carbide substrate of a first conductivity type; a pair of base regions are provided in a surface layer portion of the silicon carbide drift layer and exhibit a second conductivity type; a pair of source regions are provided in interiors of surface layer portions of the pair of base regions and exhibit a first conductivity type; and semi-insulating regions are provided between the silicon carbide substrate and the pair of base regions.

What’s the Frequency, Kenneth?: Sublinear Fourier Sampling Off the Grid

Abstract: We design a sublinear Fourier sampling algorithm for a case of sparse off-grid frequency recovery. These are signals with the form $$f(t) = \sum _{j=1}^k a_j \mathrm{e}^{i\omega _j t} + \int u (\omega )\mathrm{e}^{i\omega t}d\mu (\omega )$$f(t)=?j=1kajei?jt+??(?)ei?tdμ(?); i.e., exponential polynomials with a noise term. The frequencies $$\{\omega _j\}$${?j} satisfy $$\omega _j\in [\eta ,2\pi -\eta ]$$?j?[?,2?-?] and $$\min _{i e j} |\omega _i-\omega _j|\ge \eta $$mini?j|?i-?j|?? for some $$\eta > 0$$?>0. We design a sublinear time randomized algorithm which, for any $$\epsilon \in (0,\eta /k]$$∈?(0,?/k], which takes $$O(k\log k\log (1/\epsilon )(\log k+\log (\Vert a\Vert _1/\Vert u \Vert _1))$$O(klogklog(1/∈)(logk+log(?a?1/???1)) samples of $$f(t)$$f(t) and runs in time proportional to number of samples, recovering $$\omega _j'\approx \omega _j$$?j???j and $$a_j'\approx a_j$$aj??aj such that, with probability $$\varOmega (1)$$Ω(1), the approximation error satisfies $$|\omega _j'-\omega _j|\le \epsilon $$|?j?-?j|≤∈ and $$|a_j-a_j'|\le \Vert u \Vert _1/k$$|aj-aj?|≤???1/k for all $$j$$j with $$|a_j|\ge \Vert u \Vert _1/k$$|aj|????1/k. We apply our model and algorithm to bearing estimation or source localization and discuss their implications for receiver array processing.

31.2: Proposal of the Perceptive Parameter Motion Picture Response Time (MPRT)

Abstract: The proposed Motion Picture Response Time (MPRT) measurement is designed to represent and quantify the visual perception of moving images across an AM-LCD screen MPRT measurement method takes into account three basic LCD panel characteristics: the capacitive-hold-type brightness variations, brightness level dependent transition times and a liquid crystal response time Further, MPRT figure is affected by a back light control method and video signal processing algorithms The proposed measurement method incorporates the synchronously moving test pattern and the evaluation of the pattern edge brightness changes