Method for preparing a compound-based film for use in a solar cell by photo-electrodeposition

    公开(公告)号:US10950742B2

    公开(公告)日:2021-03-16

    申请号:US16343807

    申请日:2017-11-01

    Abstract: A method for preparing a film of a CIS semiconductor compound overcoated by a color layer includes preparing an electrolyte solution by mixing precursors of film constituents including Cu, In, and Se with a solvent; configuring an electrodeposition circuit by connecting an electrochemical cell comprising the electrolyte solution, a working electrode, and a counter electrode to a voltage or current supply device; disposing a photomask having the predetermined pattern on the working electrode; producing the film through the photomask on a surface of the working electrode by applying a reduction voltage or current; disposing a light source to emit light toward the photomask; and photoelectrically depositing the film on the surface of the working electrode at least in the predetermined pattern while illuminating light through the photomask; and forming a color layer of CuSe at least in the predetermined pattern on the film employed as a working electrode using photo-electrodeposition.

    BIOSIGNAL-BASED AVATAR CONTROL SYSTEM AND METHOD

    公开(公告)号:US20210055794A1

    公开(公告)日:2021-02-25

    申请号:US16698380

    申请日:2019-11-27

    Abstract: A biosignal-based avatar control system according to an embodiment of the present disclosure includes an avatar generating unit that generates a user's avatar in a virtual reality environment, a biosignal measuring unit that measures the user's biosignal using a sensor, a command determining unit that determines the user's command based on the measured biosignal, an avatar control unit that controls the avatar to perform the command, an output unit that outputs an image of the avatar in real-time, and a protocol generating unit for generating a protocol that provides predetermined tasks, and determines if the avatar performed the predetermined tasks. According to an embodiment of the present disclosure, it is possible to provide feedback in real-time by understanding the user's intention through analysis of biosignals and controlling the user's avatar in a virtual reality environment, thereby improving the user's brain function and motor function.

    Sound absorption device and Method of manufacturing the same

    公开(公告)号:US20210043182A1

    公开(公告)日:2021-02-11

    申请号:US16937582

    申请日:2020-07-24

    Abstract: A sound absorption device and a method of manufacturing the same are provided. The sound absorption device includes a sound absorbing panel including first elements, second elements, third elements, and fourth elements arranged in different directions, wherein a cross-section of at least one of the first through fourth elements has a distorted circular shape, a distorted polygonal shape, or a distorted elliptical shape.

    Optical phase shifter and optical switch device using ferroelectric material

    公开(公告)号:US10901246B2

    公开(公告)日:2021-01-26

    申请号:US16528633

    申请日:2019-08-01

    Abstract: An optical phase shifter according to an embodiment for achieving the object of the present disclosure includes a first semiconductor layer formed on a substrate, a second semiconductor layer having opposite polarity to the first semiconductor layer, an insulating layer formed between the first semiconductor layer and the second semiconductor layer, and including ferroelectrics, a first electrode connected to the first semiconductor layer, and a second electrode connected to the second semiconductor layer. According to an embodiment, the introduction of ferroelectric materials to a semiconductor-insulator-semiconductor (SIS) optical phase shifter brings about improvement in charge collection efficiency resulting from the negative capacitance effect, thereby achieving higher phase modulation efficiency and lower power consumption. Additionally, it is possible to realize a new structure of optical switch or modulator device through design changes of the type of ferroelectrics and the structural variables.

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