Abstract:
The present invention relates to a highly efficient solar cell having a novel structure and superior stability, and which can be mass-produced from an inexpensive material for enabling the easy commercial availability thereof. More particularly, the solar cell of the present invention comprises: a porous inorganic electron-transporting layer containing metal oxide particles; a light absorber containing inorganic semiconductors; and an organic hole-transporting layer containing an organic photovoltaic material.
Abstract:
Disclosed herein is an automatic food refuse disposal apparatus. The automatic food refuse disposal apparatus detects the amount of food refuse held in a grinding container (20), and grinds the food refuse for a preset period when the amount of food refuse held in the grinding container has reached a predetermined amount. Further, the apparatus detects the amount of ground food refuse collected in a collecting container (30), thus indicating the time when the collecting container must be emptied. The present invention does not require a user to perform a special action during the disposal of the food refuse, and dries and sterilizes the food refuse collected in the collecting container, thus preventing an offensive odor from being emitted, in addition to being very hygienic.
Abstract:
The present invention relates to a photoelectric device having a novel structure which provides high efficiency, enables mass production through the use of low-priced raw materials, and can easily commercialize the photoelectric device. More specifically, the present invention relates to a photoelectric device including a surface of an inorganic semiconductor light absorber for receiving sunlight and generating photoelectrons and photoholes, and a dithiol pincer-shaped bipolar polarization layer for forming a partial or complete coating layer on a metal oxide electron carrier. The photoelectric device according to the present invention is characterized in that a photoelectric device having high efficiency can be manufactured by effectively transferring a charge carrier generated from the inorganic semiconductor light absorber to the metal oxide electron carrier.
Abstract:
A method for determining a location of a mobile device with reference to locations of a plurality of reference devices is disclosed. The mobile device receives ambient sound and provides ambient sound information to a server. Each reference device receives ambient sound and provides ambient sound information to the server. The ambient sound information includes a sound signature extracted from the ambient sound. The server determines a degree of similarity of the ambient sound information between the mobile device and each of the plurality of reference devices. The server determines the location of the mobile device to be a location of a reference device having the greatest degree of similarity.
Abstract:
The present invention relates to a method for manufacturing a significantly high efficient solar cell having a novel structure and superior stability, and which can be mass-produced from an inexpensive material for enabling the easy commercial availability thereof. More particularly, the method of the present invention comprises the following steps: (a) depositing slurry containing metal oxide particles and heat-treating the slurry to form a porous electron-transporting layer; (b) forming inorganic semiconductors on the surfaces of the metal oxide particles of the porous electron-transporting layer; and (c) impregnating the porous electron-transporting layer having the organic semiconductors formed thereon with a solution containing an organic photovoltaic material so as to form a hole-transporting layer.
Abstract:
Disclosed herein is a food refuse disposal apparatus. The food refuse disposal apparatus includes gear assemblies (10, 20) which grind and discharge food refuse. Each of the gear assemblies includes a feeding screw (11, 21) to enhance refuse feeding capacity. Due to the enhanced refuse feeding capacity, it is possible to arrange the gear assemblies upright. Thus, such a construction allows food refuse to be easily ground and fed, in addition to efficiently separating water from the food refuse.