Abstract: A compound semiconductor which has an improved thermoelectric performance index together with excellent electrical conductivity, and thus may be utilized for various purposes such as a thermoelectric conversion material of thermoelectric conversion devices, solar cells, and the like, and to a method for preparing the same.

Abstract: A chalcogen-containing compound of the following Chemical Formula 1 which exhibits excellent phase stability at a low temperature, particularly at a temperature corresponding to the driving temperature of a thermoelectric element, and also exhibits an excellent thermoelectric performance index through an increase in a power factor and a decrease in thermal conductivity, a method for preparing the same, and a thermoelectric element including the same: V1-xMxSn4Bi2Se7-yTey??[Chemical Formula 1] In the above Formula 1, V is a vacancy, M is an alkali metal, x is greater than 0 and less than 1, and y is greater than 0 and less than or equal to 1.

Abstract: The present invention relates to a novel chalcogen-containing compound that exhibits excellent phase stability even at a temperature corresponding to the driving temperature of a thermoelectric element, and has a high output factor and thermoelectric figure of merit, a method for preparing the same, and a thermoelectric element including the same.

Abstract: A chalcogen-containing compound of the following Chemical Formula 1 which exhibits excellent phase stability at a temperature corresponding to the driving temperature of a thermoelectric element, and also exhibits an excellent thermoelectric performance index (ZT) through an increase in a power factor and a decrease in thermal conductivity, a method for preparing the same, and a thermoelectric element including the same: V1-xMxSn4-yPbyBi2Se7-zTez??[Chemical Formula 1] In the above Formula 1, V is a vacancy, M is an alkali metal, x is greater than 0 and less than 1, y is greater than 0 and less than 4, and z is greater than 0 and less than or equal to 1.

Abstract: Disclosed are oxadiazole compounds and pharmaceutically acceptable salts thereof. The compounds and pharmaceutically acceptable salts thereof are specifically suitable for the treatment of neurological diseases such as epilepsy.

Abstract: An operating method of a host includes receiving a request for secure deletion of a first file stored in a storage system, providing an invalidation command to the storage system for invalidating data of the first file, providing an erase command to the storage system for erasing invalidated data included in the storage system, and performing a deletion operation, which is executable on an operating system of the host, on the first file which is deleted by the erase command.

Abstract: The present invention provides a novel compound semiconductor that has improved thermoelectric figure of merit as well as excellent electric conductivity, and thus, can be applied for various uses such as thermoelectric conversion material of a thermoelectric conversion device, a solar battery, and the like, and a method for preparing the same.

Abstract: The present invention provides a novel compound semiconductor that has improved thermoelectric figure of merit as well as excellent electric conductivity, and thus, can be applied for various uses such as thermoelectric conversion material of a thermoelectric conversion device, a solar battery, and the like, and a method for preparing the same.

Abstract: A novel compound semiconductor that can be used for a solar battery, a thermoelectric material, and the like, and use thereof. The novel compound semiconductor may be represented by the following Chemical Formula: NdxSyCo4Sb12-zQz, wherein Q is one or more selected from the O, Se, or Te, 0<x<0.2, 0<y?1, and 0<z<12.

Abstract: An operating method of a host includes receiving a request for secure deletion of a first file stored in a storage system, providing an invalidation command to the storage system for invalidating data of the first file, providing an erase command to the storage system for erasing invalidated data included in the storage system, and performing a deletion operation, which is executable on an operating system of the host, on the first file which is deleted by the erase command.