Abstract: A method for making a chalcopyrite-type compound includes reacting a reaction mixture in a solvent under a reaction temperature and a reaction pressure to form the chalcopyrite-type compound. The reaction mixture includes at least one first compound and at least one second compound. The first compound contains M1 and A. The reaction temperature ranges from 130-280° C. and the reaction pressure is greater than 3 Kg/cm2. The second compound contains M2 and A. M1 is selected from Cu, Au, Ag, Na, Li and K, M2 is selected from In, Ga, Al, Ti, Zn, Cd, Sn, Mg, and combinations thereof, and A is selected from S, Se, Te, and combinations thereof.

Abstract: A photovoltaic device includes: a back electrode; a transparent front electrode; a p-type semiconductor layer disposed between the transparent front electrode and the back electrode and made from a first semiconductor compound including M1, M2, and A1, the p-type semiconductor layer having a M1/M2 atomic ratio; and an n-type layered structure disposed between the p-type semiconductor layer and the transparent front electrode and cooperating with the p-type semiconductor layer to form a p-n junction therebetween. The n-type layered structure includes an n-type semiconductor layer made from a second semiconductor compound including M3, M4, and A2 and having a M3/M4 atomic ratio less than the M1/M2 atomic ratio and greater than 0.1 and less than 0.9.

Abstract: A method for making a chalcopyrite-type compound includes reacting a reaction mixture in a solvent under reflux condition to form the chalcopyrite-type compound. The reaction mixture includes at least one first compound and at least one second compound. The first compound contains M1 and A. The second compound contains M2 and A. M1 is selected from Cu, Au, Ag, Na, Li and K, M2 is selected from In, Ga, Al, Ti, Zn, Cd, Sn, Mg, and combinations thereof, and A is selected from S, Se, Te, and combinations thereof.

Abstract: A method for making a chalcopyrite-type compound includes: reacting a reaction mixture in a first solvent under reflux condition to form the chalcopyrite-type compound containing M1, M2, and A, in which M1 is selected from Cu, Au, Ag, Na, Li, and K, M2 is selected from In, Ga, Al, Ti, Zn, Cd, Sn, Mg, and combinations thereof, and A is selected from S, Se, Te, and combinations thereof; filtering the reaction mixture to obtain a crude cake; mixing the crude cake with a second solvent and a powder of a post-treatment material selected from S, Se, Te, and combinations thereof; and heating the mixture under reflux condition.

Abstract: A method for making a chalcopyrite-type compound includes reacting a reaction mixture in a solvent under reflux condition to form the chalcopyrite-type compound. The reaction mixture includes at least one first compound and at least one second compound. The first compound contains M1 and A. The second compound contains M2 and A. M1 is selected from Cu, Au, Ag, Na, Li and K, M2 is selected from In, Ga, Al, Ti, Zn, Cd, Sn, Mg, and combinations thereof, and A is selected from S, Se, Te, and combinations thereof.

Abstract: A method for making a chalcopyrite-type compound includes: reacting a reaction mixture in a first solvent under reflux condition to form the chalcopyrite-type compound containing M1, M2, and A, in which M1 is selected from Cu, Au, Ag, Na, Li, and K, M2 is selected from In, Ga, Al, Ti, Zn, Cd, Sn, Mg, and combinations thereof, and A is selected from S, Se, Te, and combinations thereof; filtering the reaction mixture to obtain a crude cake; mixing the crude cake with a second solvent and a powder of a post-treatment material selected from S, Se, Te, and combinations thereof; and heating the mixture under reflux condition.

Abstract: A noise-free low-power consumption wide voltage range DC and AC contactor and remote telephone control system is disclosed. A movable iron core is connected to a linkage. Another end of the linkage is connected to a micro switch. A normal close contact of the micro switch is serially connected to a magnetic coil and is parallel connected to an IC circuit and a retaining coil. A lower end of the movable iron coil is in the extent of the coil so that the magnetic coil attracts the movable iron core to move downwards to conduct the contactor and meanwhile, the magnetic coil will disconnect. The retaining coil is used to replaced the magnetic coil to attract the movable iron core. Since the power consumption of the retaining coil is small and thus the contactor is noise free, lower power consumption, and wide voltage range. Three voltage stages are selectable.

Abstract: An electronic circuit breaker which includes an automatic button or switch handle, a movable axle fitted in the automatic button, a movable copper mounted on a lower end of the movable axle, two movable silver contacts provided on two sides of a bottom of the movable copper, two stationary silver contacts positioned against the two movable silver contacts, a magnetic mechanism disposed between the two stationary silver contacts, the magnetic mechanism comprising a permanent magnet, two iron plates mounted at two sides of the permanent magnet, a reel mounted on one of the iron plates, a solenoid installed on the reel, a CPU connected with the solenoid, a primary circuitry conductive wire installed on the other one of the iron plates, a movable iron mounted on a bottom of the movable copper, a stationary magnet and CT connected in series with a primary circuitry of current-out and current-in electrodes, a movable magnet mounted above the stationary magnet, a short-circuit locking mechanism having an arm positio

Abstract: An electronic circuit breaker which includes an automatic button or switch handle, a movable axle fitted in the automatic button, a movable copper mounted on a lower end of the movable axle, two movable silver contacts provided on two sides of a bottom of the movable copper, two stationary silver contacts positioned against the two movable silver contacts, a magnetic mechanism disposed between the two stationary silver contacts, the magnetic mechanism comprising a permanent magnet, two iron plates mounted at two sides of the permanent magnet, a reel mounted on one of the iron plates, a solenoid installed on the reel, a CPU connected with the solenoid, a primary circuitry conductive wire installed on the other one of the iron plates, a movable iron mounted on a bottom of the movable copper, a stationary magnet and CT connected in series with a primary circuitry of current-out and current-in electrodes, a movable magnet mounted above the stationary magnet, a short-circuit locking mechanism having an arm positio

Abstract: A noise-free low-power consumption wide voltage range DC and AC contactor and remote telephone control system is disclosed. A movable iron core is connected to a linkage. Another end of the linkage is connected to a micro switch. A normal close contact of the micro switch is serially connected to a magnetic coil and is parallel connected to an IC circuit and a retaining coil. A lower end of the movable iron coil is in the extent of the coil so that the magnetic coil attracts the movable iron core to move downwards to conduct the contactor and meanwhile, the magnetic coil will disconnect. The retaining coil is used to replaced the magnetic coil to attract the movable iron core. Since the power consumption of the retaining coil is small and thus the contactor is noise free, lower power consumption, and wide voltage range. Three voltage stages are selectable.