The invention relates to electrical engineering, in particular, to the manufacturing technology of flexible high-temperature superconductors (HTS) with high critical current density in external magnetic field and to the method of manufacturing of said superconductors (tapes). The invention is applicable to industrial manufacturing of HTS wires with very high values of critical current density in magnetic fields over 1 Tesla at temperatures below 50 Kelvin, in particular, to industrial manufacturing of HTS wires intended for application in compact fusion reactors. Flexible high temperature superconductor is comprised of a substrate and a superconductor layer with RE.sub.1+2xBa.sub.2Cu.sub.3O.sub.7+3x overall composition comprised of a superconductor matrix of REBa.sub.2Cu.sub.3O.sub.7 composition and non-superconducting nanoparticles of RE.sub.2O.sub.3 composition, where x=0.05-0.15, RE is a rare earth element from the Y, Dy, Ho, Er, Tm, Yb and Lu group, whereas the concentration density of the said nanoparticles is at least 10.sup.16 nanoparticles/cm.sup.3. Method of manufacturing of the superconductor is comprised of pulsed laser deposition of superconductor material with RE.sub.1+2xBa.sub.2Cu.sub.3O.sub.7+3x overall composition, where x=0.05-0.15, RE is rare earth element from the Y, Dy, Ho, Er, Tm, Yb and Lu group, onto a substrate moving through the deposition zone and heated to a temperature of at least 800° C., whereas the deposition is performed using an ablated target made from multiphase sintered ceramics comprised of chemical elements that compose the superconductor material, at a deposition rate greater than 100 nm/s and at a temperature gradient in the deposition zone that ensures the deposition of the superconductor material without the formation of liquid phase. The invention allows for improvement of the properties of flexible high temperature superconductor by increasing its critical current in high magnetic fields and ensures simple and economic large scale production of said HTS conductor with improved properties.

A superconductor wire having a first HTS layer with a first cap layer in direct contact with a first surface of the first HTS layer and a second cap layer in direct contact with a second surface of the first HTS layer. There is a first lamination layer affixed to the first cap layer and a stabilizer layer having a first surface affixed to the second cap layer. There is a second HTS layer and a third cap layer in direct contact with a first surface of the second HTS layer and a fourth cap layer in direct contact with a second surface of the second HTS layer. There is a second lamination layer affixed to the fourth cap layer. The second surface of the stabilizer layer is affixed to the third cap layer and there are first and second fillets disposed along a edge of the laminated superconductor.

A method for fabricating a second generation high-temperature superconductor (2G-HTS) tape, including: (S1) depositing a superconducting thin film on a surface of a ductile metal substrate with a buffer layer; (S2) forming a micro-holes array pattern on a surface of the superconducting thin film by etching using a reel-to-reel dynamic femtosecond infrared laser etching system, where the micro-holes array pattern covers the superconducting thin film; (S3) depositing a superconducting thick film on the surface of the superconducting thin film; and (S4) depositing a silver protective layer and a copper stabilization layer on a surface of the superconducting thick film.

Provided is a superconducting wire. The superconducting wire comprises a substrate, a superconducting film on the substrate and a pinning center in the superconducting film. The superconducting film includes Y.sub.1-xRE.sub.xBCO and the pinning center has an additive of Ba.sub.2YNbO.sub.6.

The invention relates to a (RE,Y)-123 superconducting film containing mixed artificial pinning centers and a preparation method thereof, wherein a stoichiometric ratio of Cu in a parent phase of the (RE,Y)-123 superconducting film is 3.05-5; the mixed artificial pinning centers include a perovskite structure BaMO3 and a double-perovskite structure oxide Ba2(RE,Y)NO6; and a total mole percentage of Ba2(RE,Y)NO6 in the superconducting film is not less than 2.5%. The mixed artificial pinning centers form well-aligned column structures along the thickness direction in the superconducting film. The invention is intended not only to solve the problem that a single secondary phase cannot be well aligned along the thickness direction of (RE,Y)-123 when using the high-speed pulsed laser deposition technique, but also to effectively overcome the film thickness effect of the (RE,Y)-123 superconducting film containing mixed artificial pinning centers, hence the in-field current carrying capacity of the superconducting film is significantly improved in industrialized high-speed production.

Provided are a solar cell having a good conversion efficiency in which damage to a p-n junction structure is prevented when an antireflection film is removed, and a method of manufacturing such a solar cell.

An oxide superconducting wire includes a superconducting layer deposited on a substrate. The superconducting layer includes an oxide superconductor RE-Ba—Cu—O and artificial pinning centers ABO.sub.3, where RE is a rare earth element, A is Ba, Sr or Ca, and B is Hf, Zr, or Sn. In a TEM image of a cross-section of the superconducting layer, a standard deviation σ of an inclination angle of the artificial pinning center rods with respect to a cross-sectional direction of the superconducting layer is 6.13° to 11.73° and an average length of the artificial pinning center rods is 19.84 to 25.44 nm.

An oxide superconducting wire includes a superconducting layer deposited on a substrate. The superconducting layer includes an oxide superconductor RE-Ba—Cu—O and artificial pinning centers ABO.sub.3, where RE is a rare earth element, A is Ba, Sr or Ca, and B is Hf, Zr, or Sn. In a TEM image of a cross-section of the superconducting layer, a standard deviation σ of an inclination angle of the artificial pinning center rods with respect to a cross-sectional direction of the superconducting layer is 6.13° to 11.73° and an average length of the artificial pinning center rods is 19.84 to 25.44 nm.

A method for fabricating a second generation high-temperature superconductor (2G-HTS) tape, including: (S1) depositing a superconducting thin film on a surface of a ductile metal substrate with a buffer layer; (S2) forming a micro-holes array pattern on a surface of the superconducting thin film by etching using a reel-to-reel dynamic femtosecond infrared laser etching system, where the micro-holes array pattern covers the superconducting thin film; (S3) depositing a superconducting thick film on the surface of the superconducting thin film; and (S4) depositing a silver protective layer and a copper stabilization layer on a surface of the superconducting thick film.

A 2nd generation high temperature superconductor wire that prevents mechanical destruction from the wire edge due to slitting. A 2G HTS wire according to embodiments of the present invention has a structure that prevents mechanical destruction from the wire edge. This can be accomplished by forming a striation at or near the edge of the wire where the buffer and superconducting layers are removed to prevent any propagation of edge cracks from damaging the HTS wire.