摘要:
The invention relates to a device for generating and detecting a transient magnetization of a sample (104). The device comprises means (102) for providing a static magnetic field (101) in a predetermined direction and with a predetermined intensity at a sample location, a transmission device for providing a transient magnetic field at the sample location and a receiving device for detecting the transient magnetization of the sample (104) at the sample location. According to the invention, an LC oscillator (103) forms both the transmission device and the receiving device. The oscillation frequency of the LC oscillator (103) is dependent on the value of the inductive element of the LC oscillator (103). Means are connected for controlling (106) the LC oscillator (103), the LC oscillator (103) and control means being sufficient to generate a transient magnetic field which is capable of deflecting a magnetization of the sample out of equilibrium and the period of the transient magnetic field can be limited to the sub-nanosecond range. The sample location is situated in the near field of the LC oscillator (103). In order to process an output voltage, modulation means (111, 113), analog to digital converters (112, 114) and means for digital data processing (106) are connected downstream of the LC oscillator (103) in a predetermined order. Provided on the means for digital data processing (106) are means for determining the spectral components of the magnetization of the sample, on the basis of a physical model of transient inductance and transient resistance of a coil. The device is also provided with means for outputting the spectral components.
摘要:
The invention relates to a device for generating and detecting a magnetization of a sample (103). The device at least comprises means (101) for providing a static magnetic field (102) of a predetermined direction and with a predetermined intensity at a sample location, a transmission device (104) for providing an additional magnetic field at the sample location and a receiving device (104) for detecting the magnetization of the sample (103). According to the invention, an assembly of at least two LC oscillators (104), the oscillation frequency of which being dependent on the value of an inductive element of the LC oscillators and which are frequency-synchronized by interconnection, can be used both as a transmission device (104) and as a receiving device (104) and also simultaneously as a transceiver (104). Means are connected for controlling the assembly (104), the assembly and control means (104) being sufficient to generate a magnetic field which is capable of deflecting a magnetization of the sample (103) out of equilibrium, and the sample location is situated in the near field of the assembly (104). In order to process an output voltage (105) of the assembly (104), demodulation means (106), analog to digital converters and means for digital data processing (107) are connected downstream of the device in a predetermined order. Provided on the means for digital data processing (107) are: means for determining the magnetization of the sample and the spin concentration of individual spectral components to be determined from said magnetization; and means for outputting said magnetization.
摘要:
The closest known thin-film solar module which is contact-connected on the rear side is based on two contact systems with different point contact-connections, the structuring of which, however, limits the quality of the absorber material used, with the result that pin configurations, in particular, can be achieved only with difficulty. For connection in series, the point contact-connections of the first and second contact systems must be exactly aligned with one another. In contrast, the thin-film solar cell module (00) according to the invention has a second contact system (13) having only one flat internal contact layer (16). The first contact system (12) has contact-connections (14) which are detected by an outer contact layer (15). For connection in series, the contact-connections (14) are connected to the internal contact area (16) in connection regions (21) between adjacent solar cell regions (09, 10) using series contact-connections (22). Outside the connection regions (22), the two contact systems (12, 13) are electrically insulated with respect to one another by the interposition of an insulation layer (17). The thin-film solar module (00) according to the invention can be implemented in a simple manner in all possible embodiments (pn or pin configuration, contact-connection on the rear side or front side, superstrate or substrate, integration of additional functional layers) without any alignment problems and yields the greatest possible degree of efficiency.
摘要:
The closest known thin-film solar module which is contact-connected on the rear side is based on two contact systems with different point contact-connections, the structuring of which, however, limits the quality of the absorber material used, with the result that pin configurations, in particular, can be achieved only with difficulty. For connection in series, the point contact-connections of the first and second contact systems must be exactly aligned with one another. In contrast, the thin-film solar cell module (00) according to the invention has a second contact system (13) having only one flat internal contact layer (16). The first contact system (12) has contact-connections (14) which are detected by an outer contact layer (15). For connection in series, the contact-connections (14) are connected to the internal contact area (16) in connection regions (21) between adjacent solar cell regions (09, 10) using series contact-connections (22). Outside the connection regions (22), the two contact systems (12, 13) are electrically insulated with respect to one another by the interposition of an insulation layer (17). The thin-film solar module (00) according to the invention can be implemented in a simple manner in all possible embodiments (pn or pin configuration, contact-connection on the rear side or front side, superstrate or substrate, integration of additional functional layers) without any alignment problems and yields the greatest possible degree of efficiency.