摘要:
There is disclosed a photoelectric conversion device which is manufactured by depositing numerous crystalline semiconductor particles of one conductivity type on a substrate having an electrode of one side to join the crystalline semiconductor particles to the substrate, interposing an insulator among the crystalline semiconductor particles, forming a semiconductor layer of the opposite conductivity type over the crystalline semiconductor particles, and connecting an electrode to the semiconductor layer of the opposite conductivity type, in which the insulator comprises a mixture or reaction product of polysiloxane and polycarbosilane. The insulator interposed among the crystalline semiconductor particles is free from defects such as cracking and peeling, so that a low cost photoelectric conversion device with high reliability can be provided.
摘要:
A photovoltaic conversion device has a substrate 1 as a lower electrode having a first region 31 and a second region 32 adjacent to the first region, a lot of semiconductor particles 20 joined to the first region 31, an insulator 4 formed between the semiconductor particles 20 on the substrate 1 in the first region 31 and on the substrate 1 in the second region 32, a transparent conductive layer 5 as an upper electrode formed so as to cover the upper part of the semiconductor particles 20 in the first region 31 and the insulator 4 in the first region 31, and a collecting electrode formed of a finger electrode 15 arranged on the transparent conductive layer 5 in the first region 31 and a bus bar electrode 16 which is arranged in the second region 32 and connected to the finger electrode 15. By making the thickness of the insulator 4 in the second region 32 larger than that of the insulator 4 in the first region, even if generated photocurrents concentrate on the bus bar electrode 16, insulating properties between the substrate 1 and the transparent conductive layer 5 can be ensured stably, thereby to achieve high photovoltaic conversion efficiency.
摘要:
In a method for manufacturing a granular silicon crystal by allowing silicon melt in a crucible to be granularly discharged and fallen from a nozzle part composed of silicon carbide or silicon nitride, and cooling and solidifying the granular silicon melt during falling, a carbon source is added when the nozzle part is composed of silicon carbide, and a nitrogen source is added when the nozzle part is composed of silicon nitride, to the silicon melt in the crucible. Thereby, melt droplets of uniform size can be generated, so that granular silicon crystals having narrow variations in particle size can be manufactured at high productivity and superior reproducibility.
摘要:
In a method for manufacturing a granular silicon crystal by allowing silicon melt in a crucible to be granularly discharged and fallen from a nozzle part composed of silicon carbide or silicon nitride, and cooling and solidifying the granular silicon melt during falling, a carbon source is added when the nozzle part is composed of silicon carbide, and a nitrogen source is added when the nozzle part is composed of silicon nitride, to the silicon melt in the crucible. Thereby, melt droplets of uniform size can be generated, so that granular silicon crystals having narrow variations in particle size can be manufactured at high productivity and superior reproducibility.
摘要:
A conductive paste for a photovoltaic cell and a method for producing the photovoltaic cell are disclosed. The conductive paste includes a silver powder, glass frit and a sintering inhibitor that suppresses sintering of the silver powder. The sintering inhibitor contains at least one substance selected from aluminum oxide, silicon oxide and silicon carbide. The method includes forming a first anti-reflective layer on a first region of a main surface of a semiconductor substrate; forming a second anti-reflection layer on a second region of the main surface which is different from the first region; coating the electrically conductive paste onto the second anti-reflective layer on the second anti-reflection layer; and forming a surface electrode in the second region by reacting the second anti-reflection layer with the electrically conductive paste at an elevated temperature.
摘要:
A solar cell element is disclosed. The solar cell element comprises a semiconductor substrate and electrodes. The semiconductor substrate with a first and second main surface comprises a body and a first layer. The electrodes comprise first electrodes on the first layer and second electrodes on the second main surface. At least one of the first electrodes and the second electrodes comprises silver, copper and nickel as a main component. A method for manufacturing a solar cell element is disclosed. An electrically conductive paste containing silver, copper and nickel is prepared. The electrically conductive paste is applied on the semiconductor substrate. The electrically conductive paste is fired to form the solar cell element.
摘要:
A constant linear velocity disk rotating apparatus for rotating a disk storing data recorded therein substantially at fixed linear recording speed detects a signal recorded in the disk by signal detecting means, obtains a control signal through the comparison of phase of the signal detected from the disk and that of a reference signal by phase comparing means, and controls the rotating speed of the disk on the basis of the control signal. To maintain the sensitivity of phase error detection which tends to vary in proportion to the radial position r of the signal detecting means relative to the disk at a fixed level, the gain of the phase control system is regulated in inverse proportion to the radial position r of the signal detecting means according to the output of detecting means which detects the rotating frequency or period of the disk. The control signal provided by the phase comparing means is applied to disk driving means after regulating the gain thereof by varying the duty factor in transmitting the control signal to the disk driving means.
摘要:
An optical disc player for optically recording the video information or audio information onto a recording medium or optically reproducing the recorded information. The disc player includes a search unit for searching an information track having no signals recorded thereon prior to additionally recording an information signal on the unrecorded track. The search unit has a level detection circuit for detecting the energy value of the light reflected by the recording medium or an RF signal detection circuit for detecting the RF signal component. When the reflected light energy exceeds a predetermined value or the RF signal component is not detected, the search unit regards the track as a track having no signals recorded thereon, the search operation for a track having no signals being terminated and information can be recorded of the track having no signals recorded thereon.
摘要:
A mobile wireless communication system includes: a wireless base station that controls, for each timing, a transmission state of a radio wave repeatedly transmitted at timings that respectively differ; and a plurality of wireless mobile devices that are respectively allocated one of the timings, receive the radio wave at the timing allocated, and based on the radio wave received, respectively detect a connection destination. The wireless base station controls the transmission state of the radio wave transmitted at an arbitrary timing to be any one of a complete suspension state of continuously suspending transmission, a discontinuous suspension state of discontinuously suspending transmission, and an invalid information transmission state of transmitting invalid information.
摘要:
A control apparatus for controlling an optical video disk player capable of optical recording and reproduction of video and/or audio information on a recording medium by a light beam. The control apparatus comprises a tracking failure detection circuit detecting failure of the light beam to accurately track along a track formed on the recording medium, and a light beam control signal generator circuit reducing the energy of the light beam in response to the detection of the tracking failure by the tracking failure detection circuit, whereby recording of information on the recording medium is inhibited in the event of occurrence of a tracking error.