摘要:
In this bypass-function added solar cell, a plurality of island-like p + regions (3), which is third regions, are formed at a boundary between a p-type region (1) and an n-type region layer (2) constituting a substrate (10) so that the p + regions project into the region (1) and the region (2) and are separated away from the surface of the substrate (10). Therefore, in this solar cell, unlike prior art counterparts, the insulating film for isolating the p + regions (3) and the n electrodes (7) constituting the np + diode from one another is no longer necessary, thus allowing a reduction in manufacturing cost. As a result, a bypass-function added solar cell with a bypass-diode function added thereto can be provided with low cost and by simple process.
摘要:
A solar cell comprises a crystalline Si substrate (1) of first type conductivity; a diffusion layer (2) of second type conductivity formed on a first main surface side of said substrate; an Si 1-x Ge x (0 1-x Ge x alloy layer. The intermediate semiconductor layer has an intermediate refractive index smaller than that of Si and has an energy bandgap larger than the energy bandgap of said Si 1-x Ge x .
摘要:
A solar cell includes an n type diffusion layer (2) formed on a first main surface side of a p - type monocrystalline Si substrate (1), and a p + type semiconductor layer (4) formed on a second main surface side of substrate (1) and having an energy bandgap narrower than that of Si and an impurity concentration higher than that of substrate (1).
摘要:
A solar cell includes a first semiconductor region (1) of a P type, a second semiconductor region (2) of an N type made in contact with the first semiconductor region (1) so as to form a PN junction, and a third semiconductor region (4) of a P⁺ type made in contact with both the first and second semiconductor regions (1, 2) and having a higher impurity concentration than that of the first semiconductor region (1).
摘要:
A silicon solar cell includes a p type silicon substrate (1), an n type diffusion layer (2) formed at a first main surface side of the substrate, and a p + layer (3a) of high doping concentration formed at a second main surface side of the substrate (1) by ion-implantation of group III element having an atomic radius greater than that of a Si atom. Aℓ is preferably used as the group III element.
摘要:
A solar cell includes an n type diffusion layer (2) formed on a first main surface side of a p - type monocrystalline Si substrate (1), and a p + type semiconductor layer (4) formed on a second main surface side of substrate (1) and having an energy bandgap narrower than that of Si and an impurity concentration higher than that of substrate (1).