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AssigneeStichting Energieonderzoek Cenrum Nederland
InventorsYu Wu, Lambert Johan Geerligs, Johannes Adrianus Maria Van Roosmalen, Yuji Komatsu, Nicolas Guillevin
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Known photovoltaic cells with wrap through connections have output terminals of both polarities on its back surface, one of which is coupled to the front surface via the wrap through connections. The invented solar cell is manufactured by creating an emitter layer on the back surface. Electrode material is applied in mutually separate first and second areas on the back surface. The electrode material in the first area contacts the emitter. The second area covers a surrounding of a hole that provides for the connection on the back surface. The electrode material in the second area lies on the emitter and around the second area the emitter is interrupted by a trench. On the front surface a further area of electrode material is applied over the hole. If necessary the electrode material in the second area on the back surface is applied on a supporting surface that is substantially electrically isolated from current flowing laterally through the emitter layer underneath the first area.
A method of manufacturing a photovoltaic cell, the method comprising
A method according to any one of the preceding claims wherein the electrode material is applied in said first and second areas of electrode material are applied on the back surface by printing a paste comprising the electrode material.
A method according to any one of the preceding claims, comprising creating a layer of increased conductivity of the same conductivity type as the semiconductor body at the front surface prior to applying the electrode material in the further area.
A method according to any one of the preceding claims wherein said further area is applied in direct contact with the semi-conductor body, without a layer with increased doping of the first conductivity type relative to an underlying part of the semiconductor body between the electrode material of the further area and the semi-conductor body.
A photovoltaic cell, comprising
Dependencies are inferred from the claim text.