Thin layered solar module having a composite wafer structure
OwnerMatthias Doech, Walter Stetterinventors
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Abstract
A thin layered solar module having a plurality of serially connected thin layer solar cells for producing photovoltaic energy is described. The module has two substrates which are interconnected by an adhesive layer. Each solar cell has a layer structure arranged between the two substrates, having a first electrode layer, a second electrode layer and a semi-conductor layer which is arranged between both electrode layers. The semi-conductor layer forms a pn-junction and is doped with a doping material. The adhesive layer has a certain amount of doping material such that the doping material from the semi-conductor layer is prevented from diffusing into the adhesive layer.
Claims17
A thin-film solar module for photovoltaic energy production, comprising:
- two substrates bonded to each other by an adhesive layer, and
- a plurality of serially connected thin-film solar cells, wherein
- each thin-film solar cell has a layer structure disposed between the two substrates, comprising a first electrode layer, a second electrode layer, and at least one semiconductor layer disposed between the first and second electrode layer, wherein the at least one semiconductor layer forms a pn-junction and is doped with a dopant, with the adhesive layer having the dopant in such an amount that diffusion of the dopant from the at least one semiconductor layer into the adhesive layer is prevented.
The thin-film solar module according to claim 20, wherein:
- A=—(CH2—CHR1)n and B=—((R3—)C(—R2)(—CH2))m, where
- R1═H, CH3, or CH2—CH3,
- R2═COONa, —CH2—COONa, SO3Na, or —H2CSNa
- R3═H, CH3, CH2—CH3, or phenyl, and
- where n, m>10.
The thin-film solar module according to claim 20, wherein the copolymers of the formula A-B contain the component B in an amount of 5 to 30 wt-%, in particular 10 to 20 wt-%.
Dependencies are inferred from the claim text.