Emitterverbund-Rückkontaktsolarzellen für die industrielle Fertigung

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KRESS, Andreas, 2001. Emitterverbund-Rückkontaktsolarzellen für die industrielle Fertigung [Dissertation]. Konstanz: University of Konstanz

@phdthesis{Kress2001Emitt-8902, title={Emitterverbund-Rückkontaktsolarzellen für die industrielle Fertigung}, year={2001}, author={Kress, Andreas}, address={Konstanz}, school={Universität Konstanz} }

deu Kress, Andreas deposit-license Emitter wrap-through back contact solar cells for industrial production An industrially applicable low-cost process to produce emitter wrap-through back contact cells was developed. Back contact cells significantly facilitate the interconnection of solar cells to modules. This is a major contribution for reducing the costs of a photovoltaic device.<br />The investigated back contact cells are based on the emitter wrap-through (EWT) concept. Numerous tiny holes connect the front emitter with the contact grid at the cell rear. This electrical interconnection of front and rear side makes it possible to use low-cost silicon with a small life time of the minority carriers.<br />With this development the first process for EWT cells was published, which renounces completely on photolithographical steps and which nevertheless enables high efficiencies.<br />The reliable electrical isolation of p- and n-area at the cell rear is one of the most important steps within the production of an EWT cell. Because of the importance and on account of the enormous simplification induced by the development of a screen printable diffusion barrier, this process step was protected by a patent.<br />The result of three years of research and development is a industrially applicable process for the production process of low-cost back contact solar cells. Solar cells processed within this process with a cell area of 100 cm2 reached an efficiency of 15,8 This is the highest independently confirmed efficiency, which was published so far on EWT cells with screen printed metallization without any photolithographical steps. Two mini-modules of four polycrystalline and four monocrystalline EWT cells confirm the aesthetically appealing appearance of EWT back contact cells. 2011-03-24T17:51:30Z 2011-03-24T17:51:30Z application/pdf 2001 Emitterverbund-Rückkontaktsolarzellen für die industrielle Fertigung Kress, Andreas

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