Bifacial n-Type Cells With >20% Front-Side Efficiency for Industrial Production

Author

Boscke, T.S. ; Kania, Dariusz ; Helbig, A. ; Schollhorn, Claus ; Dupke, M. ; Sadler, P. ; Braun, Martin ; Roth, T. ; Stichtenoth, Daniel ; Wutherich, Tobias ; Jesswein, R. ; Fiedler, D. ; Carl, Ralph ; Lossen, J. ; Grohe, Andreas ; Krokoszinski, Hans-Joac

Author_Institution

Bosch Solar Energy, Arnstadt, Germany

Volume

3

Issue

2

fYear

2013

fDate

Apr-13

Firstpage

674

Lastpage

677

Abstract

We present our progress in the development of monocrystalline n-type cell for industrial manufacturing. Our cell uses a homogeneous boron front-side emitter and a phosphorous back-surface field, which are contacted with screen-printed grids on both sides of the cell. Our current process allows the stable manufacturing of 156 × 156 mm² cells with a front-side efficiency of around 20% on industrial equipment. Besides the inherent immunity to light induced degradation of the n-type substrate, this cell type offers the opportunity to significantly enhance the energy yield by the employment of a bifacial module technology. First field tests indicate the potential of more than 10% additional current gain, challenging the energy yield ofmore complex monofacial cells of even higher efficiency.

Keywords

boron; phosphorus; solar cells; bifacial n-type cells; homogeneous boron front-side emitter; industrial manufacturing; industrial production; monocrystalline n-type cell; n-type substrate; phosphorous back-surface field; Current measurement; Lighting; Photovoltaic cells; Photovoltaic systems; Production; Substrates; Bifacial; n-type; screen-printed solar cell;

fLanguage

English

Journal_Title

Photovoltaics, IEEE Journal of

Publisher

ieee

ISSN

2156-3381

Type

jour

DOI

10.1109/JPHOTOV.2012.2236145

Filename

6459517