Title
Inkjet printing of isolation layers for back-contacted silicon- heterojunction solar cells
Date Issued
01 December 2011
Access level
metadata only access
Resource Type
conference paper
Author(s)
Reinhold I.
Mingirulli N.
Haschke J.
Voit W.
Zapka W.
Helmholtz-Zentrum Berlin
Abstract
For wafer based silicon solar cells, the combination of amorphous/crystalline silicon (a-Si:H/c-Si) heterojunction emitters (SHJ) [1] and back-contacted back-junction solar cell concepts (BCBJ) [2] offer a very high efficiency potential of around 24%. Stangl et al. proposed a relatively simple and therefore attractive cell concept comprising a two level metallization isolated by an insulation layer. The emitter layer consisting of doped amorphous silicon with a thickness of several nm and the emitter metallization layer comprise circular openings where the back surface field layers and the respective metallization establish contact to the absorber. In this work the potential of inkjet printing for the deposition of the isolation layer with photoresists or other polymeric fluids is evaluated. Challenges are the required placement precision and the feature size. In order to produce circular openings of the order 10 μm, the drop formation has to be optimized, and the ink spreading on both surfaces - on the aluminum emitter and on the silicon wafer substrate - have to be controlled. ©2011 Society for Imaging Science and Technology.
Start page
651
End page
654
Language
English
OCDE Knowledge area
Ingeniería del Petróleo, (combustibles, aceites), Energía, Combustibles
Scopus EID
2-s2.0-84860774374
ISBN of the container
9780892082964
Conference
International Conference on Digital Printing Technologies: 27th International Conference on Digital Printing Technologies, NIP27 and 7th International Conference on Digital Fabrication 2011
Sources of information: Directorio de Producción Científica Scopus