Novel porous silicon backside light reflector for thin silicon solar cells
1998; Wiley; Volume: 6; Issue: 6 Linguagem: Inglês
10.1002/(sici)1099-159x(199811/12)6
ISSN1099-159X
AutoresJ. Zettner, M. Thoenissen, Th. Hierl, Rolf Brendel, Michael Schulz,
Tópico(s)Nanowire Synthesis and Applications
ResumoHigh efficiencies of thin crystalline Si solar cells grown on highly doped substrates have been reported. We propose porous Si layers located near the interface of the active layer and the substrate to introduce an optical confinement into these cells. We report on the experimental proof of the principle for this novel type of back-surface reflector. Spectral reflectance measurements agree well with computer simulations. On the basis of this agreement, we calculate the enhancement of short-circuit current densities due to porous reflectors for textured and non-textured cells. These simulations are of particular relevance for multicrystalline Si cells on foreign substrates and for space cells. Copyright © 1998 John Wiley & Sons, Ltd.
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