@inproceedings{09907ac074af4def805124d538bfaab3,
title = "Macroporous silicon as an absorber for thin heterojunction solar cells",
abstract = "Meso- and macroporous silicon is widely studied for several applications in photovoltaic devices. We investigate macroporous silicon as an absorber for thin-film silicon solar cells. Here we review the progress of our work. We demonstrate the separation of 85 × 85 mm2-sized macroporous silicon layer from a monocrystalline n-type Cz silicon wafer. The measured optical absorption of a 26 μm thick macroporous silicon layer allows for a short-circuit current density of 37.6 mA cm-2. We measure an effective carrier lifetime of up to (38.8 ± 3.9) μs for (33 ± 2) μm thick surface passivated macroporous silicon layer. We use an analytical model to determine average surface recombination velocity S= (10 ± 2) cm s-1 for the MacPSi layer. We prepare macroporous silicon heterojunction solar cells with an energy-conversion efficiency of 7.2 %.",
keywords = "free standing, heterojunctions, kerf-free, layer transfer, macroporous silicon, monocrystalline, porous silicon, thin-film silicon",
author = "Marco Ernst and Rolf Brendel and Rafel Ferr{\'e} and Harder, {Nils Peter} and Sarah Kajari-Schr{\"o}der",
year = "2012",
doi = "10.1109/PVSC.2012.6317781",
language = "English",
isbn = "9781467300643",
series = "Conference Record of the IEEE Photovoltaic Specialists Conference",
pages = "1040--1045",
booktitle = "Program - 38th IEEE Photovoltaic Specialists Conference, PVSC 2012",
note = "38th IEEE Photovoltaic Specialists Conference, PVSC 2012 ; Conference date: 03-06-2012 Through 08-06-2012",
}