T. Brammer

Reduced light induced degradation of a-SiGe:H based pin solar cells by w-shape graded i-layer

Reinhard Carius, Helmut Stiebig, D. Lundszien, 2000 .

Optical Properties of Microcrystalline Thin Film Solar Cells

Helmut Stiebig, T. Brammer, H. Wagner, 2000 .

Defect density and recombination lifetime in microcrystalline silicon absorbers of highly efficient thin-film solar cells determined by numerical device simulations

Helmut Stiebig, T. Brammer, H. Stiebig, 2003 .

AFORS-HET, a numerical pc-program for simulation of heterojunction solar cells

W. Fuhs, Helmut Stiebig, Manfred Schmidt, 2004 .

Analysis of thin-film silicon solar modules

Bernd Rech, Helmut Stiebig, C. Zahren, 2004 .

The application of grating couplers in thin-film silicon solar cells

Helmut Stiebig, T. Brammer, J. Müller, 2006 .

17% efficient thin film silicon solar cell by liquid phase epitaxy

Andrew Blakers, Klaus Weber, A. J. Carr, 1994, Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC).