Festkörperprobleme 18

Poly-crystalline silicon with columnar structure.- Solar cells based on nonsingle crystalline silicon.- Solar energy conversion by plant photosynthesis.- New approaches to energy conversion by alternative working fluids.- Lithium nitride, Li3N, an unusual ionic conductor.- Surface analysis: Aspects of atomic beam scattering, secondary ion mass spectroscopy and vibrational spectroscopies.- Diffraction in surfaces and interfaces.- The electronic structure of semiconductor surfaces.- to surface exciton polaritons.- Resonant Brillouin scattering in semiconductors.- Forced light scattering at laser-induced gratings-A method for investigation of optically excited solids.- Light emitting diodes for the visible spectrum.