Stefan W. Glunz

TL;DR: In this paper, a study on tunnel oxide passivated contacts formed by low-energy ion implantation into amorphous silicon (a-Si) layers and examines the influence of the ion species (P, B, or BF2) and the ion dose (5'×'1014'cm−2 to 1'× '1016' cm−2) on the subsequent high-temperature anneal on the passivation quality and junction characteristics using doublesided contacted silicon solar cells.

TL;DR: In this article, the external quantum efficiency of an upconverter silicon solar cell, both under monochromatic excitation and, for the first time in the context of silicon solar cells, under broad spectrum illumination, was investigated for the application to harvest solar energy.

TL;DR: In this article, the authors present experimental investigations on simple device structures to choose optimal laser parameters for selective emitter formation, which are used to fabricate high-efficiency oxide-passivated LFC solar cells that exceed 20% efficiency.

TL;DR: In this article, electrical shading losses due to recombination in the region of base busbar and fingers are analyzed using two-dimensional numerical device and network simulations, and the base doping dependence of these effects is investigated as well as the influence of the rear side passivation.

TL;DR: In this paper, Fraunhofer ISE used a low-temperature passivation stack of hydrogenated amorphous silicon and plasma-enhanced chemical vapor deposition (PECVD) silicon oxide to achieve an efficiency of up to 21.7%.