Hydrogen Passivation of B-O Defects in Czochralski Silicon

Passivation of copper in silicon by hydrogen

The structures and energies of model defects consisting of copper and hydrogen in silicon are calculated using the AIMPRO local-spin-density functional method. For isolated copper atoms, the lowest energy location is at the interstitial site with Td symmetry. Substitutional copper atoms are found to adopt a configuration with D2d symmetry. We conclude that the symmetry is lowered from Td due to...

Influence and passivation of extended crystallographic defects in polycrystalline silicon

2014 Influence and passivation of extended crystallographic defects are investigated in large grained polycrystalline silicon wafers and N+ P solar cells. When the mean grain size exceeds 1 mm, the influence of intragrain defects becomes predominant. It was found that the defects have not by themselves a noticeable recombination activity and that the segregation of impurities (oxygen...), could...

PECVD SINx INDUCED HYDROGEN PASSIVATION IN STRING RIBBON SILICON

To improve the bulk minority carrier lifetime in String Ribbon silicon, SiNx induced defect passivation during a post deposition anneal is investigated. Our results indicate that SiNx induced hydrogen passivation is very effective when the SiNx film is annealed in conjunction with a screen-printed AI layer on the back. In addition, it is found that controlled rapid cooling can be used to enhanc...

Effect of hydrogen passivation on the photoluminescence of Tb ions in silicon rich silicon oxide films

Improved amorphous/crystalline silicon interface passivation by hydrogen plasma treatment

plasma treatment A. Descoeudres, L. Barraud, Stefaan De Wolf, B. Strahm, D. Lachenal, C. Guérin, Z. C. Holman, F. Zicarelli, B. Demaurex, J. Seif, J. Holovsky, and C. Ballif Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Rue A.-L. Breguet 2, 2000 Neuchâtel, Switzerland Roth & Rau Switzerland SA, Rue de la...