Si nanoparticle interfaces in Si/SiO2 solar cell materials

Autor:	Kilpelainen, S., Lu, Y. -W., Tuomisto, F., Slotte, J., Larsen, A. Nylandsted
Rok vydání:	2011
Předmět:	Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
Popis:	Novel solar cell materials consisting of Si nanoparticles embedded in SiO2 layers have been studied using positron annihilation spectroscopy in Doppler broadening mode, and photoluminescence. Two positron-trapping interface states are observed after high temperature annealing at 1100{\deg}C. One of the states is attributed to the (SiO2/Si bulk) interface and the other to the interface between the Si nanoparticles and SiO2. A small reduction in positron trapping into these states is observed after annealing the samples in N2 atmosphere with 5% H2. Enhanced photoluminescence is also observed from the samples following this annealing step. Comment: 4 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1106.1753 Zobrazit plný text záznamu View this record from Arxiv