Kn 01 Plasma Spectrometric Instrumentation: Not for Just Atoms Anymore

KN 05 THE IMPORTANCE OF AEROSOL TRANSPORT IN LASER ABLATIONINDUCTIVELY COUPLED PLASMA –MASS SPECTROMETRY D. Günther, J. Koch, I. Kroslakova, J. Pisonero and M. Wälle ETH Zürich, Laboratory of Inorganic Chemistry, HCI Hönggerberg, G113, CH-8093 Zürich, Switzerland [email protected] The capabilities of laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) have been significantly improved within the last couple of years and the increasing number of applications demonstrate its importance for elemental analysis and isotope ratio determinations in geology, material science, forensics or gemology. Besides the success of this technique, a number of processes are still unknown, which includes the transport efficiency of aerosols, the vaporization and ionization properties of particles within the ICP and the ion extraction yield into the MS. All these parameters have a significant influence on non-matrix matched calibration capabilities, precision, accuracy and limits of detection. This presentation will focus on aerosol formation and aerosol distribution when using femtosecond and nanosecond laser ablation for aerosol generation. In collaboration with ISAS in Dortmund, aerosol extraction and transportation efficiencies and preliminary results addressing mass balance in LA-ICP-MS will be presented. In addition, mass load induced matrix effects have been previously reported for a single glass matrix using single hole drilling. These studies were extended to scanning/raster ablation, where the amount of material and the particle size distribution remain more constant over time. Mass load effects for these two types of sampling will be compared. Furthermore, the role of the gas composition of the plasma to reduce the degree of such matrix effects will also be discussed. Tu01 DETECTION OF TRACE IMPURITIES IN CIGS-SOLAR CELLS BY LASERABLATION-ICP-MS Rainer Dargel, Shan Jiang, Frank Heinemeyer, Mark Köntges, Carla Vogt University of Hannover, Inst. for Inorganic Chemistry, Dept. for Analytical Chemistry, Callinstr. 9, Hannover, Germany, 30167 Inst. for Solar Energy Research (ISFH), Am Ohrberg 1, Emmerthal, Germany, 31860 Email: [email protected] With the increasing world-wide demand for energy, conventional energy sources running short and the limited capacity of the ecosystem for greenhouse gases photovoltaics is widely regarded as one of the key technologies for future power generation. Currently over 85 percent of the current production of solar cells base on silicium technology. However, due to limited silicium resources and thus increasing prices thin film solar cells have gained considerable attention. Their functional layers are only a few microns thick, which combines lower weight with potentially lower manufacturing costs. Among thin film cells those based on Cu1-x(In,Ga)xSe2 absorbers yield the highest efficiencies with 19,2%. A novel approach utilizes substrates made of flexible and light fibre glass fabrics rather than rigid and comparably heavy glass substrates, which allows the utilization in several new applications such as the installation on curved walls and less sturdy roofs, for example on sheeted storage halls. The extreme waviness of this material however requires an additional layer of varnish to reduce the surface roughness and ensure homogenous thicknesses of the functional layers.