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Showing result 6 - 10 of 14 essays matching the above criteria.
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6. Advanced rear contact design for CIGS solar cells
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : The current trend concerning the thinning of solar cell devices is mainly motivated by economic aspects, such as the cost of the used rare-earth elements, and by the requirements of emergent technologies. The introduction of ultra-thin absorber layers results in a reduction of used materials and thus contributes to a more cost-effective and time-efficient production process. READ MORE
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7. Fabrication of Tunneling Field Effect Transistors (TFETs) and the study of graphene
University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionenAbstract : After the discovery of graphene in 2004, a single layer of graphite, the assembly of 2D materials became a promising research area in solid state Physics. This thesis explores fabrication of 2D-heterostructures that aim to probe into graphene’s electronic structure with the Tunneling Field Effect Transistor (TFET). READ MORE
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8. Characterization of single InP Nanowire-based Avalanche Photodetectors
University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysikAbstract : Nanoscience is an emerging field of technology where the bottom-up fabrication techniques are utilized instead of the traditional top-down approaches for enhancing the performance of di erent optoelectronic devices. One such material is a semicon- ductor nanowire (NW) which holds immense potential in nanophotonic applications, such as solar cells, LEDs, lasers, sensors and photodetectors. READ MORE
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9. Effects of geometry on electronstates in semiconductor quantumpoint contacts
University essay from Linköpings universitet/Institutionen för fysik, kemi och biologiAbstract : Recent preliminary experiments appear to show that using the electron-electron interaction as a way to filter electrons through a quantum point contact (QPC) according to spin might be possible. The same experiments also show that the geometry of the constriction has an effect on the filtering. READ MORE
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10. Influence of Na doping on tunnelling rear contact passivation in Cu(In,Ga)Se2 solar cells
University essay from Uppsala universitet/Fasta tillståndets elektronikAbstract : In this thesis Cu(In,Ga)Se2 (CIGS) solar cells with different sodiumdoping of the CIGS absorber and varying Al2O3 rear surface passivationlayer thickness have been manufactured and electrically characterised. Baseline samples and samples without passivation were used asreferences for the passivated samples. READ MORE
