| 1. |
- Cavalli, Alessandro, et al.
(författare)
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High-Yield Growth and Characterization of < 100 > InP p-n Diode Nanowires
- 2016
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Ingår i: Nano letters (Print). - : American Chemical Society (ACS). - 1530-6984 .- 1530-6992. ; 16:5, s. 3071-3077
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Tidskriftsartikel (refereegranskat)abstract
- Semiconductor nanowires are nanoscale structures holding promise in many fields such as optoelectronics, quantum computing, and thermoelectrics. Nanowires are usually grown vertically on (111)-oriented substrates, while (100) is the standard in semiconductor technology. The ability to grow and to control impurity doping of (100) nanowires is crucial for integration. Here, we discuss doping of single-crystalline < 100 > nanowires, and the structural and optoelectronic properties of p-n junctions based on < 100 > InP nanowires. We describe a novel approach to achieve low resistance electrical contacts to nanowires via a gradual interface based on p-doped InAsP. As a first demonstration in optoelectronic devices, we realize a single nanowire light emitting diode in a < 100 >-oriented InP nanowire p-n junction. To obtain high vertical yield, which is necessary for future applications, we investigate the effect of the introduction of dopants on the nanowire growth.
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| 2. |
- Lehtveer, Mariliis, 1983, et al.
(författare)
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Using Resource Based Slicing to Capture the Intermittency of Variable Renewables
- 2016
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- As the share of variable renewables – wind and solar PV – is expected to grow significantly in coming decades, it has become increasingly important to account for their intermittency in large scale energy models that are used to explore long term energy futures. In this paper we propose and evaluate one method for doing so, namely, resource based slicing. In addition we implement storage based on possible transitions between slices which allows us to explore new dynamics between intermittent generation and electricity storage in large scale models. Our preliminary results show that this approach manages to capture many aspects introduced by variable renewables such as need for flexible generation capacity and curtailment at high penetration levels. We show that adding electricity storage to the system will favour solar power but has only a minor effect on wind and nuclear power.
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