| 1. |
- Chuan Chen, Max, et al.
(författare)
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Low temperature activation of B implantation of Si subcell fabrication in III-V/Si tandem solar cells
- 2019
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Ingår i: Proceedings of the 36<sup>th</sup> EU PVSEC 2019. - : WIP. - 3936338604 ; , s. 764-768
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- In this work, we investigated the Si pre-amorphization implantation (PAI) assisted low temperatureannealing process to activate boron implantation in n-Si in a hydride vapor phase epitaxy (HVPE) reactor, which canbe used for the Si subcell fabrication in the III-V/Si tandem solar cells enabled by the corrugated epitaxial lateralovergrowth (CELOG). A uniform boron activation in Si and a low emitter sheet resistance of 77 /sq was obtained atannealing temperatures of 600-700°C. High-resolution x-ray diffraction was used to study the recrystallization ofamorphous silicon and the incorporation of boron dopants in Si. Hall measurements revealed p-type carrierconcentrations in the order of 1020 cm-3. The n-Si wafers with B implantation activated at 700°C by HVPE wereprocessed to solar cells and characterized by the standard light-current-voltage measurement under AM1.5 spectrumand external quantum efficiency measurements. The developed B implantation and low temperature activationprocesses are applied to the InP/Si seed template preparation for CELOG, on which CELOG GaInP over a Si subcellwith a direct heterojunction was demonstrated.
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| 2. |
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| 3. |
- Strömberg, Axel, et al.
(författare)
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Development of orientation-patterned gap growth on GaAs for nonlinear frequency conversion
- 2019
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Ingår i: Optics InfoBase Conference Papers. - : OSA - The Optical Society.
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Konferensbidrag (refereegranskat)abstract
- Quasi-phase-matched orientation-patterned GaP (OP-GaP) is an attractive technology for achieving mid-IR and terahertz (THz) radiation enabled by nonlinear frequency conversion, because of its low two-photon absorption (2PA) down to 1 µm. High crystalline quality of OP-GaP template and subsequent thick layer growth is required to exploit the benefit of low 2PA of GaP pumped with short wavelength lasers [1]. In this work, we present the development of heteroepitaxial growth of OP-GaP on wafer fused OP-GaAs template with high growth rate and good domain fidelity. The conductivity of the GaP grown on planar GaAs was investigated in the THz region.
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| 4. |
- Strömberg, Axel, et al.
(författare)
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Direct Heteroepitaxy of Orientation-Patterned GaP on GaAs by Hydride Vapour Phase Epitaxy for Quasi-Phase-Matching Applications
- 2019
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Ingår i: 2019 Compound Semiconductor Week, CSW 2019. - : Institute of Electrical and Electronics Engineers (IEEE).
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Konferensbidrag (refereegranskat)abstract
- Heteroepitaxial growth of orientation-patterned GaP on patterned GaAs template was developed by using hydride vapor phase epitaxy for quasi-phase-matching applications. We present the growth with well-defined periodic boundaries between (001) and (00 1) GaP domains. The GaP layer on planar GaAs was characterized by terahertz time-domain spectroscopy and the conductivity of GaP (0.16 S cm-1) was obtained in terahertz range.
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| 5. |
- Thrysoee, Lars, et al.
(författare)
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Management of newly diagnosed atrial fibrillation in an outpatient clinic settingpatients perspectives and experiences
- 2018
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Ingår i: Journal of Clinical Nursing. - : WILEY. - 0962-1067 .- 1365-2702. ; 27:3-4, s. 601-611
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Tidskriftsartikel (refereegranskat)abstract
- Aims and objectivesTo gain in-depth knowledge of patients experiences of the consultation processes at a multidisciplinary atrial fibrillation outpatient clinic in a university hospital in Denmark. BackgroundAtrial fibrillation is the most common cardiac arrhythmia associated with morbidity and mortality if not diagnosed and treated as recommended. Patients with newly diagnosed atrial fibrillation preferably should be managed in an outpatient setting which includes medical examination, patient education and decision-making on medical therapy. DesignThis is a qualitative study of 14 patients newly diagnosed with atrial fibrillation, ranging from asymptomatic patients, to those with mild to severe symptoms; they were all referred from general practitioners. MethodsData were generated in 2013-2015 using participant observation during each consultation, followed by individual interviews postconsultation. ResultsPatients were referred with limited information on AF and knowledge about the management consultation procedures. The consultations were performed in a professional way by the cardiologist as well as by the nurses with an emphasis on the medical aspects of atrial fibrillation. The understanding that atrial fibrillation is not a fatal disease in itself was very important for patients. At the same time, visiting the clinic was overwhelming, information was difficult to understand, and patients found it difficult to be involved in decision-making. ConclusionsThis study indicates that patients were uncertain on what AF was before as well as after their consultation. The communication was concentrated on the medical aspects of atrial fibrillation and visiting the clinic was an overwhelming experience for the patients. They had difficulty understanding what atrial fibrillation was, why they were treated with anticoagulation, and that anticoagulating was a lifelong treatment. Relevance for clinical practiceThis study demonstrates some lack of patient-centred care and an absence of tailored patient AF-related education. Furthermore, the study highlights the need for and importance of active patient involvement.
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