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Study of photocurre...
Study of photocurrent generation in InP nanowire-based p(+)-i-n(+) photodetectors
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- Jain, Vishal (author)
- Högskolan i Halmstad,Lund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Tillämpad matematik och fysik (MPE-lab),Solid State Physics and the Nanometer Structure Consortium, Lund University, Lund, Sweden,Nanovetenskap
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- Nowzari, Ali (author)
- Lund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Lund University, Lund, Sweden,Solid State Physics and the Nanometer Structure Consortium
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- Wallentin, Jesper (author)
- Lund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Lund University, Lund, Sweden,Solid State Physics and the Nanometer Structure Consortium
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- Borgström, Magnus (author)
- Lund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Lund University, Lund, Sweden,Solid State Physics and the Nanometer Structure Consortium
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- Messing, Maria (author)
- Lund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Lund University, Lund, Sweden,Solid State Physics and the Nanometer Structure Consortium
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- Asoli, Damir (author)
- Ideon Science Park, Sol Voltaics AB, Lund, Sweden
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- Graczyk, Mariusz (author)
- Lund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Lund University, Lund, Sweden,Solid State Physics and the Nanometer Structure Consortium
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- Witzigmann, Bernd (author)
- University of Kassel, Kassel, Germany,Department of Computational Electronics and Photonics
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- Capasso, Federico (author)
- Harvard University, Cambridge, Massachusetts, USA,School of Engineering and Applied Sciences
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- Samuelson, Lars (author)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Lund University, Lund, Sweden,Solid State Physics and the Nanometer Structure Consortium
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- Pettersson, Håkan (author)
- Högskolan i Halmstad,Lund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Tillämpad matematik och fysik (MPE-lab),Nanovetenskap
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(creator_code:org_t)
- 2015-01-07
- 2014
- English.
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In: Nano Reseach. - Beijing & Berlin/Heidelberg : Springer Science and Business Media LLC. - 1998-0124 .- 1998-0000. ; 7:4, s. 544-552
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Abstract
Subject headings
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- We report on electrical and optical properties of p(+)-i-n(+)photodetectors/solar cells based on square millimeter arrays of InP nanowires (NWs) grown on InP substrates. The study includes a sample series where the p(+)-segment length was varied between 0 and 250 nm, as well as solar cells with 9.3% efficiency with similar design. The electrical data for all devices display clear rectifying behavior with an ideality factor between 1.8 and 2.5 at 300 K. From spectrally resolved photocurrent measurements, we conclude that the photocurrent generation process depends strongly on the p(+)-segment length. Without a p(+)-segment, photogenerated carriers funneled from the substrate into the NWs contribute strongly to the photocurrent. Adding a p(+)-segment decouples the substrate and shifts the depletion region, and collection of photogenerated carriers, to the NWs, in agreement with theoretical modeling. In optimized solar cells, clear spectral signatures of interband transitions in the zinc blende and wurtzite InP layers of the mixed-phase i-segments are observed. Complementary electroluminescence, transmission electron microscopy (TEM), as well as measurements of the dependence of the photocurrent on angle of incidence and polarization, support our interpretations.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology -- Nano-technology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Matematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Annan medicin och hälsovetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Other Medical and Health Sciences (hsv//eng)
Keyword
- nanophotonics
- nanowires
- infrared (IR)
- photodetectors
- solar cells
- photodetectors
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Jain, Vishal
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Nowzari, Ali
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Wallentin, Jespe ...
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Borgström, Magnu ...
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Messing, Maria
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Asoli, Damir
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Graczyk, Mariusz
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Witzigmann, Bern ...
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Capasso, Federic ...
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Samuelson, Lars
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Pettersson, Håka ...
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Nano technology
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and Nano technology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Mathematics
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Other Medical an ...
- Articles in the publication
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Nano Reseach
- By the university
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Lund University
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Halmstad University