Search: onr:"swepub:oai:DiVA.org:hh-18867" >
Electrical and opti...
Electrical and optical properties of InP nanowire ensemble p(+)-i-n(+) photodetectors
-
- Pettersson, Håkan, 1962- (author)
- Högskolan i Halmstad,Tillämpad matematik och fysik (MPE-lab)
-
- Zubritskaya, Irina (author)
- Högskolan i Halmstad,Tillämpad matematik och fysik (MPE-lab)
-
- Nghia, Ngo Tuan (author)
- Högskolan i Halmstad,Tillämpad matematik och fysik (MPE-lab)
-
show more...
-
- 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,Solid State Physics and the Nanometer Structure Consortium, Lund University, Lund, Sweden
-
- 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,Solid State Physics and the Nanometer Structure Consortium, Lund University, Lund, Sweden
-
- Storm, Kristian (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,Solid State Physics and the Nanometer Structure Consortium, Lund University, Lund, Sweden
-
- Landin, Lars, 1948- (author)
- Högskolan i Halmstad,Tillämpad matematik och fysik (MPE-lab)
-
- Wickert, Peter (author)
- Sol Voltaics AB, Ideon Science Park, Lund, Sweden
-
- Capasso, Federico (author)
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, USA
-
- Samuelson, Lars (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,Solid State Physics and the Nanometer Structure Consortium, Lund University, Lund, Sweden
-
show less...
-
(creator_code:org_t)
- 2012-03-14
- 2012
- English.
-
In: Nanotechnology. - Bristol, UK : Institute of Physics Publishing (IOPP). - 0957-4484 .- 1361-6528. ; 23:13
- Related links:
-
http://dx.doi.org/10...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://lup.lub.lu.s...
-
show less...
Abstract
Subject headings
Close
- We report on a comprehensive study of electrical and optical properties of efficient near-infrared p(+)-i-n(+) photodetectors based on large ensembles of self-assembled, vertically aligned i-n(+) InP nanowires monolithically grown on a common p(+) InP substrate without any buffer layer. The nanowires have a polytype modulated crystal structure of wurtzite and zinc blende. The electrical data display excellent rectifying behavior with an ideality factor of about 2.5 at 300 K. The ideality factor scales with 1/T, which possibly reflects deviations from classical transport models due to the mixed crystal phase of the nanowires. The observed dark leakage current is of the order of merely similar to 100 fA/nanowire at 1 V reverse bias. The detectors display a linear increase of the photocurrent with reverse bias up to about 10 pA/nanowire at 5 V. From spectrally resolved measurements, we conclude that the photocurrent is primarily generated by funneling photogenerated carriers from the substrate into the NWs. Contributions from direct excitation of the NWs become increasingly important at low temperatures. The photocurrent decreases with temperature with an activation energy of about 50 meV, which we discuss in terms of a temperature-dependent diffusion length in the substrate and perturbed transport through the mixed-phase nanowires. © 2012 IOP Publishing Ltd.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology -- Nano-technology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Pettersson, Håka ...
-
Zubritskaya, Iri ...
-
Nghia, Ngo Tuan
-
Wallentin, Jespe ...
-
Borgström, Magnu ...
-
Storm, Kristian
-
show more...
-
Landin, Lars, 19 ...
-
Wickert, Peter
-
Capasso, Federic ...
-
Samuelson, Lars
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Condensed Matter ...
-
- ENGINEERING AND TECHNOLOGY
-
ENGINEERING AND ...
-
and Nano technology
-
and Nano technology
- Articles in the publication
-
Nanotechnology
- By the university
-
Halmstad University
-
Lund University