id:"swepub:oai:DiVA.org:liu-109192"
Search: id:"swepub:oai:DiVA.org:liu-109192" > Turning ZnO into an...
- 1 of 1
- Previous record
- Next record
- To hitlist
Turning ZnO into an Efficient Energy Upconversion Material by Defect Engineering
-
- Stehr, Jan Eric (author)
- Linköpings universitet,Funktionella elektroniska material,Tekniska högskolan
-
- Chen, Shula (author)
- Linköpings universitet,Funktionella elektroniska material,Tekniska högskolan
-
- Koteeswara Reddy, Nandanapalli (author)
- Gwangju Institute Science and Technology, South Korea
- show more...
- show less...
- (creator_code:org_t)
- 2014-03-31
- 2014
- English.
- In: Advanced Functional Materials. - : Wiley-VCH Verlagsgesellschaft. - 1616-301X .- 1616-3028. ; 24:24, s. 3760-3764
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Photon upconversion materials are attractive for a wide range of applications from medicine, biology, to photonics. Among them, ZnO is of particular interest owing to its outstanding combination of materials and physical properties. Though energy upconversion has been demonstrated in ZnO, the exact physical mechanism is still unknown, preventing control of the processes. Here, defects formed in bulk and nanostructured ZnO synthesized using standard growth techniques play a key role in promoting efficient energy upconversion via two-step two-photon absorption (TS-TPA). From photoluminescence excitation of the anti-Stokes emissions, the threshold energy of the TS-TPA process is determined as being 2.10-2.14 eV in all studied ZnO materials irrespective of the employed growth techniques. This photo-electron paramagnetic resonance studies show that this threshold closely matches the ionization energy of the zinc vacancy (a common grown-in intrinsic defect in ZnO), thereby identifying the zinc vacancy as being the dominant defect responsible for the observed efficient energy upconversion. The upconversion is found to persist even at a low excitation density, making it attractive for photonic and photovoltaic applications.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- nonlinear optics; zinc oxide; zinc vacancy; photoluminescence; electron paramagnetic resonance
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Advanced Functional Materials (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Stehr, Jan Eric
- Chen, Shula
- Koteeswara Reddy ...
- Tu, Charles W.
- Chen, Weimin
- Buyanova, Irina
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Chemical Science ...
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- Articles in the publication
- Advanced Functio ...
- By the university
- Linköping University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
