Superlattice deformation in quantum dot films on flexible substrates via uniaxial strain

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Superlattice deformation in quantum dot films on flexible substrates via uniaxial strain

Heger, Julian E. (author): Tech Univ Munich, Chair Funct Mat, TUM Sch Nat Sci, Dept Phys, James Franck Str 1, D-85748 Garching, Germany.

Chen, Wei (author): Tech Univ Munich, Chair Funct Mat, TUM Sch Nat Sci, Dept Phys, James Franck Str 1, D-85748 Garching, Germany.;Shenzhen Technol Univ SZTU, Coll Engn Phys, Lantian Rd 3002, Shenzhen 518118, Peoples R China.

Zhong, Huaying (author): Tech Univ Munich, Chair Funct Mat, TUM Sch Nat Sci, Dept Phys, James Franck Str 1, D-85748 Garching, Germany.

Xiao, Tianxiao (author): Tech Univ Munich, Chair Funct Mat, TUM Sch Nat Sci, Dept Phys, James Franck Str 1, D-85748 Garching, Germany.

Harder, Constantin (author): Tech Univ Munich, Chair Funct Mat, TUM Sch Nat Sci, Dept Phys, James Franck Str 1, D-85748 Garching, Germany.;Deutsch Elektronen Synchrotron DESY, Notkestr 85, D-22607 Hamburg, Germany.

Apfelbeck, Fabian A. C. (author): Tech Univ Munich, Chair Funct Mat, TUM Sch Nat Sci, Dept Phys, James Franck Str 1, D-85748 Garching, Germany.

Weinzierl, Alexander F. (author): Tech Univ Munich, Chair Funct Mat, TUM Sch Nat Sci, Dept Phys, James Franck Str 1, D-85748 Garching, Germany.

Boldt, Regine (author): Leibniz Inst Polymerforsch Dresden eV, Inst Polymerwerkstoffe, Hohe Str 6, D-01069 Dresden, Germany.

Schraa, Lucas (author): Leibniz Inst Polymerforsch Dresden eV, Inst Polymerwerkstoffe, Hohe Str 6, D-01069 Dresden, Germany.

Euchler, Eric (author): Leibniz Inst Polymerforsch Dresden eV, Inst Polymerwerkstoffe, Hohe Str 6, D-01069 Dresden, Germany.

Sambale, Anna K. (author): Leibniz Inst Polymerforsch Dresden eV, Inst Polymerwerkstoffe, Hohe Str 6, D-01069 Dresden, Germany.

Schneider, Konrad (author): Leibniz Inst Polymerforsch Dresden eV, Inst Polymerwerkstoffe, Hohe Str 6, D-01069 Dresden, Germany.

Schwartzkopf, Matthias (author): Deutsch Elektronen Synchrotron DESY, Notkestr 85, D-22607 Hamburg, Germany.

Roth, Stephan V. (author): KTH,Ytbehandlingsteknik,Deutsch Elektronen Synchrotron DESY, Notkestr 85, D-22607 Hamburg, Germany.

Mueller-Buschbaum, P. (author): Tech Univ Munich, Chair Funct Mat, TUM Sch Nat Sci, Dept Phys, James Franck Str 1, D-85748 Garching, Germany.;Tech Univ Munich, Heinz Maier Leibnitz Zent MLZ, Lichtenbergstr 1, D-85748 Garching, Germany.

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Tech Univ Munich, Chair Funct Mat, TUM Sch Nat Sci, Dept Phys, James Franck Str 1, D-85748 Garching, Germany Tech Univ Munich, Chair Funct Mat, TUM Sch Nat Sci, Dept Phys, James Franck Str 1, D-85748 Garching, Germany.;Shenzhen Technol Univ SZTU, Coll Engn Phys, Lantian Rd 3002, Shenzhen 518118, Peoples R China. (creator_code:org_t)

2023
2023
English.
In: Nanoscale Horizons. - : Royal Society of Chemistry (RSC). - 2055-6764 .- 2055-6756. ; 8:3, s. 383-395

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

The superlattice in a quantum dot (QD) film on a flexible substrate deformed by uniaxial strain shows a phase transition in unit cell symmetry. With increasing uniaxial strain, the QD superlattice unit cell changes from tetragonal to cubic to tetragonal phase as measured with in situ grazing-incidence small-angle X-ray scattering (GISAXS). The respective changes in the optoelectronic coupling are probed with photoluminescence (PL) measurements. The PL emission intensity follows the phase transition due to the resulting changing inter-dot distances. The changes in PL intensity accompany a redshift in the emission spectrum, which agrees with the Forster resonance energy transfer (FRET) theory. The results are essential for a fundamental understanding of the impact of strain on the performance of flexible devices based on QD films, such as wearable electronics and next-generation solar cells on flexible substrates.

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By the author/editor: Heger, Julian E.; Chen, Wei; Zhong, Huaying; Xiao, Tianxiao; Harder, Constant ...; Apfelbeck, Fabia ...; show more...; Weinzierl, Alexa ...; Boldt, Regine; Schraa, Lucas; Euchler, Eric; Sambale, Anna K.; Schneider, Konra ...; Schwartzkopf, Ma ...; Roth, Stephan V.; Mueller-Buschbau ...; show less...

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NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Condensed Matter ...

Articles in the publication: Nanoscale Horizo ...

By the university: Royal Institute of Technology

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Superlattice deformation in quantum dot films on flexible substrates via uniaxial strain

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