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WFRF:(Christianen Peter C. M.)
 

Sökning: WFRF:(Christianen Peter C. M.) > Fine Structure and ...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00004857naa a2200529 4500
001oai:DiVA.org:liu-161177
003SwePub
008191025s2019 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1611772 URI
0247 a https://doi.org/10.1021/acsnano.9b032522 DOI
040 a (SwePub)liu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Pandya, Raju Univ Cambridge, England4 aut
2451 0a Fine Structure and Spin Dynamics of Linearly Polarized Indirect Excitons in Two-Dimensional CdSe/CdTe Colloidal Heterostructures
264 c 2019-09-06
264 1b AMER CHEMICAL SOC,c 2019
338 a print2 rdacarrier
500 a Funding Agencies|EPSRC (UK)Engineering & Physical Sciences Research Council (EPSRC) [EP/N01085X/1]; Winton Program for the Physics of Sustainability; Swedish Research CouncilSwedish Research Council [2017-05285, 2016-05091]; Australian Research CouncilAustralian Research Council [CE170100026]; HFML-RU/NOW-I [EP/N01085X/1]
520 a Heterostructured two-dimensional colloidal nanoplatelets are a class of material that has attracted great interest for optoelectronic applications due to their high photoluminescence yield, atomically tunable thickness, and ultralow lasing thresholds. Of particular interest are laterally heterostructured core-crown nanoplatelets with a type-II band alignment, where the in-plane spatial separation of carriers leads to indirect (or charge transfer) excitons with long lifetimes and bright, highly Stokes shifted emission. Despite this, little is known about the nature of the lowest energy exciton states responsible for emission in these materials. Here, using polarization-controlled, steady-state, and time-resolved photoluminescence measurements, at temperatures down to 1.6 K and magnetic fields up to 30 T, we study the exciton fine structure and spin dynamics of archetypal type-II CdSe/CdTe core-crown nanoplatelets. Complemented by theoretical modeling and zero-field quantum beat measurements, we find the bright-exciton fine structure consists of two linearly polarized states with a fine structure splitting similar to 50 mu eV and an indirect exciton Lande g-factor of 0.7. In addition, we show the exciton spin lifetime to be in the microsecond range with an unusual B-3 magnetic field dependence. The discovery of linearly polarized exciton states and emission highlights the potential for use of such materials in display and imaging applications without polarization filters. Furthermore, the small exciton fine structure splitting and a long spin lifetime are fundamental advantages when envisaging CdSe/CdTe nanoplatelets as elementary bricks for the next generation of quantum devices, particularly given their ease of fabrication.
650 7a NATURVETENSKAPx Fysikx Den kondenserade materiens fysik0 (SwePub)103042 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Condensed Matter Physics0 (SwePub)103042 hsv//eng
653 a CdSe/CdTe colloidal nanoplatelets; indirect excitons; high magnetic fields; core-crown heterostructure; spin dynamics; exciton fine structure; exchange interaction
7001 a Steinmetz, Violetteu Sorbonne Univ, France4 aut
7001 a Puttisong, Yuttapoomu Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten4 aut0 (Swepub:liu)yutpu33
7001 a Dufour, Marionu PSL Res Univ, France4 aut
7001 a Chen, Weiminu Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten4 aut0 (Swepub:liu)weich55
7001 a Chen, Richard Y. S.u Univ Cambridge, England4 aut
7001 a Barisien, Thierryu Sorbonne Univ, France4 aut
7001 a Sharma, Ashishu Univ Sydney, Australia4 aut
7001 a Lakhwani, Girishu Univ Sydney, Australia4 aut
7001 a Mitioglu, Anatolieu Radboud Univ Nijmegen, Netherlands4 aut
7001 a Christianen, Peter C. M.u Radboud Univ Nijmegen, Netherlands4 aut
7001 a Legrand, Laurentu Sorbonne Univ, France4 aut
7001 a Bernardot, Fredericku Sorbonne Univ, France4 aut
7001 a Testelin, Christopheu Sorbonne Univ, France4 aut
7001 a Chin, Alex W.u Sorbonne Univ, France4 aut
7001 a Ithurria, Sandrineu PSL Res Univ, France4 aut
7001 a Chamarro, Mariau Sorbonne Univ, France4 aut
7001 a Rao, Akshayu Univ Cambridge, England4 aut
7102 a Univ Cambridge, Englandb Sorbonne Univ, France4 org
7730 t ACS Nanod : AMER CHEMICAL SOCg 13:9, s. 10140-10153q 13:9<10140-10153x 1936-0851x 1936-086X
8564 u https://repository.ubn.ru.nl/bitstream/2066/208634/1/208634.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-161177
8564 8u https://doi.org/10.1021/acsnano.9b03252

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