SwePub
Sök i LIBRIS databas

  Utökad sökning

WFRF:(LINDBLAD B)
 

Sökning: WFRF:(LINDBLAD B) > (2020) > A method for studyi...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00006023naa a2200577 4500
001oai:DiVA.org:kth-289492
003SwePub
008210203s2020 | |||||||||||000 ||eng|
009oai:DiVA.org:uu-434199
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2894922 URI
0247 a https://doi.org/10.1038/s41598-020-79792-z2 DOI
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4341992 URI
040 a (SwePub)kthd (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Sloboda, Tamarau KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Div Appl Phys Chem, Dept Chem, S-10044 Stockholm, Sweden.4 aut0 (Swepub:kth)u18l9rqa
2451 0a A method for studying pico to microsecond time-resolved core-level spectroscopy used to investigate electron dynamics in quantum dots
264 c 2020-12-31
264 1b Springer Nature,c 2020
338 a print2 rdacarrier
500 a QC 20210203
520 a Time-resolved photoelectron spectroscopy can give insights into carrier dynamics and offers the possibility of element and site-specific information through the measurements of core levels. In this paper, we demonstrate that this method can access electrons dynamics in PbS quantum dots over a wide time window spanning from pico- to microseconds in a single experiment carried out at the synchrotron facility BESSY II. The method is sensitive to small changes in core level positions. Fast measurements at low pump fluences are enabled by the use of a pump laser at a lower repetition frequency than the repetition frequency of the X-ray pulses used to probe the core level electrons: Through the use of a time-resolved spectrometer, time-dependent analysis of data from all synchrotron pulses is possible. Furthermore, by picosecond control of the pump laser arrival at the sample relative to the X-ray pulses, a time-resolution limited only by the length of the X-ray pulses is achieved. Using this method, we studied the charge dynamics in thin film samples of PbS quantum dots on n-type MgZnO substrates through time-resolved measurements of the Pb 5d core level. We found a time-resolved core level shift, which we could assign to electron injection and charge accumulation at the MgZnO/PbS quantum dots interface. This assignment was confirmed through the measurement of PbS films with different thicknesses. Our results therefore give insight into the magnitude of the photovoltage generated specifically at the MgZnO/PbS interface and into the timescale of charge transport and electron injection, as well as into the timescale of charge recombination at this interface. It is a unique feature of our method that the timescale of both these processes can be accessed in a single experiment and investigated for a specific interface.
650 7a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
650 7a NATURVETENSKAPx Kemix Fysikalisk kemi0 (SwePub)104022 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Physical Chemistry0 (SwePub)104022 hsv//eng
650 7a NATURVETENSKAPx Fysikx Atom- och molekylfysik och optik0 (SwePub)103022 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Atom and Molecular Physics and Optics0 (SwePub)103022 hsv//eng
7001 a Svanström, Sebastianu Uppsala universitet,Molekyl- och kondenserade materiens fysik4 aut0 (Swepub:uu)sebsv792
7001 a Johansson, Fredriku Uppsala universitet,Molekyl- och kondenserade materiens fysik4 aut0 (Swepub:uu)frejo210
7001 a Andruszkiewicz, Anetau Uppsala universitet,Fysikalisk kemi4 aut0 (Swepub:uu)anean835
7001 a Zhang, Xiaoliangu Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.4 aut
7001 a Giangrisostomi, Erikau Helmholtz Zentrum Berlin GmbH, Inst Methods & Instrumentat Synchrotron Radiat Re, Albert Einstein Str 15, D-12489 Berlin, Germany.4 aut
7001 a Ovsyannikov, Ruslanu Helmholtz Zentrum Berlin GmbH, Inst Methods & Instrumentat Synchrotron Radiat Re, Albert Einstein Str 15, D-12489 Berlin, Germany.4 aut
7001 a Foehlisch, Alexanderu Helmholtz Zentrum Berlin GmbH, Inst Methods & Instrumentat Synchrotron Radiat Re, Albert Einstein Str 15, D-12489 Berlin, Germany.;Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24 25, D-14476 Potsdam, Germany.4 aut
7001 a Svensson, Svante,d 1947-u Uppsala universitet,Molekyl- och kondenserade materiens fysik,Uppsala Berlin Joint Lab Next Generat Photoelect, Albert Einstein Str 15, D-12489 Berlin, Germany.4 aut0 (Swepub:uu)svansven
7001 a Mårtensson, Nils,d 1949-u Uppsala universitet,Molekyl- och kondenserade materiens fysik,Uppsala Berlin Joint Lab Next Generat Photoelect, Albert Einstein Str 15, D-12489 Berlin, Germany.4 aut0 (Swepub:uu)nma32143
7001 a Johansson, Eriku Uppsala universitet,Fysikalisk kemi4 aut0 (Swepub:uu)erjoh367
7001 a Lindblad, Andreasu Uppsala universitet,Molekyl- och kondenserade materiens fysik4 aut0 (Swepub:uu)anlin087
7001 a Rensmo, Håkanu Uppsala universitet,Molekyl- och kondenserade materiens fysik4 aut0 (Swepub:uu)hakanrm
7001 a Cappel, Ute B.u KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Div Appl Phys Chem, Dept Chem, S-10044 Stockholm, Sweden.4 aut0 (Swepub:kth)u15ztiw5
7102 a KTHb Tillämpad fysikalisk kemi4 org
7730 t Scientific Reportsd : Springer Natureg 10:1q 10:1x 2045-2322
8564 u https://doi.org/10.1038/s41598-020-79792-zy Fulltext
8564 u https://www.nature.com/articles/s41598-020-79792-z.pdf
8564 u https://uu.diva-portal.org/smash/get/diva2:1526395/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-289492
8564 8u https://doi.org/10.1038/s41598-020-79792-z
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-434199

Hitta via bibliotek

Till lärosätets databas

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.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy