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  • Abdellah, MohamedLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,South Valley University (author)

Drastic difference between hole and electron injection through the gradient shell of CdxSeyZn1−xS1−y quantum dots

  • Article/chapterEnglish2017

Publisher, publication year, extent ...

  • 2017
  • Royal Society of Chemistry (RSC),2017
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-335189
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-335189URI
  • https://doi.org/10.1039/c7nr04495jDOI
  • https://lup.lub.lu.se/record/135ce7aa-7756-40db-95aa-0c16c3d4a944URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Title in WoS: Drastic difference between hole and electron injection through the gradient shell of CdxSeyZn1-xS1-y quantum dots
  • Ultrafast fluorescence spectroscopy was used to investigate the hole injection in CdxSeyZn1-xS1-y gradient core-shell quantum dot (CSQD) sensitized p-type NiO photocathodes. A series of CSQDs with a wide range of shell thicknesses was studied. Complementary photoelectrochemical cell measurements were carried out to confirm that the hole injection from the active core through the gradient shell to NiO takes place. The hole injection from the valence band of the QDs to NiO depends much less on the shell thickness when compared to the corresponding electron injection to n-type semiconductor (ZnO). We simulate the charge carrier tunneling through the potential barrier due to the gradient shell by numerically solving the Schrodinger equation. The details of the band alignment determining the potential barrier are obtained from X-ray spectroscopy measurements. The observed drastic differences between the hole and electron injection are consistent with a model where the hole effective mass decreases, while the gradient shell thickness increases.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Poulsen, FelipeUniv Copenhagen, Dept Chem, DK-2100 Copenhagen, Denmark.,University of Copenhagen (author)
  • Zhu, QiushiLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)maxl-qzu (author)
  • Zhu, NanTech Univ Denmark, Dept Chem, Kemitorvet Bldg 207, DK-2800 Lyngby, Denmark.;Dalian Univ Technol, Zhang Dayu Sch Chem, Dalian 116024, Peoples R China.,Technical University of Denmark,Dalian University of Technology (author)
  • Žídek, KarelAcad Sci Czech Republ, Inst Plasma Phys, Reg Ctr Special Opt & Optoelect Syst TOPTEC, Za Slovankou 1782-3, Prague 18200 8, Czech Republic.,Institute of Plasma Physics, Academy of Sciences of the Czech Republic(Swepub:lu)chem-kzd (author)
  • Chábera, PavelLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)chem-pcr (author)
  • Corti, AnnamariaUppsala University,Uppsala universitet,Fysikalisk kemi (author)
  • Hansen, ThorstenUniv Copenhagen, Dept Chem, DK-2100 Copenhagen, Denmark.,University of Copenhagen(Swepub:lu)chem-teh (author)
  • Chi, QijinTech Univ Denmark, Dept Chem, Kemitorvet Bldg 207, DK-2800 Lyngby, Denmark.,Technical University of Denmark (author)
  • Canton, Sophie E.DESY, Attosecond Sci Grp, Notkestr 85, D-22607 Hamburg, Germany.;ELI HU Nonprofit Ltd, ELI ALPS, Dugonics Ter 13, H-6720 Szeged, Hungary.,German Electron Synchrotron (DESY),ELI Attosecond Light Pulse Source (ELI-ALPS)(Swepub:lu)chem-sca (author)
  • Zheng, KaiboLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Qatar University(Swepub:lu)chem-kbz (author)
  • Pullerits, TõnuLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)chph-tp (author)
  • NanoLund: Centre for NanoscienceAnnan verksamhet, LTH (creator_code:org_t)

Related titles

  • In:Nanoscale: Royal Society of Chemistry (RSC)9:34, s. 12503-125082040-33642040-3372

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