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  • Meng, JieTechnical University of Denmark (author)

Modulating Charge-Carrier Dynamics in Mn-Doped All-Inorganic Halide Perovskite Quantum Dots through the Doping-Induced Deep Trap States

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • 2020-04-24
  • American Chemical Society (ACS),2020
  • 7 s.

Numbers

  • LIBRIS-ID:oai:lup.lub.lu.se:cdbc6a5d-afd4-4a26-90b6-8abc51686471
  • https://lup.lub.lu.se/record/cdbc6a5d-afd4-4a26-90b6-8abc51686471URI
  • https://doi.org/10.1021/acs.jpclett.0c01050DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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Classification

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

Notes

  • Transition-metal ion doping has been demonstrated to be effective for tuning the photoluminescence properties of perovskite quantum dots (QDs). However, it would inevitably introduce defects in the lattice. As the Mn concentration increases, the Mn dopant photoluminescence quantum yield (PLQY) first increases and then decreases. Herein the influence of the dopant and the defect states on the photophysics in Mn-doped CsPbCl3 QDs was studied by time-resolved spectroscopies, whereas the energy levels of the possible defect states were analyzed by density functional theory calculations. We reveal the formation of deep interstitials defects (Cli) by Mn2+ doping. The depopulation of initial QD exciton states is a competition between exciton-dopant energy transfer and defect trapping on an early time scale (<100 ps), which determines the final PLQY of the QDs. The present work establishes a robust material optimization guideline for all of the emerging applications where a high PLQY is essential.

Subject headings and genre

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

  • Lan, ZhenyunTechnical University of Denmark (author)
  • 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(Swepub:lu)mo5485ab (author)
  • Yang, BinDalian Institute of Chemical Physics Chinese Academy of Sciences (author)
  • Mossin, SusanneTechnical University of Denmark (author)
  • Liang, MingliTechnical University of Denmark (author)
  • Naumova, MariaGerman Electron Synchrotron (DESY) (author)
  • Shi, QiLund 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)qi2463sh (author)
  • Gutierrez Alvarez, Sol LauraTechnical University of Denmark (author)
  • Liu, YangLund University,Southwest Petroleum University (author)
  • Lin, WeihuaLund 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)li0306we (author)
  • Castelli, Ivano E.Technical University of Denmark (author)
  • Canton, Sophie E.German Electron Synchrotron (DESY),ELI-HU Non-profit Ltd(Swepub:lu)chem-sca (author)
  • Pullerits, TönuLund 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)
  • 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,Technical University of Denmark(Swepub:lu)chem-kbz (author)
  • Technical University of DenmarkNanoLund: Centre for Nanoscience (creator_code:org_t)

Related titles

  • In:The Journal of Physical Chemistry Letters: American Chemical Society (ACS)11:9, s. 3705-37111948-7185

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