Journal Article

PUBDB-2024-05900

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Tailoring p-Type Behavior in ZnO Quantum Dots through Enhanced Sol–Gel Synthesis: Mechanistic Insights into Zinc Vacancies

Kahraman, A. ; Socie, E. ; Nazari, M. ; Kazazis, D. ; Buldu-Akturk, M. ; Kabanova, V. ; Biasin, E. ; Smolentsev, G. ; Grolimund, D. ; Erdem, E. ; Moser, J. E. ; Cannizzo, A. ; Bacellar Cases da Silveira, C. (Corresponding author)Extern*XFEL.EU* ; Milne, C. (Corresponding author)XFEL.EU*

2024
ACS Washington, DC

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Please use a persistent id in citations: doi:10.1021/acs.jpclett.3c03519  doi:10.3204/PUBDB-2024-05900

Abstract: The synthesis and control of properties of p-type ZnO iscrucial for a variety of optoelectronic and spintronic applications;however, it remains challenging due to the control of intrinsic midgap(defect) states. In this study, we demonstrate a synthetic route to yieldcolloidal ZnO quantum dots (QD) via an enhanced sol−gel processthat effectively eliminates the residual intermediate reaction molecules,which would otherwise weaken the excitonic emission. This processsupports the creation of ZnO with p-type properties or compensationof inherited n-type defects, primarily due to zinc vacancies underoxygen-rich conditions. The in-depth analysis of carrier recombinationin the midgap across several time scales reveals microsecond carrierlifetimes at room temperature which are expected to occur via zinc vacancy defects, supporting the promoted p-type character of thesynthesized ZnO QDs.

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Contributing Institute(s):

1. FXE (XFEL_E1_FXE)

Research Program(s):

1. 6G13 - Accelerator of European XFEL (POF4-6G13) (POF4-6G13)

Experiment(s):

1. Experiments at XFEL

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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