PHONON REPLICA OF FREE EXCITONS IN ZnO EPITAXIAL FILMS

Zhang, B. P.; Manh, L. H.; Isoya, G.; Wakatsuki, K.; Usami, Noritaka; Segawa, Y.

doi:10.1080/1058726021000045531

Cited by 4 publications

(1 citation statement)

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“…Additionally, the appearance of FX and DBX as well as their phonon replicas in the measured PL spectra in Fig. 5(c) provides strong evidence that the ZnO NRs have a high crystalline quality [59]. The CL and PL studies also found no evidence of contamination or the presence of extended structural defects in the ZnO NRs.…”

Section: Optical Properties Of Hydrothermally Grown Zno Nrs and Uv Em...mentioning

confidence: 59%

Defect-free ZnO nanorods with high angular distribution for enhanced excitonic emission

Fiedler

Phillips

2023

Journal of Materials Research

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Low-temperature hydrothermal growth has emerged as a popular method for the fabrication of ZnO nanorods (NRs), increasing the functionality and utility of ZnO-based devices. In this work, we study the influence of growth time, temperature and seed layer on the dimensions and angular distribution of ZnO NRs. High-quality NRs with a crisscrossed 60° angular distribution have been grown with a 20–60 nm diameter and 600 nm length. We show that, within the ideal range of growth parameters, the growth time and temperature have no controllable influence on NR diameter and length, while the deposition method and size of the pre-growth deposited ZnO seeds affects diameter and NR angular alignment. We demonstrate advantages of using crisscross-aligned NRs over planar ZnO for the enhancement of ZnO excitonic emission by optical coupling with gold nanoparticles. These results can be readily adapted for applications that involve surface coating-mediated enhancement of both light emission and injection. Graphical abstract

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Section: Optical Properties Of Hydrothermally Grown Zno Nrs and Uv Em...mentioning

confidence: 59%