Doped ZnO in Hybrid Nanostructure for Lighting and Solar Cell Applications - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2019

Doped ZnO in Hybrid Nanostructure for Lighting and Solar Cell Applications

Résumé

Zinc oxide (ZnO) is a wide bandgap semiconductor possessing excellent optical properties due to different types of intrinsic defects, for instance, O vacancy (VO) and Zn interstitial (Zni). The visible photoluminescence (PL) of ZnO originating from deep-level defects makes it a promising candidate for applications such as white light emitting diodes (WLEDs) and down-shifting layer for solar cells. Although it is still a controversial issue attributing visible emissions to specific defects, the environmentally-friendly nature of ZnO keeps driving the research in ZnO, in view of its potential to replace rare-earth-based phosphors as WLEDs material. [1] In our previous study, a hybrid sphere structure of ZnO nanoparticles and polyacrylic acid (PAA) matrix synthesized through a hydrolysis method has proven a noble material emitting intensively in the visible range. [2] Herein, we present a general and in-depth study of the effect of dopants in ZnO hybrid structure. Various dopants are introduced into ZnO hybrid structure in order to optimize the PL of ZnO nanoparticles. Effects of dopant nature, size and valence are investigated at different doping concentrations. The emission colour of doped ZnO nanoparticles can be tuned in visible range between yellow and green and the photoluminescent quantum yield (PL QY) can be improved by specific doping. The present work facilitates the synthesis and control of doped ZnO nanocrystals emitting from cold to warm white light. References [1] A. Janotti and C.G. Van de Walle. Phys. Rev. B 76, 165202 (2007). [2] Y. Zhu, A. Apostoluk, P. Gautier, A. Valette, L. Omar, T. Cornier, J. M. Bluet, K. Masenelli-Varlot, S. Daniele, and B. Masenelli. Scientific Reports 6, 23557 (2016).
Fichier non déposé

Dates et versions

hal-02417654 , version 1 (18-12-2019)

Identifiants

  • HAL Id : hal-02417654 , version 1

Citer

Yu Zhang, A. Apostoluk, Bruno Masenelli, Stéphane Daniele, Nicolas Le Bail, et al.. Doped ZnO in Hybrid Nanostructure for Lighting and Solar Cell Applications. Materials Oceania 2019 - International Conference on Materials Science and Engineering, Sep 2019, Melbourne, Australia. ⟨hal-02417654⟩
56 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More