Abstract
We report on the electrosynthesis of nanostructured zinc oxide (ZnO) thin films using organic molecule templates self-assembled on indium-doped tin oxide substrates in an aqueous medium. The organic molecule templates alter the morphology and microscopic defect configuration of the ZnO film having a hexagonal wurtzite structure. Low-temperature photoluminescence (PL) study reveals that the ZnO films exhibit ultraviolet (3.36 eV and 3.22 eV), violet (3.06 eV), blue (2.88 eV), and green (2.50 eV) emissions that originate from transitions related to deep-level (zinc interstitials and vacancies) and acceptor-like (ionized zinc vacancies) defect states. A defect energy level diagram based on the PL measurement is proposed.
Original language | English |
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Pages (from-to) | 269-273 |
Number of pages | 5 |
Journal | Thin Solid Films |
Volume | 562 |
DOIs | |
State | Published - 1 Jul 2014 |
Bibliographical note
Funding Information:This project was supported by the National Research Foundation (NRF) of Korea (Grant Nos. 2013-044975 and 2012-008517 ).
Keywords
- Electrodeposition
- Nanostructured zinc oxide
- Photoluminescence