Details

Autor(en) / Beteiligte

• Liau, Leo Chau-Kuang
• Lai, Chun-An

Titel

Fabrication of single crystal fiber-like ZnO/polyvinyl alcohol (PVA) films using the spray-drying approach

Ist Teil von

• Materials letters, 2021-02, Vol.285, p.129059, Article 129059

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2021

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• [Display omitted] •Single-crystal zinc oxide (sc-ZnO) was fabricated through spray-drying process.•Fiber-like strips of sc-ZnO/PVA films formed on glass at 70 °C.•Crystal growth of sc-ZnO in PVA was along the crystal orientation (101).•Mechanism of sc-ZnO formation on the ZnO/PVA interface was described. We report a rapid, facile, and cost-effective approach to fabricating single-crystal zinc oxide (sc-ZnO) with a fiber-like shape using a spray-drying process. A colloidal ZnO solution mixed with PVA (pH = 12) was prepared, and sprayed on glass substrates heated at 70 °C to prepare deposition films. The films formed fiber-like strips on the substrate after drying. The fiber-like ZnO films comprised bunches of needle-like objects, which were verified as sc-ZnO along the crystal orientation (101). This study discussed the critical factors for ZnO crystallization, such as PVA additives, and substrate temperature. The mechanism of sc-ZnO formation on the ZnO/PVA interface was described, based on the water evaporation (drying) conditions of the film.