ZnO Nanodisk Based UV Detectors with Printed Electrodes
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- 作者：Mohammad R. Alenezi ; Abdullah S. Alshammari ; Talal H. Alzanki ; Peter Jarowski ; Simon John Henley ; S. Ravi P. Silva
- 刊名：Langmuir
- 出版年：2014
- 出版时间：April 8, 2014
- 年：2014
- 卷：30
- 期：13
- 页码：3913-3921
- 全文大小：552K
- 年卷期：v.30,no.13(April 8, 2014)
- ISSN：1520-5827
文摘
The fabrication of highly functional materials for practical devices requires a deep understanding of the association between morphological and structural properties and applications. A controlled hydrothermal method to produce single crystal ZnO hexagonal nanodisks, nanorings, and nanoroses using a mixed solution of zinc sulfate (ZnSO4) and hexamethylenetetramine (HMTA) without the need of catalysts, substrates, or templates at low temperature (75 掳C) is introduced. Metal鈥搒emiconductor鈥搈etal (MSM) ultraviolet (UV) detectors were fabricated based on individual and multiple single-crystal zinc oxide (ZnO) hexagonal nanodisks. High quality single crystal individual nanodisk devices were fabricated with inkjet-printed silver electrodes. The detectors fabricated show record photoresponsivity (3300 A/W) and external quantum efficiency (1.2 脳 104), which we attribute to the absence of grain boundaries in the single crystal ZnO nanodisk and the polarity of its exposed surface.