Synthesis of ZnO tetrapods for flexible and transparent UV sensors

被引：45

作者：

Rackauskas, Simas ^{[1
]}

Mustonen, Kimmo ^{[1
]}

Jarvinen, Terhi ^{[1
]}

Mattila, Marco ^{[2
]}

Klimova, Olga ^{[3
]}

Jiang, Hua ^{[1
]}

Tolochko, Oleg ^{[3
]}

Lipsanen, Harri ^{[2
]}

Kauppinen, Esko I. ^{[1
]}

Nasibulin, Albert G. ^{[1
]}

机构：

[1] Aalto Univ, NanoMat Grp, Dept Appl Phys, Espoo 00076, Finland

[2] Aalto Univ, Dept Micro & Nanosci, Espoo 02150, Finland

[3] St Petersburg State Polytech Univ, Mat Sci Fac, St Petersburg 195251, Russia

来源：

NANOTECHNOLOGY | 2012年 / 23卷 / 09期

基金：

芬兰科学院;

关键词：

OPTICAL-PROPERTIES; NANOCRYSTALS; NANOSTRUCTURES; GROWTH; NANOWIRES; MECHANISM; NANOTETRAPODS; MORPHOLOGIES; KINETICS;

D O I：

10.1088/0957-4484/23/9/095502

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

ZnO tetrapods (ZnO-Ts) were synthesized in a vertical flow reactor by gas phase oxidation of Zn vapor in an air atmosphere. The morphology of the product was varied from nearly spherical nanoparticles to ZnO-Ts, together with the partial pressure of Zn and reaction temperature. MgO introduced during synthesis, increased the band gap, the optical transparency in the visible range, and also changed the ZnO-T structure. Fabricated flexible transparent UV sensors showed a 45-fold current increase under UV irradiation with an intensity of 30 mu W cm(-2) at a wavelength of 365 nm and response time of 0.9 s.

引用

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