Inorganic-Organic p-n Heterojunction Nanotree Arrays for a High-Sensitivity Diode Humidity Sensor

被引：72
|
作者：
Wang, Ke [1 ]
Qian, Xuemin [1 ]
Zhang, Liang [1 ]
Li, Yongjun [1 ]
Liu, Huibiao [1 ]
机构：
[1] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, BNLMS, Beijing 100190, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2013年 / 5卷 / 12期
关键词：
inorganic-organic p-n heterojunction; 2D ordered aligned arrays; nanotrees; diode; humidity sensor; FIELD-EMISSION PROPERTIES; ZNO NANOTETRAPODS; NANOWIRE; NANOROD; NANOSTRUCTURES; FABRICATION; TCNQ; MICROPARTICLES; PORPHYRIN; GROWTH;
D O I：
10.1021/am4014677
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Large-area and ordered arrays (16 cm(2)) of an inorganic-organic p-n heterojunction nanotree (NT) were successfully fabricated. The nanotree arrays consist of ZnO nanorods (NRs) as backbones and CuTCNQ (TCNQ = 7,7,8,8-tetracyanoquinodimethane) NRs as branches. The sizes of CuTCNQ NRs can be tuned by the thickness of the Cu layer deposited on the surface of ZnO NR. The CuTCNQ/ZnO NT arrays displayed excellent diode nature and obvious size-dependent rectification ratios were observed. Moreover, the CuTCNQ/ZnO NT arrays were first applied for the fabrication of a diode-type humidity sensor, which displayed ultrahigh sensitivity and quick response/recovery properties at room temperature. The detection limitation of this new diode-type humidity sensor lowers to 5% relative humidity (RH).
引用
收藏
页码：5825 / 5831
页数：7
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